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<meta name="keywords" content="C0011175, dehydrated, dehydration, disease or syndrome, exsiccosis, pure water depletion syndrome, 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="A condition resulting from the excessive loss of water from the body. It is usually caused by severe diarrhea, vomiting or diaphoresis." /><meta name="robots" content="index,nofollow,noarchive" />
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<!--
UID=8273
ConceptID=C0011175
-->
<!--imgCountBooks = 0--><h1 class="medgenTitle"><div class="MedGenTitleText">Dehydration</div></h1><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>8273</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.">C0011175</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>Dehydrated; Exsiccosis; Pure water depletion syndrome</td></tr>
<tr><td><span class="bold">SNOMED CT: </span></td>
<td>Dehydration (34095006); Pure water depletion syndrome (34095006)</td></tr>
<tr><td colspan="2" class="small"> </td></tr><tr><td>HPO:</td>
<td><a target="_blank" title="Human Phenotype Ontology" href="https://hpo.jax.org/app/browse/term/HP:0001944">HP:0001944</a></td></tr>
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<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">A condition resulting from the excessive loss of water from the body. It is usually caused by severe diarrhea, vomiting or diaphoresis. [from <a title="NCI Thesaurus" href="http://ncit.nci.nih.gov" class="defSource" target="_blank">NCI</a>]</div>
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<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=C0011175[DISCUI]&amp;test_type=Clinical" ref="ncbi_uid=8273">C</a></span><span class="chiclet unavailable round" title="Research Tests">R</span><span class="chiclet unavailable" title="OMIM">O</span><span class="chiclet unavailable" title="GeneReviews">G</span><span class="chiclet unavailable" title="ClinVar">V</span></span><span class="TLline">Dehydration</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/868551" ref="tree=MeSH" title="MedGen record for Abnormal homeostasis">Abnormal homeostasis</a></span><ul><li><span class="TLline"><a href="/medgen/748573" ref="tree=MeSH" title="MedGen record for Abnormality of fluid regulation">Abnormality of fluid regulation</a></span><ul><li><span class="matched_ds">Dehydration</span><ul><li><span class="TLline"><a href="/medgen/340564" ref="tree=MeSH" title="MedGen record for Hypernatremic dehydration">Hypernatremic dehydration</a></span></li><li><span class="TLline"><a href="/medgen/205119" ref="tree=MeSH" title="MedGen record for Hypertonic dehydration">Hypertonic dehydration</a></span></li></ul></li></ul></li></ul></li></ul></li></ul></li></ul></div></div></div></div>
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<div class="portlet mgSection" id="ID_112">
<div class="portlet_head mgSectionHead ui-widget-header"><h1 class="nl" id="Conditions_with_this_feature">Conditions with this feature</h1><a sid="112" href="#" class="portlet_shutter" title="Show/hide content"></a></div>
<div class="portlet_content ln clinfeat">
<div class="divPopper rprt" id="rdis_41393"><div><strong>Cystic fibrosis</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>41393</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.">C0010674</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Cystic fibrosis (CF) is a multisystem disease affecting epithelia of the respiratory tract, exocrine pancreas, intestine, hepatobiliary system, and exocrine sweat glands. Morbidities include recurrent sinusitis and bronchitis, progressive obstructive pulmonary disease with bronchiectasis, exocrine pancreatic deficiency and malnutrition, pancreatitis, gastrointestinal manifestations (meconium ileus, rectal prolapse, distal intestinal obstructive syndrome), liver disease, diabetes, male infertility due to hypoplasia or aplasia of the vas deferens, and reduced fertility or infertility in some women. Pulmonary disease is the major cause of morbidity and mortality in CF.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/41393">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_66320"><div><strong>Cerebrooculofacioskeletal syndrome 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>66320</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.">C0220722</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">An autosomal recessive subtype of cerebrooculofacioskeletal syndrome caused by mutation(s) in the ERCC6 gene, encoding DNA excision repair protein ERCC-6.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/66320">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_78631"><div><strong>Congenital secretory diarrhea, chloride type</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>78631</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.">C0267662</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Congenital secretory chloride diarrhea is an autosomal recessive form of severe chronic diarrhea characterized by excretion of large amounts of watery stool containing high levels of chloride, resulting in dehydration, hypokalemia, and metabolic alkalosis. The electrolyte disorder resembles the renal disorder Bartter syndrome (see 607364), except that chloride diarrhea is not associated with calcium level abnormalities (summary by Choi et al., 2009).&#13; Genetic Heterogeneity of Diarrhea&#13; Other forms of diarrhea include DIAR2 (251850), caused by mutation in the MYO5B gene (606540) on 18q21; DIAR3 (270420), caused by mutation in the SPINT2 gene (605124) on 19q13; DIAR4 (610370), caused by mutation in the NEUROG3 gene (604882) on 10q21; DIAR5 (613217), caused by mutation in the EPCAM gene (185535) on 2p21; DIAR6 (614616), caused by mutation in the GUCY2C gene (601330) on 12p12; DIAR7 (615863) caused by mutation in the DGAT1 gene (604900) on 8q24; DIAR8 (616868), caused by mutation in the SLC9A3 gene (182307) on 5p15; DIAR9 (618168), caused by mutation in the WNT2B gene (601968) on 1p13; DIAR10 (618183), caused by mutation in the PLVAP gene (607647) on 19p13; DIAR11 (618662), caused by deletion of the intestine critical region (ICR) on 16p13, resulting in loss of expression of the flanking gene PERCC1 (618656); DIAR12 (619445), caused by mutation in the STX3 gene (600876) on 11q12; and DIAR13 (620357), caused by mutation in the ACSL5 gene (605677) on 10q25.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/78631">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_75658"><div><strong>Primary hyperoxaluria, type I</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>75658</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.">C0268164</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Primary hyperoxaluria type 1 (PH1) is caused by deficiency of the liver peroxisomal enzyme alanine-glyoxylate aminotransferase (AGT), which catalyzes the conversion of glyoxylate to glycine. When AGT activity is reduced or absent, glyoxylate is converted to oxalate, which cannot be metabolized and must be excreted by the kidneys. Insoluble calcium oxalate crystals form due to high urinary oxalate concentration. Urinary crystals aggregate, leading to nephrolithiasis (i.e., calcium oxalate kidney stones) in the renal pelvis / urinary tract; often the crystals deposit in kidney parenchyma (nephrocalcinosis). The age at presentation of PH1 ranges from infancy (age &lt;12 months) in 10% of individuals, childhood/adolescence (age 1-17 years) in 70%, and adulthood (age =18 years) in 20%. The natural history of untreated PH1 is (1) progressive decline in kidney function due to complications of nephrolithiasis (e.g., urinary obstruction, infection) and nephrocalcinosis, and (2) in persons with advanced chronic kidney disease (CKD), high plasma oxalate concentrations result in other organ and tissue damage from calcium oxalate deposition (i.e., "oxalosis"), most commonly in the bones, heart, and retina. In the absence of treatment, progression of oxalosis results in death from kidney failure and/or other organ involvement.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/75658">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_120617"><div><strong>Congenital lactase deficiency</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>120617</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.">C0268179</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Congenital lactase deficiency is a severe gastrointestinal disorder characterized by watery diarrhea in infants fed with breast milk or other lactose-containing formulas.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/120617">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_82784"><div><strong>Corticosterone 18-monooxygenase deficiency</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>82784</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.">C0268293</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">CMO type I deficiency is an autosomal recessive disorder caused by a defect in the penultimate biochemical step of aldosterone biosynthesis, the 18-hydroxylation of corticosterone (B) to 18-hydroxycorticosterone (18-OHB). This enzymatic defect results in decreased aldosterone and salt-wasting. In CMO I deficiency, aldosterone is undetectable, whereas its immediate precursor, 18-OHB, is low or normal. These patients have an increased ratio of corticosterone to 18-OHB (Portrat-Doyen et al., 1998).