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<meta name="keywords" content="1 alpha-hydroxylase deficiency, 1-alpha, 25-hydroxyvitamin d3 deficiency, selective, 1-alpha-hydroxylase deficiency, 25-hydroxycholecalciferol-1-hydroxylase deficiency, C0268689, calcidiol 1-monooxygenase defect, disease or syndrome, hypocalcemic vitamin d-dependent rickets, pddr - pseudovitamin d deficiency rickets, pddr ia, pddr1a, pddri, pseudo vitamin-d deficient rickets, pseudo-vitamin-d-deficient rickets, pseudodeficiency rickets, pseudovitamin d deficiency rickets, pseudovitamin d-deficiency rickets, type ia, pseudovitamin d-deficient rickets, pseudovitamin d-resistant rickets, selective 1-alpha, 25-hydroxyvitamin d3 deficiency, vdd1, vddi, vddr i - vitamin d-dependent rickets type i, vddr-i, vddr1, vddr1a, vitamin d 1 alpha-hydroxylase deficiency, vitamin d dependency, type 1, vitamin d dependent rickets type i, vitamin d hydroxylation-deficient rickets, type 1a, vitamin d-dependency type i, vitamin d-dependent rickets type 1, vitamin d-dependent rickets type i, vitamin d-dependent rickets, type 1, vitamin d-dependent rickets, type 1a, vitamin d-dependent rickets, type i, autosomal dominant, autosomal recessive, birth defects, chromosomal disease, chromosome, clinical features, clinical findings, clinical genetics, clinical recommendations, clinvar, congenital chromosomal disease, consumer genetic resources, cytogenetic location, disease characteristics, disease definitions, disease descriptions, disease ontology, disease synonyms, disease vocabulary, dysmorphology, entrez, familial disease, gene, gene-disease relationship, genereviews, genetic disease, genetic disorder, genetic terminology, genetic testing registry, genetics home reference, genomic disease, gtr, hereditary disease, heritable disease, hpo, human phenotype ontology, inherited disease, management guidelines, maternal inheritance, medgen, medical genetics, medical subject headings, mesh, mitochondrial inheritance, mode of inheritance, national center for biotechnology information, national institutes of health, national library of medicine, ncbi, nih, nlm, omim, ordo, orphanet, paternal inheritance, phenome, position statements, professional practice guidelines, rare disease, reference sequence, refseq, snomed ct, syndrome, undiagnosed diseases, x-linked recessive" /><meta name="description" content="Vitamin D-dependent rickets is a disorder of bone development that leads to softening and weakening of the bones (rickets). There are several forms of the condition that are distinguished primarily by their genetic causes: type 1A (VDDR1A), type 1B (VDDR1B), and type 2A (VDDR2A). There is also evidence of a very rare form of the condition, called type 2B (VDDR2B), although not much is known about this form.\n\nThe signs and symptoms of vitamin D-dependent rickets begin within months after birth, and most are the same for all types of the condition. The weak bones often cause bone pain and delayed growth and have a tendency to fracture. When affected children begin to walk, they may develop abnormally curved (bowed) legs because the bones are too weak to bear weight. Impaired bone development also results in widening of the areas near the ends of bones where new bone forms (metaphyses), especially in the knees, wrists, and ribs. Some people with vitamin D-dependent rickets have dental abnormalities such as thin tooth enamel and frequent cavities. Poor muscle tone (hypotonia) and muscle weakness are also common in this condition, and some affected individuals develop seizures.\n\nIn vitamin D-dependent rickets, there is an imbalance of certain substances in the blood. An early sign in all types of the condition is low levels of the mineral calcium (hypocalcemia), which is essential for the normal formation of bones and teeth. Affected individuals also develop high levels of a hormone involved in regulating calcium levels called parathyroid hormone (PTH), which leads to a condition called secondary hyperparathyroidism. Low levels of a mineral called phosphate (hypophosphatemia) also occur in affected individuals. Vitamin D-dependent rickets types 1 and 2 can be grouped by blood levels of a hormone called calcitriol, which is the active form of vitamin D; individuals with VDDR1A and VDDR1B have abnormally low levels of calcitriol and individuals with VDDR2A and VDDR2B have abnormally high levels.\n\nHair loss (alopecia) can occur in VDDR2A, although not everyone with this form of the condition has alopecia. Affected individuals can have sparse or patchy hair or no hair at all on their heads. Some affected individuals are missing body hair as well." /><meta name="robots" content="index,nofollow,noarchive" />
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<title>Vitamin D-dependent rickets, type 1 (Concept Id: C0268689)
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<!--
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<!--imgCountBooks = 0--><h1 class="medgenTitle"><div class="MedGenTitleText">Vitamin D-dependent rickets, type 1<span class="h1sub">(VDD1)</span></div></h1><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>124344</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information."><span class="highlight" style="background-color:">C0268689</span></a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div><table class="medgenTable"><tbody><tr><td>Synonyms:</td>
<td>VDD1; VITAMIN D DEPENDENCY, TYPE 1; Vitamin D-Dependent Rickets, Type I</td></tr>
<tr><td><span class="bold">SNOMED CT: </span></td>
<td>Vitamin D-dependent rickets, type 1 (67049004); Calcidiol 1-monooxygenase defect (67049004); Pseudo-vitamin-D-deficient rickets (67049004); 1-alpha-hydroxylase deficiency (67049004); Pseudodeficiency rickets (67049004); Pseudovitamin D-resistant rickets (67049004); PDDR - Pseudovitamin D deficiency rickets (67049004); 25-Hydroxycholecalciferol-1-hydroxylase deficiency (67049004); Vitamin D-dependent rickets type I (67049004); VDDR I - Vitamin D-dependent rickets type I (67049004); Pseudovitamin D deficiency rickets (67049004)</td></tr>
<tr><td>Modes of inheritance:</td>
<td>
<div class="divPopper rprt" id="moi_141025"><div><strong>Autosomal recessive inheritance</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>141025</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0441748</a></dd><dt><span class="dotprefix"></span></dt><dd>Intellectual Product</dd></dl></div></div></div>
<div class="spaceAbove">Source: Orphanet</div>
<div class="spaceAbove">A mode of inheritance that is observed for traits related to a gene encoded on one of the autosomes (i.e., the human chromosomes 1-22) in which a trait manifests in individuals with two pathogenic alleles, either homozygotes (two copies of the same mutant allele) or compound heterozygotes (whereby each copy of a gene has a distinct mutant allele).</div></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#moi_141025" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Autosomal recessive inheritance</a><span> (Orphanet)</span></div></td></tr>
<tr><td colspan="2" class="small"> </td></tr><tr><td>Monarch Initiative:</td>
<td><a href="https://monarchinitiative.org/disease/MONDO:0009924" target="_blank">MONDO:0009924</a></td></tr>
<tr><td>OMIM<span class="superscript">®</span>:</td>
<td><a href="https://omim.org/entry/264700" target="_blank">264700</a>; <a href="https://omim.org/entry/609506" target="_blank">609506</a></td></tr>
<tr><td>Orphanet:</td>
<td><a target="_blank" title="Orphanet: The portal for rare diseases and orphan drugs" href="http://www.orpha.net/consor/cgi-bin/OC_Exp.php?lng=EN&amp;Expert=289157">ORPHA289157</a></td></tr></tbody></table></div><div class="rprt-body jig-ncbiinpagenav" data-jigconfig="smoothScroll: false, gotoTopLink: true, gotoTopLinkText: '', gotoTopLinkAttrs: {'title': 'Go to the top of the page'},allHeadingLevels: ['h1'], topOfPageTOC: true, tocId: 'my-toc'"><div id="rprt-tabs-1" class="rprt-tab"><div id="tb-termsProp-1"><div class="leftCol mgCol"><div>
<div class="portlet mgSection" id="ID_100">
<div class="portlet_head mgSectionHead ui-widget-header"><h1 class="nl" id="Definition">Definition</h1><a sid="100" href="#" class="portlet_shutter" title="Show/hide content"></a></div>
<div class="portlet_content ln">Vitamin D-dependent rickets is a disorder of bone development that leads to softening and weakening of the bones (rickets). There are several forms of the condition that are distinguished primarily by their genetic causes: type 1A (VDDR1A), type 1B (VDDR1B), and type 2A (VDDR2A). There is also evidence of a very rare form of the condition, called type 2B (VDDR2B), although not much is known about this form.<br /><br />The signs and symptoms of vitamin D-dependent rickets begin within months after birth, and most are the same for all types of the condition. The weak bones often cause bone pain and delayed growth and have a tendency to fracture. When affected children begin to walk, they may develop abnormally curved (bowed) legs because the bones are too weak to bear weight. Impaired bone development also results in widening of the areas near the ends of bones where new bone forms (metaphyses), especially in the knees, wrists, and ribs. Some people with vitamin D-dependent rickets have dental abnormalities such as thin tooth enamel and frequent cavities. Poor muscle tone (hypotonia) and muscle weakness are also common in this condition, and some affected individuals develop seizures.<br /><br />In vitamin D-dependent rickets, there is an imbalance of certain substances in the blood. An early sign in all types of the condition is low levels of the mineral calcium (hypocalcemia), which is essential for the normal formation of bones and teeth. Affected individuals also develop high levels of a hormone involved in regulating calcium levels called parathyroid hormone (PTH), which leads to a condition called secondary hyperparathyroidism. Low levels of a mineral called phosphate (hypophosphatemia) also occur in affected individuals. Vitamin D-dependent rickets types 1 and 2 can be grouped by blood levels of a hormone called calcitriol, which is the active form of vitamin D; individuals with VDDR1A and VDDR1B have abnormally low levels of calcitriol and individuals with VDDR2A and VDDR2B have abnormally high levels.<br /><br />Hair loss (alopecia) can occur in VDDR2A, although not everyone with this form of the condition has alopecia. Affected individuals can have sparse or patchy hair or no hair at all on their heads. Some affected individuals are missing body hair as well. [from <a title="MedlinePlus Genetics" href="https://medlineplus.gov/genetics/" class="defSource" target="_blank">MedlinePlus Genetics</a>]</div>
</div>
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<div class="portlet_head mgSectionHead ui-widget-header"><h1 class="nl" id="Clinical_features">Clinical features</h1><a sid="102" href="#" class="portlet_shutter" title="Show/hide content"></a></div>
<div class="portlet_content ln clinfeat"><strong>From HPO</strong><br />
<div class="divPopper rprt" id="clin_57489"><div><strong>Bone pain</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>57489</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0151825</a></dd><dt><span class="dotprefix"></span></dt><dd>Sign or Symptom</dd></dl></div></div></div>