&#13; The CYP11B2 gene product also catalyzes the final step in aldosterone biosynthesis: the 18-oxidation of 18-OHB to aldosterone. A defect in that enzymatic step results in CMO type II deficiency (610600), an allelic disorder with an overlapping phenotype but distinct biochemical features. In CMO II deficiency, aldosterone can be low or normal, but at the expense of increased secretion of 18-OHB. These patients have a low ratio of corticosterone to 18-OHB (Portrat-Doyen et al., 1998).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/82784">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_82822"><div><strong>Isovaleryl-CoA dehydrogenase deficiency</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>82822</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.">C0268575</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Individuals with clinical manifestations of isovaleric acidemia (IVA) have either classic IVA identified on newborn screening or classic IVA with a later diagnosis due to a missed diagnosis or later onset of clinical manifestations. Classic IVA is characterized by acute metabolic decompensations (vomiting, poor feeding, lethargy, hypotonia, seizures, and a distinct odor of sweaty feet). Acute metabolic decompensations are typically triggered by fasting, (febrile) illness (especially gastroenteritis), or increased protein intake. Clinical deterioration often occurs within hours to days after birth. Additional manifestations of classic IVA include developmental delay, intellectual disability and/or impaired cognition, epilepsy, and movement disorder (tremor, dysmetria, extrapyramidal movements). Early treatment in those identified by newborn screening can significantly reduce morbidity and mortality in individuals with classic IVA.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/82822">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_75694"><div><strong>Propionic acidemia</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>75694</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.">C0268579</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">The spectrum of propionic acidemia (PA) ranges from neonatal onset to late-onset disease. Neonatal-onset PA, the most common form, is characterized by a healthy newborn with poor feeding and decreased arousal in the first few days of life, followed by progressive encephalopathy of unexplained origin. Without prompt diagnosis (often through newborn screening) and management, this is followed by progressive encephalopathy manifesting as lethargy, seizures, or coma that can result in death. It is frequently accompanied by metabolic acidosis with anion gap, lactic acidosis, ketonuria, hypoglycemia, hyperammonemia, and cytopenias. Individuals with late-onset PA may remain asymptomatic and suffer a metabolic crisis under catabolic stress (e.g., illness, surgery, fasting) or may experience a more insidious onset with the development of multiorgan complications including vomiting, protein intolerance, failure to thrive, hypotonia, developmental delays or regression, movement disorders, or cardiomyopathy. Isolated cardiomyopathy can be observed on rare occasions in the absence of clinical metabolic decompensation or neurocognitive deficits. Manifestations of neonatal-onset and late-onset PA over time can include growth impairment, intellectual disability, seizures, basal ganglia lesions, pancreatitis, cardiomyopathy, and chronic kidney disease. Other rarely reported complications include optic atrophy, sensorineural hearing loss, and premature ovarian insufficiency.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/75694">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_78692"><div><strong>Deficiency of hydroxymethylglutaryl-CoA lyase</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>78692</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.">C0268601</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">3-Hydroxy-3-methylglutaryl-CoA lyase deficiency (HMGCLD) is a rare autosomal recessive disorder with the cardinal manifestations of metabolic acidosis without ketonuria, hypoglycemia, and a characteristic pattern of elevated urinary organic acid metabolites, including 3-hydroxy-3-methylglutaric, 3-methylglutaric, and 3-hydroxyisovaleric acids. Urinary levels of 3-methylcrotonylglycine may be increased. Dicarboxylic aciduria, hepatomegaly, and hyperammonemia may also be observed. Presenting clinical signs include irritability, lethargy, coma, and vomiting (summary by Gibson et al., 1988).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/78692">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_137954"><div><strong>Congenital microvillous atrophy</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>137954</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.">C0341306</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Diarrhea-2 with microvillus atrophy, with or without cholestasis (DIAR2) is characterized by onset of intractable life-threatening watery diarrhea during infancy. Two forms are recognized: early-onset microvillus inclusion disease (MVID) with diarrhea beginning in the neonatal period, and late-onset, with first symptoms appearing after 3 or 4 months of life. Definite diagnosis is made by transmission electron microscopy demonstrating shortening or absence of apical microvilli with pathognomonic microvillus inclusions in mature enterocytes and peripheral accumulation of periodic acid-Schiff (PAS)-positive granules or vesicles in immature enterocytes (Muller et al., 2008). The natural course of MVID is often fatal, but partial or total weaning from parenteral nutrition has been described.&#13; For a discussion of genetic heterogeneity of diarrhea, see DIAR1 (214700).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/137954">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_87442"><div><strong>Congenital adrenal hypoplasia, X-linked</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>87442</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.">C0342482</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">NR0B1-related adrenal hypoplasia congenita includes both X-linked adrenal hypoplasia congenita (X-linked AHC) and Xp21 deletion (previously called complex glycerol kinase deficiency). X-linked AHC is characterized by primary adrenal insufficiency and/or hypogonadotropic hypogonadism (HH). Adrenal insufficiency is acute infantile onset (average age 3 weeks) in approximately 60% of affected males and childhood onset (ages 1-9 years) in approximately 40%. HH typically manifests in a male with adrenal insufficiency as delayed puberty (i.e., onset age &gt;14 years) and less commonly as arrested puberty at about Tanner Stage 3. Rarely, X-linked AHC manifests initially in early adulthood as delayed-onset adrenal insufficiency, partial HH, and/or infertility. Heterozygous females very occasionally have manifestations of adrenal insufficiency or hypogonadotropic hypogonadism. Xp21 deletion includes deletion of NR0B1 (causing X-linked AHC) and GK (causing glycerol kinase deficiency), and in some cases deletion of DMD (causing Duchenne muscular dystrophy). Developmental delay has been reported in males with Xp21 deletion when the deletion extends proximally to include DMD or when larger deletions extend distally to include IL1RAPL1 and DMD.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/87442">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_87459"><div><strong>Pearson syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>87459</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.">C0342784</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Single large-scale mitochondrial DNA deletion syndromes (SLSMDSs) comprise overlapping clinical phenotypes including Kearns-Sayre syndrome (KSS), KSS spectrum, Pearson syndrome (PS), chronic progressive external ophthalmoplegia (CPEO), and CPEO-plus. KSS is a progressive multisystem disorder with onset before age 20 years characterized by pigmentary retinopathy, CPEO, and cardiac conduction abnormality. Additional features can include cerebellar ataxia, tremor, intellectual disability or cognitive decline, dementia, sensorineural hearing loss, oropharyngeal and esophageal dysfunction, exercise intolerance, muscle weakness, and endocrinopathies. Brain imaging typically shows bilateral lesions in the globus pallidus and white matter. KSS spectrum includes individuals with KSS in addition to individuals with ptosis and/or ophthalmoparesis and at least one of the following: retinopathy, ataxia, cardiac conduction defects, hearing loss, growth deficiency, cognitive impairment, tremor, or cardiomyopathy. Compared to CPEO-plus, individuals with KSS spectrum have more severe muscle involvement (e.g., weakness, atrophy) and overall have a worse prognosis. PS is characterized by pancytopenia (typically transfusion-dependent sideroblastic anemia with variable cell line involvement), exocrine pancreatic dysfunction, poor weight gain, and lactic acidosis. PS manifestations also include renal tubular acidosis, short stature, and elevated liver enzymes. PS may be fatal in infancy due to neutropenia-related infection or refractory metabolic acidosis. CPEO is characterized by ptosis, ophthalmoplegia, oropharyngeal weakness, variable proximal limb weakness, and/or exercise intolerance. CPEO-plus includes CPEO with additional multisystemic involvement including neuropathy, diabetes mellitus, migraines, hypothyroidism, neuropsychiatric manifestations, and optic neuropathy. Rarely, an SLSMDS can manifest as Leigh syndrome, which is characterized as developmental delays, neurodevelopmental regression, lactic acidosis, and bilateral symmetric basal ganglia, brain stem, and/or midbrain lesions on MRI.