<div class="spaceAbove">An unpleasant sensation characterized by physical discomfort (such as pricking, throbbing, or aching) localized to bone.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/57489">Feature record</a> | <a href="/medgen?term=%22Bone%20pain%22%5BClinical%20Features%5D%20OR%2057489%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_9381"><div><strong>Hypocalciuria</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>9381</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0020599</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">An abnormally decreased calcium concentration in the urine.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/9381">Feature record</a> | <a href="/medgen?term=%22Hypocalciuria%22%5BClinical%20Features%5D%20OR%209381%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_56402"><div><strong>Ketonuria</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>56402</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0162275</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">High levels of ketone bodies (acetoacetic acid, beta-hydroxybutyric acid, and acetone) in the urine. Ketone bodies are insignificant in the blood and urine of normal individuals in the postprandial or overnight-fasted state.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/56402">Feature record</a> | <a href="/medgen?term=%22Ketonuria%22%5BClinical%20Features%5D%20OR%2056402%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_335116"><div><strong>Renal phosphate wasting</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>335116</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1845169</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">High urine phosphate in the presence of hypophosphatemia.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/335116">Feature record</a> | <a href="/medgen?term=%22Renal%20phosphate%20wasting%22%5BClinical%20Features%5D%20OR%20335116%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_339863"><div><strong>Generalized aminoaciduria</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>339863</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1847868</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">An increased concentration of all types of amino acid in the urine.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/339863">Feature record</a> | <a href="/medgen?term=%22Generalized%20aminoaciduria%22%5BClinical%20Features%5D%20OR%20339863%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_332360"><div><strong>Tibial bowing</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>332360</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1837081</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">A bending or abnormal curvature of the tibia.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/332360">Feature record</a> | <a href="/medgen?term=%22Tibial%20bowing%22%5BClinical%20Features%5D%20OR%20332360%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_325479"><div><strong>Enlargement of the wrists</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>325479</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1838663</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/325479">Feature record</a> | <a href="/medgen?term=%22Enlargement%20of%20the%20wrists%22%5BClinical%20Features%5D%20OR%20325479%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_333151"><div><strong>Enlargement of the ankles</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>333151</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1838664</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/333151">Feature record</a> | <a href="/medgen?term=%22Enlargement%20of%20the%20ankles%22%5BClinical%20Features%5D%20OR%20333151%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_869374"><div><strong>Fibular bowing</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>869374</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4023801</a></dd><dt><span class="dotprefix"></span></dt><dd>Anatomical Abnormality</dd></dl></div></div></div>
<div class="spaceAbove">A bending or abnormal curvature of the fibula.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/869374">Feature record</a> | <a href="/medgen?term=%22Fibular%20bowing%22%5BClinical%20Features%5D%20OR%20869374%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_1380263"><div><strong>Subperiosteal bone resorption</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1380263</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4476534</a></dd><dt><span class="dotprefix"></span></dt><dd>Anatomical Abnormality</dd></dl></div></div></div>
<div class="spaceAbove">Loss of bone mass occurring beneath the periosteum (the periosteum is the connective-tissue membrane that surrounds all bones except at the articular surfaces). This process may create a serrated and lace-like appearance in periosteal cortical bone.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1380263">Feature record</a> | <a href="/medgen?term=%22Subperiosteal%20bone%20resorption%22%5BClinical%20Features%5D%20OR%201380263%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_99124"><div><strong>Growth delay</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>99124</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0456070</a></dd><dt><span class="dotprefix"></span></dt><dd>Pathologic Function</dd></dl></div></div></div>
<div class="spaceAbove">A deficiency or slowing down of growth pre- and postnatally.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/99124">Feature record</a> | <a href="/medgen?term=%22Growth%20delay%22%5BClinical%20Features%5D%20OR%2099124%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_395343"><div><strong>Postnatal growth retardation</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>395343</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1859778</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">Slow or limited growth after birth.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/395343">Feature record</a> | <a href="/medgen?term=%22Postnatal%20growth%20retardation%22%5BClinical%20Features%5D%20OR%20395343%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_746019"><div><strong>Failure to thrive</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>746019</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2315100</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Failure to thrive (FTT) refers to a child whose physical growth is substantially below the norm.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/746019">Feature record</a> | <a href="/medgen?term=%22Failure%20to%20thrive%22%5BClinical%20Features%5D%20OR%20746019%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_340750"><div><strong>Protuberant abdomen</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>340750</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1854928</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">A thrusting or bulging out of the abdomen.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/340750">Feature record</a> | <a href="/medgen?term=%22Protuberant%20abdomen%22%5BClinical%20Features%5D%20OR%20340750%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_107895"><div><strong>Gait disturbance</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>107895</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0575081</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">The term gait disturbance can refer to any disruption of the ability to walk.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/107895">Feature record</a> | <a href="/medgen?term=%22Gait%20disturbance%22%5BClinical%20Features%5D%20OR%20107895%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_381392"><div><strong>Motor delay</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>381392</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1854301</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">A type of Developmental delay characterized by a delay in acquiring motor skills.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/381392">Feature record</a> | <a href="/medgen?term=%22Motor%20delay%22%5BClinical%20Features%5D%20OR%20381392%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_340985"><div><strong>Hypocalcemic seizures</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>340985</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1855841</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/340985">Feature record</a> | <a href="/medgen?term=%22Hypocalcemic%20seizures%22%5BClinical%20Features%5D%20OR%20340985%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_397841"><div><strong>Irritability</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>397841</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2700617</a></dd><dt><span class="dotprefix"></span></dt><dd>Mental Process</dd></dl></div></div></div>
<div class="spaceAbove">A proneness to anger, i.e., a tendency to become easily bothered or annoyed.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen?term=%22Irritability%22%5BClinical%20Features%5D%20OR%20397841%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_42094"><div><strong>Recurrent fractures</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>42094</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0016655</a></dd><dt><span class="dotprefix"></span></dt><dd>Injury or Poisoning</dd></dl></div></div></div>
<div class="spaceAbove">The repeated occurrence of bone fractures (implying an abnormally increased tendency for fracture).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen?term=%22Recurrent%20fractures%22%5BClinical%20Features%5D%20OR%2042094%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_10133"><div><strong>Hypotonia</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>10133</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0026827</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">Hypotonia is an abnormally low muscle tone (the amount of tension or resistance to movement in a muscle). Even when relaxed, muscles have a continuous and passive partial contraction which provides some resistance to passive stretching. Hypotonia thus manifests as diminished resistance to passive stretching. Hypotonia is not the same as muscle weakness, although the two conditions can co-exist.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/10133">Feature record</a> | <a href="/medgen?term=%22Hypotonia%22%5BClinical%20Features%5D%20OR%2010133%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_48470"><div><strong>Rickets</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>48470</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0035579</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Rickets is divided into two major categories including calcipenic and phosphopenic. Hypophosphatemia is described as a common manifestation of both categories. Hypophosphatemic rickets is the most common type of rickets that is characterized by low levels of serum phosphate, resistance to ultraviolet radiation or vitamin D intake. There are several issues involved in hypophosphatemic rickets such as calcium, vitamin D, phosphorus deficiencies. Moreover, other disorder can be associated with its occurrence such as absorption defects due to pancreatic, intestinal, gastric, and renal disorders and hepatobiliary disease. Symptoms are usually seen in childhood and can be varied in severity. Severe forms may be linked to bowing of the legs, poor bone growth, and short stature as well as joint and bone pain. Hypophosphatemic rickets are associated with renal excretion of phosphate, hypophosphatemia, and mineral defects in bones. The familial type of the disease is the most common type of rickets.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/48470">Feature record</a> | <a href="/medgen?term=%22Rickets%22%5BClinical%20Features%5D%20OR%2048470%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_57735"><div><strong>Muscle weakness</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>57735</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0151786</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">Reduced strength of muscles.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/57735">Feature record</a> | <a href="/medgen?term=%22Muscle%20weakness%22%5BClinical%20Features%5D%20OR%2057735%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_67453"><div><strong>Frontal bossing</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>67453</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0221354</a></dd><dt><span class="dotprefix"></span></dt><dd>Congenital Abnormality</dd></dl></div></div></div>
<div class="spaceAbove">Bilateral bulging of the lateral frontal bone prominences with relative sparing of the midline.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/67453">Feature record</a> | <a href="/medgen?term=%22Frontal%20bossing%22%5BClinical%20Features%5D%20OR%2067453%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_69136"><div><strong>Difficulty standing</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>69136</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0241237</a></dd><dt><span class="dotprefix"></span></dt><dd>Sign or Symptom</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/69136">Feature record</a> | <a href="/medgen?term=%22Difficulty%20standing%22%5BClinical%20Features%5D%20OR%2069136%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_371538"><div><strong>Sparse bone trabeculae</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>371538</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1833324</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/371538">Feature record</a> | <a href="/medgen?term=%22Sparse%20bone%20trabeculae%22%5BClinical%20Features%5D%20OR%20371538%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_318844"><div><strong>Thin bony cortex</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>318844</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1833325</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">Abnormal thinning of the cortical region of bones.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/318844">Feature record</a> | <a href="/medgen?term=%22Thin%20bony%20cortex%22%5BClinical%20Features%5D%20OR%20318844%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_371540"><div><strong>Bulging epiphyses</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>371540</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1833329</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">A morphological abnormality of epiphyses whereby they are abnormally outwardly curving (protuberant).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/371540">Feature record</a> | <a href="/medgen?term=%22Bulging%20epiphyses%22%5BClinical%20Features%5D%20OR%20371540%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_323062"><div><strong>Metaphyseal cupping</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>323062</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1837082</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">Metaphyseal cupping refers to an inward bulging of the metaphyseal profile giving the metaphysis a cup-like appearance.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/323062">Feature record</a> | <a href="/medgen?term=%22Metaphyseal%20cupping%22%5BClinical%20Features%5D%20OR%20323062%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_332439"><div><strong>Flat occiput</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>332439</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1837402</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">Reduced convexity of the occiput (posterior part of skull).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/332439">Feature record</a> | <a href="/medgen?term=%22Flat%20occiput%22%5BClinical%20Features%5D%20OR%20332439%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_374021"><div><strong>Deformed rib cage</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>374021</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1838659</a></dd><dt><span class="dotprefix"></span></dt><dd>Anatomical Abnormality</dd></dl></div></div></div>
<div class="spaceAbove">Malformation of the rib cage.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/374021">Feature record</a> | <a href="/medgen?term=%22Deformed%20rib%20cage%22%5BClinical%20Features%5D%20OR%20374021%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_325478"><div><strong>Metaphyseal irregularity</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>325478</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1838662</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">Irregularity of the normally smooth surface of the metaphyses.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/325478">Feature record</a> | <a href="/medgen?term=%22Metaphyseal%20irregularity%22%5BClinical%20Features%5D%20OR%20325478%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_338492"><div><strong>Bulging of the costochondral junction</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>338492</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1848538</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">Abnormal outward curving (protuberance) of the junction of ribs and costal cartilage.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/338492">Feature record</a> | <a href="/medgen?term=%22Bulging%20of%20the%20costochondral%20junction%22%5BClinical%20Features%5D%20OR%20338492%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_336570"><div><strong>Widely patent fontanelles and sutures</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>336570</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1849300</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">An abnormally increased width of the cranial fontanelles and sutures.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/336570">Feature record</a> | <a href="/medgen?term=%22Widely%20patent%20fontanelles%20and%20sutures%22%5BClinical%20Features%5D%20OR%20336570%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_346535"><div><strong>Enlargement of the costochondral junction</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>346535</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1857180</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">Abnormally increased size of the costochondral junctions, which are located between the distal part of the ribs and the costal cartilages, which are bars of hyaline cartilage that connect the ribs to the sternum.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/346535">Feature record</a> | <a href="/medgen?term=%22Enlargement%20of%20the%20costochondral%20junction%22%5BClinical%20Features%5D%20OR%20346535%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_387876"><div><strong>Reduced subcutaneous adipose tissue</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>387876</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1857657</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">A reduced amount of fat tissue in the lowest layer of the integument. This feature can be appreciated by a reduced skinfold thickness.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/387876">Feature record</a> | <a href="/medgen?term=%22Reduced%20subcutaneous%20adipose%20tissue%22%5BClinical%20Features%5D%20OR%20387876%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_346841"><div><strong>Generalized hypotonia</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>346841</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1858120</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">Generalized muscular hypotonia (abnormally low muscle tone).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/346841">Feature record</a> | <a href="/medgen?term=%22Generalized%20hypotonia%22%5BClinical%20Features%5D%20OR%20346841%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_347888"><div><strong>Femoral bowing</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>347888</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1859461</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">Bowing (abnormal curvature) of the femur.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/347888">Feature record</a> | <a href="/medgen?term=%22Femoral%20bowing%22%5BClinical%20Features%5D%20OR%20347888%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_351324"><div><strong>Delayed epiphyseal ossification</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>351324</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1865200</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/351324">Feature record</a> | <a href="/medgen?term=%22Delayed%20epiphyseal%20ossification%22%5BClinical%20Features%5D%20OR%20351324%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_867169"><div><strong>Abdominal wall muscle weakness</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>867169</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4021527</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">Decreased strength of the abdominal musculature.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/867169">Feature record</a> | <a href="/medgen?term=%22Abdominal%20wall%20muscle%20weakness%22%5BClinical%20Features%5D%20OR%20867169%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_1642285"><div><strong>Rachitic rosary</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1642285</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4551565</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">A row of beadlike prominences at the junction of a rib and its cartilage (i.e., enlarged costochondral joints), resembling a rosary. Note that rachitic rosary would have one bead per rib (a swelling at the costochondral junction), while beaded ribs in the context of multiple rib fractures have multiple beads (fractures) along the same rib.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1642285">Feature record</a> | <a href="/medgen?term=%22Rachitic%20rosary%22%5BClinical%20Features%5D%20OR%201642285%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_1807399"><div><strong>Bowing of the legs</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1807399</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5574706</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">A bending or abnormal curvature affecting a long bone of the leg.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1807399">Feature record</a> | <a href="/medgen?term=%22Bowing%20of%20the%20legs%22%5BClinical%20Features%5D%20OR%201807399%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_5705"><div><strong>Hypocalcemia</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>5705</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0020598</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">An abnormally decreased calcium concentration in the blood.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/5705">Feature record</a> | <a href="/medgen?term=%22Hypocalcemia%22%5BClinical%20Features%5D%20OR%205705%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_39327"><div><strong>Hypophosphatemia</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>39327</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0085682</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">An abnormally decreased phosphate concentration in the blood.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/39327">Feature record</a> | <a href="/medgen?term=%22Hypophosphatemia%22%5BClinical%20Features%5D%20OR%2039327%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_65117"><div><strong>Metabolic acidosis</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>65117</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0220981</a></dd><dt><span class="dotprefix"></span></dt><dd>Pathologic Function</dd></dl></div></div></div>