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/87459">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_90999"><div><strong>Renal carnitine transport defect</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>90999</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.">C0342788</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Primary carnitine deficiency (PCD) is a disorder of the carnitine cycle that results in defective fatty acid oxidation. If untreated, it encompasses a broad clinical spectrum including: (1) metabolic decompensation in infancy typically presenting between age three months and two years with episodes of hypoketotic hypoglycemia, poor feeding, irritability, lethargy, hepatomegaly, elevated liver transaminases, and hyperammonemia triggered by fasting or common illnesses such as upper respiratory tract infection or gastroenteritis; (2) childhood myopathy involving heart and skeletal muscle with onset between age two and four years; (3) pregnancy-related decreased stamina or exacerbation of cardiac arrhythmia; (4) fatigability in adulthood; and (5) absence of symptoms. The latter two categories often include mothers diagnosed with PCD after newborn screening has identified low carnitine levels in their infants.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/90999">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_260623"><div><strong>Autosomal dominant pseudohypoaldosteronism type 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>260623</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.">C1449842</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Autosomal dominant pseudohypoaldosteronism type I (PHA1A) is characterized by salt wasting resulting from renal unresponsiveness to mineralocorticoids. Patients may present with neonatal renal salt wasting with hyperkalaemic acidosis despite high aldosterone levels. These patients improve with age and usually become asymptomatic without treatment. Some adult patients with the disorder may have elevated aldosterone levels, but no history of clinical disease. This observation suggests that only those infants whose salt homeostasis is stressed by intercurrent illness and volume depletion develop clinically recognized PHA I (summary by Geller et al., 1998).&#13; Autosomal recessive pseudohypoaldosteronism type I (see PHA1B1, 264350), caused by mutation in any one of 3 genes encoding the epithelial sodium channel (ENaC), is a similar but more severe systemic disorder with persistence into adulthood.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/260623">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_280689"><div><strong>Deficiency of acetyl-CoA acetyltransferase</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>280689</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.">C1536500</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Alpha-methylacetoacetic aciduria, also known as 3-ketothiolase deficiency, is an inborn error of isoleucine catabolism characterized by urinary excretion of 2-methyl-3-hydroxybutyric acid, 2-methylacetoacetic acid, tiglylglycine, and 2-butanone.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/280689">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_371317"><div><strong>Diabetes mellitus, transient neonatal, 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>371317</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.">C1832386</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">6q24-related transient neonatal diabetes mellitus (6q24-TNDM) is defined as transient neonatal diabetes mellitus caused by genetic aberrations of the imprinted locus at 6q24. The cardinal features are: severe intrauterine growth restriction, hyperglycemia that begins in the neonatal period in a term infant and resolves by age 18 months, dehydration, and absence of ketoacidosis. Macroglossia and umbilical hernia may be present. 6q24-TNDM associated with a multilocus imprinting disturbance (MLID) can be associated with marked hypotonia, congenital heart disease, deafness, neurologic features including epilepsy, and renal malformations. Diabetes mellitus usually starts within the first week of life and lasts on average three months but can last longer than a year. Although insulin is usually required initially, the need for insulin gradually declines over time. Intermittent episodes of hyperglycemia may occur in childhood, particularly during intercurrent illnesses. Diabetes mellitus may recur in adolescence or later in adulthood. Women who have had 6q24-TNDM are at risk for relapse during pregnancy.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/371317">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_372151"><div><strong>Congenital malabsorptive diarrhea 4</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>372151</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.">C1835888</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Congenital malabsorptive diarrhea-4 (DIAR4) is an autosomal recessive disorder characterized by severe intestinal malabsorption and an absence of enteroendocrine cells. Most patients develop insulin-dependent diabetes mellitus in the neonatal period or early childhood. Other features include short stature, hypogonadotropic hypogonadism, and subclinical hypothyroidism with thyroid gland hypoplasia. Pituitary gland hypoplasia with multiple pituitary hormone deficiencies and proximal renal tubulopathy have also been observed (Wejaphikul et al., 2023).&#13; For a discussion of genetic heterogeneity of diarrhea, see DIAR1 (214700).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/372151">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_335399"><div><strong>Bartter disease type 3</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>335399</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.">C1846343</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Bartter syndrome refers to a group of disorders that are unified by autosomal recessive transmission of impaired salt reabsorption in the thick ascending loop of Henle with pronounced salt wasting, hypokalemic metabolic alkalosis, and hypercalciuria. Clinical disease results from defective renal reabsorption of sodium chloride in the thick ascending limb (TAL) of the Henle loop, where 30% of filtered salt is normally reabsorbed (Simon et al., 1997).&#13; Patients with antenatal (or neonatal) forms of Bartter syndrome (e.g., BARTS1, 601678) typically present with premature birth associated with polyhydramnios and low birth weight and may develop life-threatening dehydration in the neonatal period. Patients with classic Bartter syndrome present later in life and may be sporadically asymptomatic or mildly symptomatic (summary by Simon et al., 1996 and Fremont and Chan, 2012).&#13; Genetic Heterogeneity of Bartter Syndrome&#13; Antenatal Bartter syndrome type 1 (601678) is caused by loss-of-function mutations in the butmetanide-sensitive Na-K-2Cl cotransporter NKCC2 (SLC12A1; 600839). Antenatal Bartter syndrome type 2 (241200) is caused by loss-of-function mutations in the ATP-sensitive potassium channel ROMK (KCNJ1; 600359). One form of neonatal Bartter syndrome with sensorineural deafness, Bartter syndrome type 4A (602522), is caused by mutation in the BSND gene (606412). Another form of neonatal Bartter syndrome with sensorineural deafness, Bartter syndrome type 4B (613090), is caused by simultaneous mutation in both the CLCNKA (602024) and CLCNKB (602023) genes.&#13; Also see autosomal dominant hypocalcemia-1 with Bartter syndrome (601198), which is sometimes referred to as Bartter syndrome type 5 (Fremont and Chan, 2012), caused by mutation in the CASR gene (601199).&#13; See Gitelman syndrome (GTLMN; 263800), which is often referred to as a mild variant of Bartter syndrome, caused by mutation in the thiazide-sensitive sodium-chloride cotransporter SLC12A3 (600968).