<div class="spaceAbove">Metabolic acidosis (MA) is characterized by a fall in blood pH due to a reduction of serum bicarbonate concentration. This can occur as a result of either the accumulation of acids (high anion gap MA) or the loss of bicarbonate from the gastrointestinal tract or the kidney (hyperchloremic MA). By definition, MA is not due to a respirary cause.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/65117">Feature record</a> | <a href="/medgen?term=%22Metabolic%20acidosis%22%5BClinical%20Features%5D%20OR%2065117%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_167805"><div><strong>Elevated circulating parathyroid hormone level</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>167805</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0857973</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">An abnormal increased concentration of parathyroid hormone.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/167805">Feature record</a> | <a href="/medgen?term=%22Elevated%20circulating%20parathyroid%20hormone%20level%22%5BClinical%20Features%5D%20OR%20167805%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_727252"><div><strong>Elevated circulating alkaline phosphatase concentration</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>727252</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1314665</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">Abnormally increased serum levels of alkaline phosphatase activity.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/727252">Feature record</a> | <a href="/medgen?term=%22Elevated%20circulating%20alkaline%20phosphatase%20concentration%22%5BClinical%20Features%5D%20OR%20727252%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_868662"><div><strong>Decreased circulating calcifediol concentration</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>868662</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4023064</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">A reduced concentration of calcifediol in the blood. Calcifediol is also known as calcidiol, 25-hydroxycholecalciferol and 25-Hydroxyvitamin D3.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/868662">Feature record</a> | <a href="/medgen?term=%22Decreased%20circulating%20calcifediol%20concentration%22%5BClinical%20Features%5D%20OR%20868662%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_868663"><div><strong>Low serum calcitriol</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>868663</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4023065</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">A reduced concentration of calcitriol in the blood. Calcitriol is also known as 1,25-dihydroxycholecalciferol or 1,25-dihydroxyvitamin D3.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/868663">Feature record</a> | <a href="/medgen?term=%22Low%20serum%20calcitriol%22%5BClinical%20Features%5D%20OR%20868663%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_868953"><div><strong>Abnormal blood chloride concentration</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>868953</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4023367</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">An abnormality of chloride homeostasis or concentration in the body.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/868953">Feature record</a> | <a href="/medgen?term=%22Abnormal%20blood%20chloride%20concentration%22%5BClinical%20Features%5D%20OR%20868953%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_3730"><div><strong>Enamel hypoplasia</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>3730</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0011351</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Developmental hypoplasia of the dental enamel.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/3730">Feature record</a> | <a href="/medgen?term=%22Enamel%20hypoplasia%22%5BClinical%20Features%5D%20OR%203730%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_68678"><div><strong>Delayed eruption of teeth</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>68678</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0239174</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">Delayed tooth eruption, which can be defined as tooth eruption more than 2 SD beyond the mean eruption age.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/68678">Feature record</a> | <a href="/medgen?term=%22Delayed%20eruption%20of%20teeth%22%5BClinical%20Features%5D%20OR%2068678%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_9368"><div><strong>Secondary hyperparathyroidism</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>9368</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0020503</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Secondary hyperparathyroidism refers to the production of higher than normal levels of parathyroid hormone in the presence of hypocalcemia.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/9368">Feature record</a> | <a href="/medgen?term=%22Secondary%20hyperparathyroidism%22%5BClinical%20Features%5D%20OR%209368%5Buid%5D">Search on this feature</a></div></div><div class="TreeLite" data-jigconfig="closed: 1"><div class="concept-def"><a class="small" href="#" onclick="jQuery(&quot;.TreeLite&quot;,&quot;#ID_102&quot;).TreeLite().openAll(); return false;">Show all</a><a class="small" href="#" onclick="jQuery(&quot;.TreeLite&quot;,&quot;#ID_102&quot;).TreeLite().closeAll(); return false;">Hide all</a></div><ul><li><span class="TLline">Abnormality of head or neck</span><ul><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_68678" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Delayed eruption of teeth</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_3730" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Enamel hypoplasia</a></span></li></ul></li><li><span class="TLline">Abnormality of limbs</span><ul><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_333151" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Enlargement of the ankles</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_325479" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Enlargement of the wrists</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_869374" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Fibular bowing</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_1380263" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Subperiosteal bone resorption</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_332360" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Tibial bowing</a></span></li></ul></li><li><span class="TLline">Abnormality of metabolism/homeostasis</span><ul><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_868953" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Abnormal blood chloride concentration</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_868662" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Decreased circulating calcifediol concentration</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_727252" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Elevated circulating alkaline phosphatase concentration</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_167805" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Elevated circulating parathyroid hormone level</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_5705" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hypocalcemia</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_39327" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hypophosphatemia</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_868663" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Low serum calcitriol</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_65117" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Metabolic acidosis</a></span></li></ul></li><li><span class="TLline">Abnormality of the digestive system</span><ul><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_340750" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Protuberant abdomen</a></span></li></ul></li><li><span class="TLline">Abnormality of the endocrine system</span><ul><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_9368" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Secondary hyperparathyroidism</a></span></li></ul></li><li><span class="TLline">Abnormality of the genitourinary system</span><ul><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_339863" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Generalized aminoaciduria</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_9381" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hypocalciuria</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_56402" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Ketonuria</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_335116" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Renal phosphate wasting</a></span></li></ul></li><li><span class="TLline">Abnormality of the musculoskeletal system</span><ul><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_867169" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Abdominal wall muscle weakness</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_1807399" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Bowing of the legs</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_371540" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Bulging epiphyses</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_338492" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Bulging of the costochondral junction</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_374021" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Deformed rib cage</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_351324" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Delayed epiphyseal ossification</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_69136" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Difficulty standing</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_346535" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Enlargement of the costochondral junction</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_347888" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Femoral bowing</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_332439" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Flat occiput</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_67453" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Frontal