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/335399">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_338045"><div><strong>Mitochondrial DNA depletion syndrome 6 (hepatocerebral type)</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>338045</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.">C1850406</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">MPV17-related mitochondrial DNA (mtDNA) maintenance defect presents in the vast majority of affected individuals as an early-onset encephalohepatopathic (hepatocerebral) disease that is typically associated with mtDNA depletion, particularly in the liver. A later-onset neuromyopathic disease characterized by myopathy and neuropathy, and associated with multiple mtDNA deletions in muscle, has also rarely been described. MPV17-related mtDNA maintenance defect, encephalohepatopathic form is characterized by: Hepatic manifestations (liver dysfunction that typically progresses to liver failure, cholestasis, hepatomegaly, and steatosis); Neurologic involvement (developmental delay, hypotonia, microcephaly, and motor and sensory peripheral neuropathy); Gastrointestinal manifestations (gastrointestinal dysmotility, feeding difficulties, and failure to thrive); and Metabolic derangements (lactic acidosis and hypoglycemia). Less frequent manifestations include renal tubulopathy, nephrocalcinosis, and hypoparathyroidism. Progressive liver disease often leads to death in infancy or early childhood. Hepatocellular carcinoma has been reported.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/338045">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_344419"><div><strong>Methylmalonic acidemia due to methylmalonyl-CoA epimerase deficiency</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>344419</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.">C1855100</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">For this GeneReview, the term "isolated methylmalonic acidemia" refers to a group of inborn errors of metabolism associated with elevated methylmalonic acid (MMA) concentration in the blood and urine that result from the failure to isomerize (convert) methylmalonyl-coenzyme A (CoA) into succinyl-CoA during propionyl-CoA metabolism in the mitochondrial matrix, without hyperhomocysteinemia or homocystinuria, hypomethioninemia, or variations in other metabolites, such as malonic acid. Isolated MMA is caused by complete or partial deficiency of the enzyme methylmalonyl-CoA mutase (mut0 enzymatic subtype or mut enzymatic subtype, respectively), a defect in the transport or synthesis of its cofactor, 5-deoxy-adenosyl-cobalamin (cblA, cblB, or cblD-MMA), or deficiency of the enzyme methylmalonyl-CoA epimerase. Prior to the advent of newborn screening, common phenotypes included: Infantile/non-B12-responsive form (mut0 enzymatic subtype, cblB), the most common phenotype, associated with infantile-onset lethargy, tachypnea, hypothermia, vomiting, and dehydration on initiation of protein-containing feeds. Without appropriate treatment, the infantile/non-B12-responsive phenotype could rapidly progress to coma due to hyperammonemic encephalopathy. Partially deficient or B12-responsive phenotypes (mut enzymatic subtype, cblA, cblB [rare], cblD-MMA), in which symptoms occur in the first few months or years of life and are characterized by feeding problems, failure to thrive, hypotonia, and developmental delay marked by episodes of metabolic decompensation. Methylmalonyl-CoA epimerase deficiency, in which findings range from complete absence of symptoms to severe metabolic acidosis. Affected individuals can also develop ataxia, dysarthria, hypotonia, mild spastic paraparesis, and seizures. In those individuals diagnosed by newborn screening and treated from an early age, there appears to be decreased early mortality, less severe symptoms at diagnosis, favorable short-term neurodevelopmental outcome, and lower incidence of movement disorders and irreversible cerebral damage. However, secondary complications may still occur and can include intellectual disability, tubulointerstitial nephritis with progressive impairment of renal function, "metabolic stroke" (bilateral lacunar infarction of the basal ganglia during acute metabolic decompensation), pancreatitis, growth failure, functional immune impairment, bone marrow failure, optic nerve atrophy, arrhythmias and/or cardiomyopathy (dilated or hypertrophic), liver steatosis/fibrosis/cancer, and renal cancer.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/344419">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_344420"><div><strong>Methylmalonic aciduria, cblB type</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>344420</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.">C1855102</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">For this GeneReview, the term "isolated methylmalonic acidemia" refers to a group of inborn errors of metabolism associated with elevated methylmalonic acid (MMA) concentration in the blood and urine that result from the failure to isomerize (convert) methylmalonyl-coenzyme A (CoA) into succinyl-CoA during propionyl-CoA metabolism in the mitochondrial matrix, without hyperhomocysteinemia or homocystinuria, hypomethioninemia, or variations in other metabolites, such as malonic acid. Isolated MMA is caused by complete or partial deficiency of the enzyme methylmalonyl-CoA mutase (mut0 enzymatic subtype or mut enzymatic subtype, respectively), a defect in the transport or synthesis of its cofactor, 5-deoxy-adenosyl-cobalamin (cblA, cblB, or cblD-MMA), or deficiency of the enzyme methylmalonyl-CoA epimerase. Prior to the advent of newborn screening, common phenotypes included: Infantile/non-B12-responsive form (mut0 enzymatic subtype, cblB), the most common phenotype, associated with infantile-onset lethargy, tachypnea, hypothermia, vomiting, and dehydration on initiation of protein-containing feeds. Without appropriate treatment, the infantile/non-B12-responsive phenotype could rapidly progress to coma due to hyperammonemic encephalopathy. Partially deficient or B12-responsive phenotypes (mut enzymatic subtype, cblA, cblB [rare], cblD-MMA), in which symptoms occur in the first few months or years of life and are characterized by feeding problems, failure to thrive, hypotonia, and developmental delay marked by episodes of metabolic decompensation. Methylmalonyl-CoA epimerase deficiency, in which findings range from complete absence of symptoms to severe metabolic acidosis. Affected individuals can also develop ataxia, dysarthria, hypotonia, mild spastic paraparesis, and seizures. In those individuals diagnosed by newborn screening and treated from an early age, there appears to be decreased early mortality, less severe symptoms at diagnosis, favorable short-term neurodevelopmental outcome, and lower incidence of movement disorders and irreversible cerebral damage. However, secondary complications may still occur and can include intellectual disability, tubulointerstitial nephritis with progressive impairment of renal function, "metabolic stroke" (bilateral lacunar infarction of the basal ganglia during acute metabolic decompensation), pancreatitis, growth failure, functional immune impairment, bone marrow failure, optic nerve atrophy, arrhythmias and/or cardiomyopathy (dilated or hypertrophic), liver steatosis/fibrosis/cancer, and renal cancer.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/344420">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_344422"><div><strong>Methylmalonic aciduria, cblA type</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>344422</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.">C1855109</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">For this GeneReview, the term "isolated methylmalonic acidemia" refers to a group of inborn errors of metabolism associated with elevated methylmalonic acid (MMA) concentration in the blood and urine that result from the failure to isomerize (convert) methylmalonyl-coenzyme A (CoA) into succinyl-CoA during propionyl-CoA metabolism in the mitochondrial matrix, without hyperhomocysteinemia or homocystinuria, hypomethioninemia, or variations in other metabolites, such as malonic acid. Isolated MMA is caused by complete or partial deficiency of the enzyme methylmalonyl-CoA mutase (mut0 enzymatic subtype or mut enzymatic subtype, respectively), a defect in the transport or synthesis of its cofactor, 5-deoxy-adenosyl-cobalamin (cblA, cblB, or cblD-MMA), or deficiency of the enzyme methylmalonyl-CoA epimerase. Prior to the advent of newborn screening, common phenotypes included: Infantile/non-B12-responsive form (mut0 enzymatic subtype, cblB), the most common phenotype, associated with infantile-onset lethargy, tachypnea, hypothermia, vomiting, and dehydration on initiation of protein-containing feeds. Without appropriate treatment, the infantile/non-B12-responsive phenotype could rapidly progress to coma due to hyperammonemic encephalopathy. Partially deficient or B12-responsive phenotypes (mut enzymatic subtype, cblA, cblB [rare], cblD-MMA), in which symptoms occur in the first few months or years of life and are characterized by feeding problems, failure to thrive, hypotonia, and developmental delay marked by episodes of metabolic decompensation. Methylmalonyl-CoA epimerase deficiency, in which findings range from complete absence of symptoms to severe metabolic acidosis. Affected individuals can also develop ataxia, dysarthria, hypotonia, mild spastic paraparesis, and seizures. In those individuals diagnosed by newborn screening and treated from an early age, there appears to be decreased early mortality, less severe symptoms at diagnosis, favorable short-term neurodevelopmental outcome, and lower incidence of movement disorders and irreversible cerebral damage. However, secondary complications may still occur and can include intellectual disability, tubulointerstitial nephritis with progressive impairment of renal function, "metabolic stroke" (bilateral lacunar infarction of the basal ganglia during acute metabolic decompensation), pancreatitis, growth failure, functional immune impairment, bone marrow failure, optic nerve atrophy, arrhythmias and/or cardiomyopathy (dilated or hypertrophic), liver steatosis/fibrosis/cancer, and renal cancer.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/344422">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_344424"><div><strong>Methylmalonic aciduria due to methylmalonyl-CoA mutase deficiency</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>344424</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.">C1855114</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">For this GeneReview, the term "isolated methylmalonic acidemia" refers to a group of inborn errors of metabolism associated with elevated methylmalonic acid (MMA) concentration in the blood and urine that result from the failure to isomerize (convert) methylmalonyl-coenzyme A (CoA) into succinyl-CoA during propionyl-CoA metabolism in the mitochondrial matrix, without hyperhomocysteinemia or homocystinuria, hypomethioninemia, or variations in other metabolites, such as malonic acid. Isolated MMA is caused by complete or partial deficiency of the enzyme methylmalonyl-CoA mutase (mut0 enzymatic subtype or mut enzymatic subtype, respectively), a defect in the transport or synthesis of its cofactor, 5-deoxy-adenosyl-cobalamin (cblA, cblB, or cblD-MMA), or deficiency of the enzyme methylmalonyl-CoA epimerase. Prior to the advent of newborn screening, common phenotypes included: Infantile/non-B12-responsive form (mut0 enzymatic subtype, cblB), the most common phenotype, associated with infantile-onset lethargy, tachypnea, hypothermia, vomiting, and dehydration on initiation of protein-containing feeds. Without appropriate treatment, the infantile/non-B12-responsive phenotype could rapidly progress to coma due to hyperammonemic encephalopathy. Partially deficient or B12-responsive phenotypes (mut enzymatic subtype, cblA, cblB [rare], cblD-MMA), in which symptoms occur in the first few months or years of life and are characterized by feeding problems, failure to thrive, hypotonia, and developmental delay marked by episodes of metabolic decompensation. Methylmalonyl-CoA epimerase deficiency, in which findings range from complete absence of symptoms to severe metabolic acidosis. Affected individuals can also develop ataxia, dysarthria, hypotonia, mild spastic paraparesis, and seizures. In those individuals diagnosed by newborn screening and treated from an early age, there appears to be decreased early mortality, less severe symptoms at diagnosis, favorable short-term neurodevelopmental outcome, and lower incidence of movement disorders and irreversible cerebral damage. However, secondary complications may still occur and can include intellectual disability, tubulointerstitial nephritis with progressive impairment of renal function, "metabolic stroke" (bilateral lacunar infarction of the basal ganglia during acute metabolic decompensation), pancreatitis, growth failure, functional immune impairment, bone marrow failure, optic nerve atrophy, arrhythmias and/or cardiomyopathy (dilated or hypertrophic), liver steatosis/fibrosis/cancer, and renal cancer.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/344424">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_343428"><div><strong>Bartter disease type 2</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>343428</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.">C1855849</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Bartter syndrome refers to a group of disorders that are unified by autosomal recessive transmission of impaired salt reabsorption in the thick ascending loop of Henle with pronounced salt wasting, hypokalemic metabolic alkalosis, and hypercalciuria. Clinical disease results from defective renal reabsorption of sodium chloride in the thick ascending limb (TAL) of the Henle loop, where 30% of filtered salt is normally reabsorbed (Simon et al., 1997).&#13; Patients with antenatal forms of Bartter syndrome typically present with premature birth associated with polyhydramnios and low birth weight and may develop life-threatening dehydration in the neonatal period. Patients with classic Bartter syndrome (see BARTS3, 607364) present later in life and may be sporadically asymptomatic or mildly symptomatic (summary by Simon et al., 1996 and Fremont and Chan, 2012).&#13; For a discussion of genetic heterogeneity of Bartter syndrome, see 607364.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/343428">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_347219"><div><strong>Arthrogryposis, renal dysfunction, and cholestasis 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>347219</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.">C1859722</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Arthrogryposis, renal dysfunction, and cholestasis-1 (ARCS1) is characterized by congenital joint contractures, renal tubular dysfunction, cholestasis with low GGT (612346) activity, severe failure to thrive, ichthyosis, and a defect in platelet alpha-granule biogenesis. Most patients with ARC do not survive past the first year of life (Gissen et al., 2006; Smith et al., 2012).&#13; Another form of arthrogryposis, renal dysfunction, and cholestasis, ARCS2 (613404), is caused by mutation in the VIPAR gene on chromosome 14q24 (613401).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/347219">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_356367"><div><strong>Medium chain 3-ketoacyl-Coa thiolase deficiency</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>356367</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.">C1865781</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/356367">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_355727"><div><strong>Bartter disease type 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>355727</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.">C1866495</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Bartter syndrome refers to a group of disorders that are unified by autosomal recessive transmission of impaired salt reabsorption in the thick ascending loop of Henle with pronounced salt wasting, hypokalemic metabolic alkalosis, and hypercalciuria. Clinical disease results from defective renal reabsorption of sodium chloride in the thick ascending limb (TAL) of the Henle loop, where 30% of filtered salt is normally reabsorbed (Simon et al., 1997).&#13; Patients with antenatal forms of Bartter syndrome typically present with premature birth associated with polyhydramnios and low birth weight and may develop life-threatening dehydration in the neonatal period. Patients with classic Bartter syndrome (see BARTS3, 607364) present later in life and may be sporadically asymptomatic or mildly symptomatic (summary by Simon et al., 1996 and Fremont and Chan, 2012).&#13; For a discussion of genetic heterogeneity of Bartter syndrome, see 607364.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/355727">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_419735"><div><strong>Nephropathic cystinosis</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>419735</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.">C2931187</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Cystinosis comprises three allelic phenotypes: Nephropathic cystinosis in untreated children is characterized by renal Fanconi syndrome, poor growth, hypophosphatemic/calcipenic rickets, impaired glomerular function resulting in complete glomerular failure, and accumulation of cystine in almost all cells, leading to cellular dysfunction with tissue and organ impairment. The typical untreated child has short stature, rickets, and photophobia. Failure to thrive is generally noticed after approximately age six months; signs of renal tubular Fanconi syndrome (polyuria, polydipsia, dehydration, and acidosis) appear as early as age six months; corneal crystals can be present before age one year and are always present after age 16 months. Prior to the use of renal transplantation and cystine-depleting therapy, the life span in nephropathic cystinosis was no longer than ten years. With these interventions, affected individuals can survive at least into the mid-forties or fifties with satisfactory quality of life. Intermediate cystinosis is characterized by all the typical manifestations of nephropathic cystinosis, but onset is at a later age. Renal glomerular failure occurs in all untreated affected individuals, usually between ages 15 and 25 years. The non-nephropathic (ocular) form of cystinosis is characterized clinically only by photophobia resulting from corneal cystine crystal accumulation.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/419735">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_463309"><div><strong>Proximal tubulopathy-diabetes mellitus-cerebellar ataxia syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>463309</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.">C3151959</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Proximal tubulopathy-diabetes mellitus-cerebellar ataxia syndrome is characterized by onset of proximal tubulopathy in the first year of life, followed by progressive development during childhood of skin anomalies (erythrocyanosis and abnormal pigmentation), blindness, osteoporosis, cerebellar ataxia, mitochondrial myopathy, deafness and diabetes mellitus.