bossing</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_346841" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Generalized hypotonia</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_10133" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hypotonia</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_323062" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Metaphyseal cupping</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_325478" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Metaphyseal irregularity</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_57735" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Muscle weakness</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_1642285" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Rachitic rosary</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_42094" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Recurrent fractures</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_387876" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Reduced subcutaneous adipose tissue</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_48470" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Rickets</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_371538" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Sparse bone trabeculae</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_318844" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Thin bony cortex</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_336570" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Widely patent fontanelles and sutures</a></span></li></ul></li><li><span class="TLline">Abnormality of the nervous system</span><ul><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_107895" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Gait disturbance</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_340985" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hypocalcemic seizures</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_397841" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Irritability</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_381392" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Motor delay</a></span></li></ul></li><li><span class="TLline">Constitutional symptom</span><ul><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_57489" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Bone pain</a></span></li></ul></li><li><span class="TLline">Growth abnormality</span><ul><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_746019" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Failure to thrive</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_99124" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Growth delay</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_395343" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Postnatal growth retardation</a></span></li></ul></li></ul></div></div>
</div>
<div class="portlet mgSection" id="ID_118">
<div class="portlet_head mgSectionHead ui-widget-header"><h1 class="nl" id="Term_Hierarchy">Term Hierarchy</h1><a sid="118" href="#" class="portlet_shutter" title="Show/hide content"></a></div>
<div class="portlet_content ln HierarchyGTR"><div class="jig-ncbitabs"><ul><li><a href="#tabGTR">GTR</a></li><li><a href="#tabMGEN">MeSH</a></li></ul><div id="tabGTR"><div class="search_result"><div class="rprts"><div class="chiclet_legend"><span class="chiclet_list" style="position:static;"><span title="Clinical test" class="chiclet Ccolor round">C</span><span>Clinical test,  </span><span title="Research test" class="chiclet Rcolor round">R</span><span>Research test,  </span><span title="OMIM" class="chiclet Ocolor ">O</span><span>OMIM,  </span><span title="GeneReview" class="chiclet Gcolor">G</span><span><em>GeneReviews</em>,  </span><span title="ClinVar" class="chiclet Vcolor">V</span><span>ClinVar  </span></span></div><div id="hierarchy" class="margin_t1"><div class="ds_tree"><ul><li class="matched_ds"><span class="chiclet_list"><span class="chiclet Ccolor round" title="Clinical test"><a target="_blank" href="/gtr/tests/?term=C0268689[DISCUI]&amp;test_type=Clinical" ref="ncbi_uid=124344">C</a></span><span class="chiclet Rcolor round" title="Research test"><a target="_blank" href="/gtr/tests/?term=C0268689[DISCUI]&amp;test_type=Research&amp;redirect=true" ref="ncbi_uid=124344">R</a></span><span class="chiclet Ocolor" title="OMIM"><a ref="ncbi_uid=124344" target="_blank" href="/omim/264700">O</a></span><span class="chiclet unavailable" title="GeneReviews">G</span><span class="chiclet Vcolor" title="ClinVar"><a target="_blank" href="/clinvar?LinkName=medgen_clinvar&amp;from_uid=124344" ref="ncbi_uid=124344">V</a></span></span><span class="TLline">Vitamin D-dependent rickets, type 1</span></li></ul></div></div></div></div></div><div id="tabMGEN"><div class="ds_tree"><ul><li><span class="TLline"><a href="/medgen/867443" ref="tree=MeSH" title="MedGen record for Phenotypic abnormality">Phenotypic abnormality</a></span><ul><li><span class="TLline"><a href="/medgen/867398" ref="tree=MeSH" title="MedGen record for Abnormality of metabolism/homeostasis">Abnormality of metabolism/homeostasis</a></span><ul><li><span class="TLline"><a href="/medgen/1703500" ref="tree=MeSH" title="MedGen record for Abnormal metabolism">Abnormal metabolism</a></span><ul><li><span class="TLline"><a href="/medgen/867647" ref="tree=MeSH" title="MedGen record for Abnormality of vitamin metabolism">Abnormality of vitamin metabolism</a></span><ul><li><span class="TLline"><a href="/medgen/867646" ref="tree=MeSH" title="MedGen record for Abnormality of vitamin D metabolism">Abnormality of vitamin D metabolism</a></span><ul><li><span class="TLline"><a href="/medgen/12114" ref="tree=MeSH" title="MedGen record for Decreased circulating vitamin D concentration">Decreased circulating vitamin D concentration</a></span><ul><li><span class="matched_ds">Vitamin D-dependent rickets, type 1</span></li></ul></li></ul></li></ul></li></ul></li></ul></li></ul></li></ul></div></div></div></div>
</div>
<div class="portlet mgSection" id="ID_105">
<div class="portlet_head mgSectionHead ui-widget-header"><h1 class="nl" id="Professional_guidelines">Professional guidelines</h1><a sid="105" href="#" class="portlet_shutter" title="Show/hide content"></a></div>
<div class="portlet_content ln"><h3 class="subhead">PubMed<a class="help jig-ncbi-popper" data-jig="ncbipopper" href="#guidelinesHelpPM"><img class="pulldown" src="//static.pubmed.gov/portal/portal3rc.fcgi/4223267/img/4204968" /></a></h3>
<div class="nl"><a target="_blank" href="/pubmed/34492747">Genotype and phenotypic spectrum of vitamin D dependent rickets type 1A: our experience and systematic review.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Dodamani MH,
Sehemby M,
Memon SS,
Sarathi V,
Lila AR,
Chapla A,
Bhandare VV,
Patil VA,
Shah NS,
Thomas N,
Kunwar A,
Bandgar TR</span><br />
<span class="medgenPMjournal">J Pediatr Endocrinol Metab</span>
2021 Dec 20;34(12):1505-1513.
Epub 2021 Sep 8
doi: 10.1515/jpem-2021-0403.
<span class="bold">PMID: </span><a href="/pubmed/34492747" target="_blank">34492747</a></div>
<div><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=(%22vitamin%20d-dependent%20rickets%2C%20type%201%22%5Btiab%3A~0%5D)%20AND%20(%22english%20and%20humans%22%5BFilter%5D)%20AND%20(%20(%22practice%20guideline%22%5BFilter%5D)%20OR%20(practice*%5Btitl%5D%20AND%20(guideline%5Btitl%5D%20OR%20parameter%5Btitl%5D%20OR%20resource%5Btitl%5D%20OR%20bulletin%5Btitl%5D%20OR%20best%5Btitl%5D))%20OR%20(genetic*%5Btitl%5D%20AND%20(evaluation%5Btitl%5D%20OR%20counseling%5Btitl%5D%20OR%20screening%5Btitl%5D%20OR%20test*%5Btitl%5D))%20OR%20(clinical%5Btitl%5D%20AND%20((expert%5Btitl%5D%20AND%20consensus%5Btitl%5D)%20OR%20utility%5Btitl%5D%20OR%20guideline*%5Btitl%5D))%20OR%20(management%5Btitl%5D%20AND%20(clinical%5Btitl%5D%20OR%20diagnos*%5Btitl%5D%20OR%20recommendation%5Btitl%5D%20OR%20pain%5Btitl%5D%20OR%20surveillance%5Btitl%5D%20OR%20emergency%5Btitl%5D%20OR%20guideline*%5Btitl%5D%20OR%20therap*))%20OR%20(treatment%5Btitl%5D%20AND%20((evaluation%5Btitl%5D%20AND%20diagnosis%5Btitl%5D)%20OR%20(assessment%5Btitl%5D%20AND%20prevention%5Btitl%5D)%20OR%20therap*))%20OR%20(Diagnos*%5Btitl%5D%20AND%20(prenatal%5Btitl%5D%20OR%20treatment%5Btitl%5D%20OR%20follow-up%5Btitl%5D%20OR%20statement%5Btitl%5D%20OR%20criteria%5Btitl%5D%20OR%20newborn%5Btitl%5D%20OR%20differential%5Btitl%5D%20OR%20neonatal%5Btitl%5D%20OR%20neonate%5Btitl%5D))%20OR%20(guideline*%5Btitl%5D%20AND%20(pharmacogenetic*%5Btitl%5D%20OR%20recommendation%5Btitl%5D%20OR%20therap*%5Btitl%5D%20OR%20evidence-based%5Btitl%5D%20OR%20consensus%5Btitl%5D%20OR%20(technical%5Btitl%5D%20AND%20standard*%5Btitl%5D)%20OR%20(molecular%5Btitl%5D%20AND%20testing%5Btitl%5D)))%20OR%20(risk%5Btitl%5D%20AND%20assessment%5Btitl%5D)%20OR%20(recommendation*%5Btitl%5D%20AND%20(statement%5Btitl%5D%20OR%20Evidence-based%5Btitl%5D%20OR%20Consensus%5Btitl%5D))%20OR%20(care%20AND%20((Patient%5Btitl%5D%20AND%20standard*%5Btitl%5D)%20OR%20primary%5Btitl%5D%20OR%20psychosocial%5Btitl%5D))%20OR%20(Health%5Btitl%5D%20AND%20supervision%5Btitl%5D)%20OR%20(statement%5Btitl%5D%20AND%20(policy%5Btitl%5D%20OR%20position%5Btitl%5D%20OR%20Consensus%5Btitl%5D))%20OR%20(pharmacogenetics%5Btitl%5D%20AND%20(Dosing%5Btitl%5D%20OR%20therap*%5Btitl%5D%20OR%20genotype*%5Btitl%5D%20OR%20drug*%5Btitl%5D))%20OR%20(Chemotherapy%5Btitl%5D%20AND%20decision*%5Btitl%5D)%20OR%20(screening%5Btitl%5D%20AND%20(newborn%5Btitl%5D%20OR%20neonat*%5Btitl%5D%20OR%20detection%5Btitl%5D%20OR%20diagnos*%5Btitl%5D))%20OR%20(criteria%5Btitl%5D%20OR%20genotype*%5Btitl%5D)%20)%20NOT%20(%22Case%20reports%22%5BPublication%20type%5D%20OR%20%22clinical%20study%22%5BPublication%20Type%5D%20OR%20%22randomized%20controlled%20trial%22%5BPublication%20Type%5D)" title="PubMed search">See all (1)</a></div></div>
</div>
<div class="display-none help-popup" id="guidelinesHelpPM">These guidelines are articles in PubMed that match specific search criteria developed by MedGen to capture the most relevant practice guidelines. This list may not be comprehensive and may include broader topics as well. See the <a href="/medgen/docs/faq/" title="Frequently asked questions" target="_blank">FAQ</a> for details.</div><div class="display-none help-popup" id="guidelinesHelpCurated">These guidelines are manually curated by the MedGen team
to supplement articles available in PubMed. See the <a href="/medgen/docs/faq/" title="Frequently asked questions" target="_blank">FAQ</a> for details.</div>
<div class="portlet mgSection" id="ID_103">
<div class="portlet_head mgSectionHead ui-widget-header"><h1 class="nl" id="Recent_clinical_studies">Recent clinical studies</h1><a sid="103" href="#" class="portlet_shutter" title="Show/hide content"></a></div>
<div class="portlet_content ln"><h3 class="subhead">Etiology</h3>
<div class="nl"><a target="_blank" href="/pubmed/39034346">A toddler with severe vitamin D-dependent rickets type 1 A (VDDR1A), hungry bone syndrome, and severe RSV infection: presentation and therapeutic challenges.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Statha E,
Paltoglou G,
Doulgeraki A,
Vakali E,
Vlachopapadopoulou E,
Economou S,
Sakou II,
Soldatou A,
Karavanaki K,
Fryssira E</span><br />
<span class="medgenPMjournal">Hormones (Athens)</span>
2024 Dec;23(4):835-839.
Epub 2024 Jul 22
doi: 10.1007/s42000-024-00579-2.