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/463309">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_481944"><div><strong>Combined malonic and methylmalonic acidemia</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>481944</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.">C3280314</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Combined malonic and methylmalonic aciduria (CMAMMA) is a rare recessive inborn error of metabolism characterized by elevations of urine malonic acid (MA) and methylmalonic acid (MMA). MMA excretion is higher than MA in CMAMMA patients, unlike patients with malonyl-CoA decarboxylase deficiency (248360) in whom the biochemical abnormalities include elevated MA alone or combined elevations of MA and MMA with MA mainly being higher than MMA. The clinical significance of CMAMMA is controversial. Initially, CMAMMA patients were ascertained during investigation of children with symptoms suggestive of a metabolic disorder or adults with neurologic manifestations (Sloan et al., 2011). Levtova et al. (2019) described CMAMMA patients identified by neonatal screening who had a favorable clinical course.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/481944">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_483046"><div><strong>Corticosterone methyloxidase type 2 deficiency</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>483046</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.">C3463917</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">CMO type II deficiency is an autosomal recessive disorder caused by a defect in the final biochemical step of aldosterone biosynthesis, the 18-hydroxylation of 18-hydroxycorticosterone (18-OHB) to aldosterone. This enzymatic defect results in decreased aldosterone and salt-wasting associated with an increased serum ratio of 18-OHB to aldosterone. In CMO II deficiency, aldosterone can be low or normal, but at the expense of increased secretion of 18-OHB. These patients have a low ratio of corticosterone to 18-OHB (Portrat-Doyen et al., 1998).&#13; The CYP11B2 gene product also catalyzes an earlier step in aldosterone biosynthesis: the 18-hydroxylation of corticosterone to 18-OHB. A defect in that enzymatic step results in CMO type I deficiency (204300), an allelic disorder with an overlapping phenotype but distinct biochemical features. In CMO I deficiency, aldosterone is undetectable, whereas its immediate precursor, 18-OHB, is low or normal (Portrat-Doyen et al., 1998).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/483046">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_815883"><div><strong>Mitochondrial complex III deficiency nuclear type 6</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>815883</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.">C3809553</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Mitochondrial complex III deficiency nuclear type 6 (MC3DN6) is an autosomal recessive disorder caused by mitochondrial dysfunction. It is characterized by onset in early childhood of episodic acute lactic acidosis, ketoacidosis, and insulin-responsive hyperglycemia, usually associated with infection. Laboratory studies show decreased activity of mitochondrial complex III. Psychomotor development is normal (summary by Gaignard et al., 2013).&#13; For a discussion of genetic heterogeneity of mitochondrial complex III deficiency, see MC3DN1 (124000).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/815883">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_863567"><div><strong>Inflammatory skin and bowel disease, neonatal, 2</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>863567</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.">C4015130</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Neonatal nephrocutaneous inflammatory syndrome (NNCIS) is an autosomal recessive disorder characterized by intrauterine growth retardation and premature birth, fragile infection-prone skin, and nephromegaly with tubular dysfunction. Some patients have chronic diarrhea, and necrotizing enterocolitis with intestinal perforation has been observed. Other features include facial dysmorphisms and cardiac anomalies. Most patients require ventilatory and circulatory support at birth, exhibit failure to thrive, experience recurrent infections with sepsis as a common complication, and die within 6 months (Mazurova et al., 2020; Labbouz et al., 2023).&#13; Reviews&#13; Takeichi and Akiyama (2021) reviewed published reports of patients with mutation in the EGFR gene, whose features included intrauterine growth restriction; thin, translucent, and fragile skin (14 of 15 cases); skin desquamation (10 of 17 cases); ichthyosis (9 of 17 cases); recurrent skin infections and sepsis (9 of 12 cases); nephromegaly (10 of 16 cases); and congenital heart defects (7 of 17 cases). Other observed features included erythroderma, tubulopathy, necrotizing enterocolitis/intestinal perforation, cryptorchidism, hyperimmunoglobulin E, and dentinogenesis imperfecta. Almost all children died within 2.5 years after birth. The authors suggested that EGFR-associated systemic inflammatory diseases should be considered a part of the clinical spectrum of 'autoinflammatory keratinization diseases' (AiKDs).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/863567">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_934200"><div><strong>Hypercalcemia, infantile, 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>934200</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.">C4310232</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Infantile hypercalcemia is characterized by severe hypercalcemia, failure to thrive, vomiting, dehydration, and nephrocalcinosis. An epidemic of idiopathic infantile hypercalcemia occurred in the United Kingdom in the 1950s after the implementation of an increased prophylactic dose of vitamin D supplementation; however, the fact that most infants receiving the prophylaxis remained unaffected suggested that an intrinsic hypersensitivity to vitamin D might be implicated in the pathogenesis (summary by Schlingmann et al., 2011).&#13; Genetic Heterogeneity&#13; Infantile hypercalcemia-2 (HCINF2; 616963) is caused by mutation in the SLC34A1 gene (182309) on chromosome 5q35.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/934200">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1621793"><div><strong>Polycystic kidney disease 4</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1621793</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.">C4540575</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Autosomal recessive polycystic kidney disease PKHD1 (ARPKD-PKHD1) is characterized by primary involvement of the kidneys and liver with mostly secondary effects seen in other organ systems. Of the three ages of initial presentation of kidney disease, the two most common are perinatal (i.e., prenatal/neonatal) and infantile (four weeks to age one year) with the classic finding of enlarged kidneys. The major difference between the perinatal and infantile presentations, which typically have similar kidney and liver findings, is the frequent occurrence of pulmonary involvement in the perinatal presentation, which is a major cause of morbidity and mortality in neonates. The less common initial presentation in childhood (after age one year) to young adulthood can be associated with predominant hepatobiliary manifestations characterized by the clinical consequences of developmental anomalies of biliary ductal plate remodeling (also known as Caroli disease). Although the short-term and long-term mortality rates of ARPKD remain significant, the survival of individuals with ARPKD has improved with modern neonatal respiratory support, kidney replacement therapy (KRT) including dialysis and kidney transplantation (KTx), and liver transplantation (LTx) or combined liver and kidney transplantation (CLKTx).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1621793">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1732975"><div><strong>Renal tubular acidosis, distal, 3, with or without sensorineural hearing loss</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1732975</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.">C5399980</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Individuals with hereditary distal renal tubular acidosis (dRTA) typically present in infancy with failure to thrive, although later presentations can occur, especially in individuals with autosomal dominant SLC4A1-dRTA. Initial clinical manifestations can also include emesis, polyuria, polydipsia, constipation, diarrhea, decreased appetite, and episodes of dehydration. Electrolyte manifestations include hyperchloremic non-anion gap metabolic acidosis and hypokalemia. Renal complications of dRTA include nephrocalcinosis, nephrolithiasis, medullary cysts, and impaired renal function. Additional manifestations include bone demineralization (rickets, osteomalacia), growth deficiency, sensorineural hearing loss (in ATP6V0A4-, ATP6V1B1-, and FOXI1-dRTA), and hereditary hemolytic anemia (in some individuals with SLC4A1-dRTA).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1732975">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1775535"><div><strong>Combined oxidative phosphorylation deficiency 47</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1775535</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.">C5436476</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/1775535">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1784105"><div><strong>Congenital short bowel syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1784105</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.">C5441717</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">A rare intestinal disorder of neonates of unknown etiology. Patients are born with a short small bowel (less than 75 cm in length) that compromises proper intestinal absorption and leads chronic diarrhea, vomiting and failure to thrive.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1784105">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1785846"><div><strong>Osteootohepatoenteric syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1785846</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.">C5543557</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Osteootohepatoenteric syndrome (OOHE) is characterized by a variable combination of bone fragility, hearing loss, cholestasis, and congenital diarrhea. Some patients also display mild developmental delay and intellectual disability (Esteve et al., 2018).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1785846">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1810214"><div><strong>3-methylglutaconic aciduria, type VIIB</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1810214</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.">C5676893</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">CLPB (caseinolytic peptidase B) deficiency is characterized by neurologic involvement and neutropenia, which can range from severe to mild. In severe CLPB deficiency, death usually occurs at a few months of age due to significant neonatal neurologic involvement (hyperekplexia or absence of voluntary movements, hypotonia or hypertonia, swallowing problems, respiratory insufficiency, and epilepsy) and severe neutropenia associated with life-threatening infections. Individuals with moderate CLPB deficiency present with neurologic abnormalities in infancy including hypotonia and feeding problems, and develop spasticity, a progressive movement disorder (ataxia, dystonia, and/or dyskinesia), epilepsy, and intellectual disability. Neutropenia is variable, but not life threatening. In those with mild CLPB deficiency there is no neurologic involvement, intellect is normal, neutropenia is mild and intermittent, and life expectancy is normal.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1810214">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1823950"><div><strong>Pseudohypoaldosteronism, type IB1, autosomal recessive</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1823950</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.">C5774176</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Autosomal recessive pseudohypoaldosteronism type I, including PHA1B1, is characterized by renal salt wasting and high concentrations of sodium in sweat, stool, and saliva. The disorder involves multiple organ systems and is especially threatening in the neonatal period. Laboratory evaluation shows hyponatremia, hyperkalemia, and increased plasma renin activity with high serum aldosterone concentrations. Respiratory tract infections are common in affected children and may be mistaken for cystic fibrosis (CF; 219700). Aggressive salt replacement and control of hyperkalemia results in survival, and the disorder appears to become less severe with age (review by Scheinman et al., 1999).&#13; A milder, autosomal dominant form of type I pseudohypoaldosteronism (PHA1A; 177735) is caused by mutations in the mineralocorticoid receptor gene (MCR, NR3C2; 600983).&#13; Gitelman syndrome (263800), another example of primary renal tubular salt wasting, is due to mutation in the thiazide-sensitive sodium-chloride cotransporter (SLC12A3; 600968).&#13; Hanukoglu and Hanukoglu (2016) provided a detailed review of the ENaC gene family, including structure, function, tissue distribution, and associated inherited diseases.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1823950">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1824028"><div><strong>Pseudohypoaldosteronism, type IB2, autosomal recessive</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1824028</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.">C5774255</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Autosomal recessive pseudohypoaldosteronism type IB2 (PHA1B2) is characterized by renal salt wasting and high concentrations of sodium in sweat, stool, and saliva. The disorder involves multiple organ systems and is especially threatening in the neonatal period. Laboratory evaluation shows hyponatremia, hyperkalemia, and increased plasma renin activity with high serum aldosterone concentrations. Respiratory tract infections are common in affected children and may be mistaken for cystic fibrosis (CF; 219700). Aggressive salt replacement and control of hyperkalemia results in survival, and the disorder appears to become less severe with age (review by Scheinman et al., 1999).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1824028">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1824029"><div><strong>Pseudohypoaldosteronism, type IB3, autosomal recessive</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1824029</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.">C5774256</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Autosomal recessive pseudohypoaldosteronism type IB3 (PHA1B3) is characterized by renal salt wasting and high concentrations of sodium in sweat, stool, and saliva. The disorder involves multiple organ systems and is especially threatening in the neonatal period. Laboratory evaluation shows hyponatremia, hyperkalemia, and increased plasma renin activity with high serum aldosterone concentrations. Respiratory tract infections are common in affected children and may be mistaken for cystic fibrosis (CF; 219700). Aggressive salt replacement and control of hyperkalemia results in survival, and the disorder appears to become less severe with age (review by Scheinman et al., 1999).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1824029">Condition Record</a></div></div>
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<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/35306388">ESPEN practical guideline: Clinical nutrition and hydration in geriatrics.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Volkert D,
Beck AM,
Cederholm T,
Cruz-Jentoft A,
Hooper L,
Kiesswetter E,
Maggio M,
Raynaud-Simon A,
Sieber C,
Sobotka L,
van Asselt D,
Wirth R,
Bischoff SC</span><br />
<span class="medgenPMjournal">Clin Nutr</span>
2022 Apr;41(4):958-989.
Epub 2022 Mar 5
doi: 10.1016/j.clnu.2022.01.024.
<span class="bold">PMID: </span><a href="/pubmed/35306388" target="_blank">35306388</a></div>
<div class="nl"><a target="_blank" href="/pubmed/30005900">ESPEN guideline on clinical nutrition and hydration in geriatrics.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Volkert D,
Beck AM,
Cederholm T,
Cruz-Jentoft A,
Goisser S,
Hooper L,
Kiesswetter E,
Maggio M,
Raynaud-Simon A,
Sieber CC,
Sobotka L,
van Asselt D,
Wirth R,
Bischoff SC</span><br />
<span class="medgenPMjournal">Clin Nutr</span>
2019 Feb;38(1):10-47.
Epub 2018 Jun 18
doi: 10.1016/j.clnu.2018.05.024.
<span class="bold">PMID: </span><a href="/pubmed/30005900" target="_blank">30005900</a></div>
<div class="nl"><a target="_blank" href="/pubmed/26133303">Dehydration: Isonatremic, Hyponatremic, and Hypernatremic Recognition and Management.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Powers KS</span><br />
<span class="medgenPMjournal">Pediatr Rev</span>
2015 Jul;36(7):274-83; quiz 284-5.
doi: 10.1542/pir.36-7-274.
<span class="bold">PMID: </span><a href="/pubmed/26133303" target="_blank">26133303</a></div>
<div><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=(%22dehydration%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 (792)</a></div></div>
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<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
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<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/35839362">Acute Diarrhea in Adults.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Meisenheimer ES MD, MBA,
Epstein C DO,
Thiel D MD, MPH</span><br />
<span class="medgenPMjournal">Am Fam Physician</span>
2022 Jul;106(1):72-80.
<span class="bold">PMID: </span><a href="/pubmed/35839362" target="_blank">35839362</a></div>
<div class="nl"><a target="_blank" href="/pubmed/33803421">Rehydration during Endurance Exercise: Challenges, Research, Options, Methods.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Armstrong LE</span><br />
<span class="medgenPMjournal">Nutrients</span>
2021 Mar 9;13(3)
doi: 10.3390/nu13030887.