<span class="bold">PMID: </span><a href="/pubmed/39034346" target="_blank">39034346</a></div>
<div class="nl"><a target="_blank" href="/pubmed/34492747">Genotype and phenotypic spectrum of vitamin D dependent rickets type 1A: our experience and systematic review.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Dodamani MH,
Sehemby M,
Memon SS,
Sarathi V,
Lila AR,
Chapla A,
Bhandare VV,
Patil VA,
Shah NS,
Thomas N,
Kunwar A,
Bandgar TR</span><br />
<span class="medgenPMjournal">J Pediatr Endocrinol Metab</span>
2021 Dec 20;34(12):1505-1513.
Epub 2021 Sep 8
doi: 10.1515/jpem-2021-0403.
<span class="bold">PMID: </span><a href="/pubmed/34492747" target="_blank">34492747</a></div>
<div class="nl"><a target="_blank" href="/pubmed/23444327">No evidence of association between mutant alleles of the CYP27B1 gene and multiple sclerosis.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Ban M,
Caillier S,
Mero IL,
Myhr KM,
Celius EG,
Aarseth J,
Torkildsen Ø,
Harbo HF,
Oksenberg J,
Hauser SL,
Sawcer S,
Compston A</span><br />
<span class="medgenPMjournal">Ann Neurol</span>
2013 Mar;73(3):430-2.
Epub 2013 Feb 26
doi: 10.1002/ana.23833.
<span class="bold">PMID: </span><a href="/pubmed/23444327" target="_blank">23444327</a><a href="/pmc/articles/PMC3631291" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div class="nl"><a target="_blank" href="/pubmed/19095780">Incidence and prevalence of nutritional and hereditary rickets in southern Denmark.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Beck-Nielsen SS,
Brock-Jacobsen B,
Gram J,
Brixen K,
Jensen TK</span><br />
<span class="medgenPMjournal">Eur J Endocrinol</span>
2009 Mar;160(3):491-7.
Epub 2008 Dec 18
doi: 10.1530/EJE-08-0818.
<span class="bold">PMID: </span><a href="/pubmed/19095780" target="_blank">19095780</a></div>
<div class="nl"><a target="_blank" href="/pubmed/11013342">1alpha-Hydroxylase and the action of vitamin D.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Hewison M,
Zehnder D,
Bland R,
Stewart PM</span><br />
<span class="medgenPMjournal">J Mol Endocrinol</span>
2000 Oct;25(2):141-8.
doi: 10.1677/jme.0.0250141.
<span class="bold">PMID: </span><a href="/pubmed/11013342" target="_blank">11013342</a></div>
<div><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=%22Vitamin%20D-dependent%20rickets%2C%20type%201%22%20AND%20Etiology%2Fbroad%5Bfilter%5D%20%20AND%20%22english%20and%20humans%22%5Bfilter%5D%20NOT%20comment%5BPTYP%5D%20NOT%20letter%5BPTYP%5D" title="PubMed search">See all (6)</a></div><h3 class="subhead">Diagnosis</h3>
<div class="nl"><a target="_blank" href="/pubmed/39778955">Respiratory insufficiency as a rare presentation in a child with vitamin D-dependent rickets type 1.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Parmar A,
Shah N,
Khadse S,
Ghildiyal R</span><br />
<span class="medgenPMjournal">BMJ Case Rep</span>
2025 Jan 8;18(1)
doi: 10.1136/bcr-2024-262835.
<span class="bold">PMID: </span><a href="/pubmed/39778955" target="_blank">39778955</a></div>
<div class="nl"><a target="_blank" href="/pubmed/39034346">A toddler with severe vitamin D-dependent rickets type 1 A (VDDR1A), hungry bone syndrome, and severe RSV infection: presentation and therapeutic challenges.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Statha E,
Paltoglou G,
Doulgeraki A,
Vakali E,
Vlachopapadopoulou E,
Economou S,
Sakou II,
Soldatou A,
Karavanaki K,
Fryssira E</span><br />
<span class="medgenPMjournal">Hormones (Athens)</span>
2024 Dec;23(4):835-839.
Epub 2024 Jul 22
doi: 10.1007/s42000-024-00579-2.
<span class="bold">PMID: </span><a href="/pubmed/39034346" target="_blank">39034346</a></div>
<div class="nl"><a target="_blank" href="/pubmed/34492747">Genotype and phenotypic spectrum of vitamin D dependent rickets type 1A: our experience and systematic review.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Dodamani MH,
Sehemby M,
Memon SS,
Sarathi V,
Lila AR,
Chapla A,
Bhandare VV,
Patil VA,
Shah NS,
Thomas N,
Kunwar A,
Bandgar TR</span><br />
<span class="medgenPMjournal">J Pediatr Endocrinol Metab</span>
2021 Dec 20;34(12):1505-1513.
Epub 2021 Sep 8
doi: 10.1515/jpem-2021-0403.
<span class="bold">PMID: </span><a href="/pubmed/34492747" target="_blank">34492747</a></div>
<div class="nl"><a target="_blank" href="/pubmed/27399352">Vitamin D-Dependent Rickets Type 1 Caused by Mutations in CYP27B1 Affecting Protein Interactions With Adrenodoxin.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Zalewski A,
Ma NS,
Legeza B,
Renthal N,
Flück CE,
Pandey AV</span><br />
<span class="medgenPMjournal">J Clin Endocrinol Metab</span>
2016 Sep;101(9):3409-18.
Epub 2016 Jul 11
doi: 10.1210/jc.2016-2124.
<span class="bold">PMID: </span><a href="/pubmed/27399352" target="_blank">27399352</a></div>
<div class="nl"><a target="_blank" href="/pubmed/22145480">Vitamin D dependent rickets, diagnostic and therapeutic difficulties: two case reports.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Donghi V,
Di Frenna M,
di Lascio A,
Chiumello G,
Weber G</span><br />
<span class="medgenPMjournal">J Pediatr Endocrinol Metab</span>
2011;24(9-10):801-5.
doi: 10.1515/jpem.2011.214.
<span class="bold">PMID: </span><a href="/pubmed/22145480" target="_blank">22145480</a></div>
<div><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=%22Vitamin%20D-dependent%20rickets%2C%20type%201%22%20AND%20Diagnosis%2Fbroad%5Bfilter%5D%20%20AND%20%22english%20and%20humans%22%5Bfilter%5D%20NOT%20comment%5BPTYP%5D%20NOT%20letter%5BPTYP%5D" title="PubMed search">See all (8)</a></div><h3 class="subhead">Therapy</h3>
<div class="nl"><a target="_blank" href="/pubmed/39778955">Respiratory insufficiency as a rare presentation in a child with vitamin D-dependent rickets type 1.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Parmar A,
Shah N,
Khadse S,
Ghildiyal R</span><br />
<span class="medgenPMjournal">BMJ Case Rep</span>
2025 Jan 8;18(1)
doi: 10.1136/bcr-2024-262835.
<span class="bold">PMID: </span><a href="/pubmed/39778955" target="_blank">39778955</a></div>
<div class="nl"><a target="_blank" href="/pubmed/25371233">A novel pathogenic mutation of the CYP27B1 gene in a patient with vitamin D-dependent rickets type 1: a case report.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Babiker AM,
Al Gadi I,
Al-Jurayyan NA,
Al Nemri AM,
Al Haboob AA,
Al Boukai AA,
Al Zahrani A,
Habib HA</span><br />
<span class="medgenPMjournal">BMC Res Notes</span>
2014 Nov 5;7:783.
doi: 10.1186/1756-0500-7-783.
<span class="bold">PMID: </span><a href="/pubmed/25371233" target="_blank">25371233</a><a href="/pmc/articles/PMC4232664" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div class="nl"><a target="_blank" href="/pubmed/22145480">Vitamin D dependent rickets, diagnostic and therapeutic difficulties: two case reports.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Donghi V,
Di Frenna M,
di Lascio A,
Chiumello G,
Weber G</span><br />
<span class="medgenPMjournal">J Pediatr Endocrinol Metab</span>
2011;24(9-10):801-5.
doi: 10.1515/jpem.2011.214.
<span class="bold">PMID: </span><a href="/pubmed/22145480" target="_blank">22145480</a></div>
<div class="nl"><a target="_blank" href="/pubmed/20511055">Genetic disorders and defects in vitamin d action.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Malloy PJ,
Feldman D</span><br />
<span class="medgenPMjournal">Endocrinol Metab Clin North Am</span>
2010 Jun;39(2):333-46, table of contents.
doi: 10.1016/j.ecl.2010.02.004.
<span class="bold">PMID: </span><a href="/pubmed/20511055" target="_blank">20511055</a><a href="/pmc/articles/PMC2879401" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=%22Vitamin%20D-dependent%20rickets%2C%20type%201%22%20AND%20Therapy%2Fbroad%5Bfilter%5D%20%20AND%20%22english%20and%20humans%22%5Bfilter%5D%20NOT%20comment%5BPTYP%5D%20NOT%20letter%5BPTYP%5D" title="PubMed search">See all (4)</a></div><h3 class="subhead">Prognosis</h3>
<div class="nl"><a target="_blank" href="/pubmed/39034346">A toddler with severe vitamin D-dependent rickets type 1 A (VDDR1A), hungry bone syndrome, and severe RSV infection: presentation and therapeutic challenges.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Statha E,
Paltoglou G,
Doulgeraki A,
Vakali E,
Vlachopapadopoulou E,
Economou S,
Sakou II,
Soldatou A,
Karavanaki K,
Fryssira E</span><br />
<span class="medgenPMjournal">Hormones (Athens)</span>
2024 Dec;23(4):835-839.
Epub 2024 Jul 22
doi: 10.1007/s42000-024-00579-2.
<span class="bold">PMID: </span><a href="/pubmed/39034346" target="_blank">39034346</a></div>
<div class="nl"><a target="_blank" href="/pubmed/34492747">Genotype and phenotypic spectrum of vitamin D dependent rickets type 1A: our experience and systematic review.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Dodamani MH,
Sehemby M,
Memon SS,
Sarathi V,
Lila AR,
Chapla A,
Bhandare VV,
Patil VA,
Shah NS,
Thomas N,
Kunwar A,
Bandgar TR</span><br />
<span class="medgenPMjournal">J Pediatr Endocrinol Metab</span>
2021 Dec 20;34(12):1505-1513.
Epub 2021 Sep 8
doi: 10.1515/jpem-2021-0403.
<span class="bold">PMID: </span><a href="/pubmed/34492747" target="_blank">34492747</a></div>
<div class="nl"><a target="_blank" href="/pubmed/27399352">Vitamin D-Dependent Rickets Type 1 Caused by Mutations in CYP27B1 Affecting Protein Interactions With Adrenodoxin.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Zalewski A,
Ma NS,
Legeza B,
Renthal N,
Flück CE,
Pandey AV</span><br />
<span class="medgenPMjournal">J Clin Endocrinol Metab</span>
2016 Sep;101(9):3409-18.
Epub 2016 Jul 11
doi: 10.1210/jc.2016-2124.
<span class="bold">PMID: </span><a href="/pubmed/27399352" target="_blank">27399352</a></div>
<div class="nl"><a target="_blank" href="/pubmed/21604088">Mutation prediction by PolyPhen or functional assay, a detailed comparison of CYP27B1 missense mutations.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Zou M,
Baitei EY,
Alzahrani AS,
Parhar RS,
Al-Mohanna FA,
Meyer BF,
Shi Y</span><br />
<span class="medgenPMjournal">Endocrine</span>
2011 Aug;40(1):14-20.
Epub 2011 May 21
doi: 10.1007/s12020-011-9489-7.
<span class="bold">PMID: </span><a href="/pubmed/21604088" target="_blank">21604088</a></div>
<div class="nl"><a target="_blank" href="/pubmed/19095780">Incidence and prevalence of nutritional and hereditary rickets in southern Denmark.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Beck-Nielsen SS,
Brock-Jacobsen B,
Gram J,
Brixen K,
Jensen TK</span><br />
<span class="medgenPMjournal">Eur J Endocrinol</span>
2009 Mar;160(3):491-7.
Epub 2008 Dec 18
doi: 10.1530/EJE-08-0818.
<span class="bold">PMID: </span><a href="/pubmed/19095780" target="_blank">19095780</a></div>
<div><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=%22Vitamin%20D-dependent%20rickets%2C%20type%201%22%20AND%20Prognosis%2Fbroad%5Bfilter%5D%20%20AND%20%22english%20and%20humans%22%5Bfilter%5D%20NOT%20comment%5BPTYP%5D%20NOT%20letter%5BPTYP%5D" title="PubMed search">See all (5)</a></div><h3 class="subhead">Clinical prediction guides</h3>
<div class="nl"><a target="_blank" href="/pubmed/23483640">No evidence for a role of rare CYP27B1 functional variations in multiple sclerosis.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Barizzone N,
Pauwels I,
Luciano B,
Franckaert D,
Guerini FR,
Cosemans L,
Hilven K,
Salviati A,
Dooley J,
Danso-Abeam D,
di Sapio A,
Cavalla P,
Decallonne B,
Mathieu C,
Liston A,
Leone M,
Dubois B,
D'Alfonso S,
Goris A</span><br />
<span class="medgenPMjournal">Ann Neurol</span>
2013 Mar;73(3):433-7.
Epub 2013 Mar 11
doi: 10.1002/ana.23834.
<span class="bold">PMID: </span><a href="/pubmed/23483640" target="_blank">23483640</a></div>
<div class="nl"><a target="_blank" href="/pubmed/21604088">Mutation prediction by PolyPhen or functional assay, a detailed comparison of CYP27B1 missense mutations.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Zou M,
Baitei EY,
Alzahrani AS,
Parhar RS,
Al-Mohanna FA,
Meyer BF,
Shi Y</span><br />
<span class="medgenPMjournal">Endocrine</span>
2011 Aug;40(1):14-20.
Epub 2011 May 21
doi: 10.1007/s12020-011-9489-7.
<span class="bold">PMID: </span><a href="/pubmed/21604088" target="_blank">21604088</a></div>
<div class="nl"><a target="_blank" href="/pubmed/12050193">Novel gene mutations in patients with 1alpha-hydroxylase deficiency that confer partial enzyme activity in vitro.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Wang X,
Zhang MY,
Miller WL,
Portale AA</span><br />
<span class="medgenPMjournal">J Clin Endocrinol Metab</span>
2002 Jun;87(6):2424-30.
doi: 10.1210/jcem.87.6.8534.
<span class="bold">PMID: </span><a href="/pubmed/12050193" target="_blank">12050193</a></div>
<div class="nl"><a target="_blank" href="/pubmed/11013342">1alpha-Hydroxylase and the action of vitamin D.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Hewison M,
Zehnder D,
Bland R,
Stewart PM</span><br />
<span class="medgenPMjournal">J Mol Endocrinol</span>
2000 Oct;25(2):141-8.
doi: 10.1677/jme.0.0250141.
<span class="bold">PMID: </span><a href="/pubmed/11013342" target="_blank">11013342</a></div>
<div><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=%22Vitamin%20D-dependent%20rickets%2C%20type%201%22%20AND%20Clinical%20prediction%20guides%2Fbroad%5Bfilter%5D%20%20AND%20%22english%20and%20humans%22%5Bfilter%5D%20NOT%20comment%5BPTYP%5D%20NOT%20letter%5BPTYP%5D" title="PubMed search">See all (4)</a></div></div>
</div>
<div class="portlet mgSection" id="ID_104">
<div class="portlet_head mgSectionHead ui-widget-header"><h1 class="nl" id="Recent_systematic_reviews">Recent systematic reviews</h1><a sid="104" href="#" class="portlet_shutter" title="Show/hide content"></a></div>
<div class="portlet_content ln">
<div class="nl"><a target="_blank" href="/pubmed/34492747">Genotype and phenotypic spectrum of vitamin D dependent rickets type 1A: our experience and systematic review.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Dodamani MH,
Sehemby M,
Memon SS,
Sarathi V,
Lila AR,
Chapla A,
Bhandare VV,
Patil VA,
Shah NS,
Thomas N,
Kunwar A,
Bandgar TR</span><br />
<span class="medgenPMjournal">J Pediatr Endocrinol Metab</span>
2021 Dec 20;34(12):1505-1513.
Epub 2021 Sep 8
doi: 10.1515/jpem-2021-0403.
<span class="bold">PMID: </span><a href="/pubmed/34492747" target="_blank">34492747</a></div>
<div><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=%22Vitamin%20D-dependent%20rickets%2C%20type%201%22%20AND%20systematic%5Bsb%5D%20AND%20%22english%20and%20humans%22%5Bfilter%5D%20NOT%20comment%5BPTYP%5D%20NOT%20letter%5BPTYP%5D" title="PubMed search">See all (1)</a></div></div>
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<h2 class="offscreen_noflow">Supplemental Content</h2>
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<div class="portlet mgSection" id="ID_113">
<div class="portlet_head mgSectionHead ui-widget-header"><h1 class="nl" id="Table_of_contents">Table of contents</h1><a sid="113" href="#" class="portlet_shutter" title="Show/hide content"></a></div>
<div class="portlet_content ln"><ul id="my-toc"></ul></div>
</div>
<div class="portlet mgSection" id="ID_106">
<div class="portlet_head mgSectionHead ui-widget-header"><h1 class="nl" id="Genetic_Testing_Registry">Genetic Testing Registry</h1><a sid="106" href="#" class="portlet_shutter" title="Show/hide content"></a></div>
<div class="portlet_content ln"><ul><li><a href="/gtr/tests?term=C0268689%5bDISCUI%5d&amp;filter=method%3A2%5F8" target="_blank">Deletion/duplication analysis (8)</a></li>
<li><a href="/gtr/tests?term=C0268689%5bDISCUI%5d&amp;test_type=Research" target="_blank">Research (1)</a></li>
<li><a href="/gtr/tests?term=C0268689%5bDISCUI%5d&amp;filter=method%3A2%5F7" target="_blank">Sequence analysis of the entire coding region (14)</a></li>
<li><a href="/gtr/tests?term=C0268689%5bDISCUI%5d&amp;filter=method%3A2%5F19" target="_blank">Targeted variant analysis (2)</a></li>
<li class="portletSeeAll portletSeeAllPad"><total><a href="/gtr/tests?term=C0268689%5bDISCUI%5d" target="_blank">See all (16)</a></total></li>
</ul></div>
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<div class="portlet_head mgSectionHead ui-widget-header"><h1 class="nl" id="Clinical_resources">Clinical resources</h1><a sid="119" href="#" class="portlet_shutter" title="Show/hide content"></a></div>
<div class="portlet_content ln"><ul><li><a href="http://www.orpha.net/consor/cgi-bin/OC_Exp.php?Expert=289157" target="_blank">Orphanet</a></li><li><a href="https://clinicaltrials.gov/search?cond=Vitamin%20D-dependent%20rickets,%20type%201" target="_blank">ClinicalTrials.gov</a></li></ul></div>
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<div class="portlet_head mgSectionHead ui-widget-header"><h1 class="nl" id="Practice_guidelines">Practice guidelines</h1><a sid="121" href="#" class="portlet_shutter" title="Show/hide content"></a></div>
<div class="portlet_content ln"><ul class="a_poppers"><li><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=(%22vitamin%20d-dependent%20rickets%2C%20type%201%22%5Btiab%3A~0%5D)%20AND%20(%22english%20and%20humans%22%5BFilter%5D)%20AND%20(%20(%22practice%20guideline%22%5BFilter%5D)%20OR%20(practice*%5Btitl%5D%20AND%20(guideline%5Btitl%5D%20OR%20parameter%5Btitl%5D%20OR%20resource%5Btitl%5D%20OR%20bulletin%5Btitl%5D%20OR%20best%5Btitl%5D))%20OR%20(genetic*%5Btitl%5D%20AND%20(evaluation%5Btitl%5D%20OR%20counseling%5Btitl%5D%20OR%20screening%5Btitl%5D%20OR%20test*%5Btitl%5D))%20OR%20(clinical%5Btitl%5D%20AND%20((expert%5Btitl%5D%20AND%20consensus%5Btitl%5D)%20OR%20utility%5Btitl%5D%20OR%20guideline*%5Btitl%5D))%20OR%20(management%5Btitl%5D%20AND%20(clinical%5Btitl%5D%20OR%20diagnos*%5Btitl%5D%20OR%20recommendation%5Btitl%5D%20OR%20pain%5Btitl%5D%20OR%20surveillance%5Btitl%5D%20OR%20emergency%5Btitl%5D%20OR%20guideline*%5Btitl%5D%20OR%20therap*))%20OR%20(treatment%5Btitl%5D%20AND%20((evaluation%5Btitl%5D%20AND%20diagnosis%5Btitl%5D)%20OR%20(assessment%5Btitl%5D%20AND%20prevention%5Btitl%5D)%20OR%20therap*))%20OR%20(Diagnos*%5Btitl%5D%20AND%20(prenatal%5Btitl%5D%20OR%20treatment%5Btitl%5D%20OR%20follow-up%5Btitl%5D%20OR%20statement%5Btitl%5D%20OR%20criteria%5Btitl%5D%20OR%20newborn%5Btitl%5D%20OR%20differential%5Btitl%5D%20OR%20neonatal%5Btitl%5D%20OR%20neonate%5Btitl%5D))%20OR%20(guideline*%5Btitl%5D%20AND%20(pharmacogenetic*%5Btitl%5D%20OR%20recommendation%5Btitl%5D%20OR%20therap*%5Btitl%5D%20OR%20evidence-based%5Btitl%5D%20OR%20consensus%5Btitl%5D%20OR%20(technical%5Btitl%5D%20AND%20standard*%5Btitl%5D)%20OR%20(molecular%5Btitl%5D%20AND%20testing%5Btitl%5D)))%20OR%20(risk%5Btitl%5D%20AND%20assessment%5Btitl%5D)%20OR%20(recommendation*%5Btitl%5D%20AND%20(statement%5Btitl%5D%20OR%20Evidence-based%5Btitl%5D%20OR%20Consensus%5Btitl%5D))%20OR%20(care%20AND%20((Patient%5Btitl%5D%20AND%20standard*%5Btitl%5D)%20OR%20primary%5Btitl%5D%20OR%20psychosocial%5Btitl%5D))%20OR%20(Health%5Btitl%5D%20AND%20supervision%5Btitl%5D)%20OR%20(statement%5Btitl%5D%20AND%20(policy%5Btitl%5D%20OR%20position%5Btitl%5D%20OR%20Consensus%5Btitl%5D))%20OR%20(pharmacogenetics%5Btitl%5D%20AND%20(Dosing%5Btitl%5D%20OR%20therap*%5Btitl%5D%20OR%20genotype*%5Btitl%5D%20OR%20drug*%5Btitl%5D))%20OR%20(Chemotherapy%5Btitl%5D%20AND%20decision*%5Btitl%5D)%20OR%20(screening%5Btitl%5D%20AND%20(newborn%5Btitl%5D%20OR%20neonat*%5Btitl%5D%20OR%20detection%5Btitl%5D%20OR%20diagnos*%5Btitl%5D))%20OR%20(criteria%5Btitl%5D%20OR%20genotype*%5Btitl%5D)%20)%20NOT%20(%22Case%20reports%22%5BPublication%20type%5D%20OR%20%22clinical%20study%22%5BPublication%20Type%5D%20OR%20%22randomized%20controlled%20trial%22%5BPublication%20Type%5D)" title="PubMed search">PubMed</a><div class="help-popup">See practice and clinical guidelines in PubMed. The search results may include broader topics and may not capture all published guidelines. See the <a href="/medgen/docs/faq/" title="Frequently asked questions" target="_blank">FAQ</a> for details.</div></li></ul></div>
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<div class="portlet_head mgSectionHead ui-widget-header"><h1 class="nl" id="Consumer_resources">Consumer resources</h1><a sid="116" href="#" class="portlet_shutter" title="Show/hide content"></a></div>
<div class="portlet_content ln"><ul><li><a href="http://www.diseaseinfosearch.org/Vitamin+D-dependent+rickets%2C+type+1/9453" target="_blank">Genetic Alliance</a></li><li><a href="https://www.malacards.org/card/vitamin_d_hydroxylation_deficient_rickets_type_1a" target="_blank">MalaCards</a></li><li><a href="https://vsearch.nlm.nih.gov/vivisimo/cgi-bin/query-meta?v:project=medlineplus&amp;query=Vitamin%20D-dependent%20rickets,%20type%201" target="_blank">MedlinePlus</a></li><li><a href="https://medlineplus.gov/genetics/condition/vitamin-d-dependent-rickets" target="_blank">MedlinePlusGenetics (GHR)</a></li><li><a href="https://rarediseases.info.nih.gov/diseases/17319/disease" target="_blank">NCATS Office of Rare Diseases Research (GARD)</a></li></ul></div>
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<h3>Reviews</h3>
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<a href="/pubmed/clinical?term=Vitamin%20D-dependent%20rickets,%20type%201" ref="ncbi_uid=&amp;discoId=gtr_reviews&amp;linkpos=1&amp;linkpostotal=2" target="_blank">PubMed Clinical Queries</a>
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<li>
<a href="/pubmed?term=Vitamin%20D-dependent%20rickets,%20type%201%20AND%20humans[mesh]%20AND%20review[publication%20type]" ref="ncbi_uid=&amp;discoId=gtr_reviews&amp;linkpos=2&amp;linkpostotal=2" target="_blank">Reviews in PubMed</a>
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