<span class="bold">PMID: </span><a href="/pubmed/33803421" target="_blank">33803421</a><a href="/pmc/articles/PMC8001428" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div class="nl"><a target="_blank" href="/pubmed/30730620">Drug-induced diarrhoea.</a></div>
<div class="portlet_content ln"><span class="medgenPMjournal">Prescrire Int</span>
2017 Mar;26(180):67-71.
<span class="bold">PMID: </span><a href="/pubmed/30730620" target="_blank">30730620</a></div>
<div class="nl"><a target="_blank" href="/pubmed/24333321">Water-loss dehydration and aging.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Hooper L,
Bunn D,
Jimoh FO,
Fairweather-Tait SJ</span><br />
<span class="medgenPMjournal">Mech Ageing Dev</span>
2014 Mar-Apr;136-137:50-8.
Epub 2013 Dec 9
doi: 10.1016/j.mad.2013.11.009.
<span class="bold">PMID: </span><a href="/pubmed/24333321" target="_blank">24333321</a></div>
<div class="nl"><a target="_blank" href="/pubmed/22855911">Cognitive performance and dehydration.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Adan A</span><br />
<span class="medgenPMjournal">J Am Coll Nutr</span>
2012 Apr;31(2):71-8.
doi: 10.1080/07315724.2012.10720011.
<span class="bold">PMID: </span><a href="/pubmed/22855911" target="_blank">22855911</a></div>
<div><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=%22Dehydration%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 (6293)</a></div><h3 class="subhead">Diagnosis</h3>
<div class="nl"><a target="_blank" href="/pubmed/35839362">Acute Diarrhea in Adults.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Meisenheimer ES MD, MBA,
Epstein C DO,
Thiel D MD, MPH</span><br />
<span class="medgenPMjournal">Am Fam Physician</span>
2022 Jul;106(1):72-80.
<span class="bold">PMID: </span><a href="/pubmed/35839362" target="_blank">35839362</a></div>
<div class="nl"><a target="_blank" href="/pubmed/30702253">Gastroenteritis in Children.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Hartman S,
Brown E,
Loomis E,
Russell HA</span><br />
<span class="medgenPMjournal">Am Fam Physician</span>
2019 Feb 1;99(3):159-165.
<span class="bold">PMID: </span><a href="/pubmed/30702253" target="_blank">30702253</a></div>
<div class="nl"><a target="_blank" href="/pubmed/29622321">Evaluation and Management of Dehydration in Children.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Santillanes G,
Rose E</span><br />
<span class="medgenPMjournal">Emerg Med Clin North Am</span>
2018 May;36(2):259-273.
Epub 2018 Feb 10
doi: 10.1016/j.emc.2017.12.004.
<span class="bold">PMID: </span><a href="/pubmed/29622321" target="_blank">29622321</a></div>
<div class="nl"><a target="_blank" href="/pubmed/26133303">Dehydration: Isonatremic, Hyponatremic, and Hypernatremic Recognition and Management.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Powers KS</span><br />
<span class="medgenPMjournal">Pediatr Rev</span>
2015 Jul;36(7):274-83; quiz 284-5.
doi: 10.1542/pir.36-7-274.
<span class="bold">PMID: </span><a href="/pubmed/26133303" target="_blank">26133303</a></div>
<div class="nl"><a target="_blank" href="/pubmed/24692140">Dehydration: physiology, assessment, and performance effects.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Cheuvront SN,
Kenefick RW</span><br />
<span class="medgenPMjournal">Compr Physiol</span>
2014 Jan;4(1):257-85.
doi: 10.1002/cphy.c130017.
<span class="bold">PMID: </span><a href="/pubmed/24692140" target="_blank">24692140</a></div>
<div><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=%22Dehydration%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 (4540)</a></div><h3 class="subhead">Therapy</h3>
<div class="nl"><a target="_blank" href="/pubmed/30073665">Colloids versus crystalloids for fluid resuscitation in critically ill people.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Lewis SR,
Pritchard MW,
Evans DJ,
Butler AR,
Alderson P,
Smith AF,
Roberts I</span><br />
<span class="medgenPMjournal">Cochrane Database Syst Rev</span>
2018 Aug 3;8(8):CD000567.
doi: 10.1002/14651858.CD000567.pub7.
<span class="bold">PMID: </span><a href="/pubmed/30073665" target="_blank">30073665</a><a href="/pmc/articles/PMC6513027" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div class="nl"><a target="_blank" href="/pubmed/27863994">Understanding the Physics of Functional Fibers in the Gastrointestinal Tract: An Evidence-Based Approach to Resolving Enduring Misconceptions about Insoluble and Soluble Fiber.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">McRorie JW Jr,
McKeown NM</span><br />
<span class="medgenPMjournal">J Acad Nutr Diet</span>
2017 Feb;117(2):251-264.
Epub 2016 Nov 15
doi: 10.1016/j.jand.2016.09.021.
<span class="bold">PMID: </span><a href="/pubmed/27863994" target="_blank">27863994</a></div>
<div class="nl"><a target="_blank" href="/pubmed/26966356">Oropharyngeal dysphagia in older persons - from pathophysiology to adequate intervention: a review and summary of an international expert meeting.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Wirth R,
Dziewas R,
Beck AM,
Clavé P,
Hamdy S,
Heppner HJ,
Langmore S,
Leischker AH,
Martino R,
Pluschinski P,
Rösler A,
Shaker R,
Warnecke T,
Sieber CC,
Volkert D</span><br />
<span class="medgenPMjournal">Clin Interv Aging</span>
2016;11:189-208.
Epub 2016 Feb 23
doi: 10.2147/CIA.S97481.
<span class="bold">PMID: </span><a href="/pubmed/26966356" target="_blank">26966356</a><a href="/pmc/articles/PMC4770066" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div class="nl"><a target="_blank" href="/pubmed/24333321">Water-loss dehydration and aging.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Hooper L,
Bunn D,
Jimoh FO,
Fairweather-Tait SJ</span><br />
<span class="medgenPMjournal">Mech Ageing Dev</span>
2014 Mar-Apr;136-137:50-8.
Epub 2013 Dec 9
doi: 10.1016/j.mad.2013.11.009.
<span class="bold">PMID: </span><a href="/pubmed/24333321" target="_blank">24333321</a></div>
<div class="nl"><a target="_blank" href="/pubmed/11252673">Rotavirus infections.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Katyal R,
Rana SV,
Singh K</span><br />
<span class="medgenPMjournal">Acta Virol</span>
2000 Oct;44(5):283-8.
<span class="bold">PMID: </span><a href="/pubmed/11252673" target="_blank">11252673</a></div>
<div><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=%22Dehydration%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 (5795)</a></div><h3 class="subhead">Prognosis</h3>
<div class="nl"><a target="_blank" href="/pubmed/32589532">Anorexia nervosa in adolescents.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Neale J,
Hudson LD</span><br />
<span class="medgenPMjournal">Br J Hosp Med (Lond)</span>
2020 Jun 2;81(6):1-8.
Epub 2020 Jun 1
doi: 10.12968/hmed.2020.0099.
<span class="bold">PMID: </span><a href="/pubmed/32589532" target="_blank">32589532</a></div>
<div class="nl"><a target="_blank" href="/pubmed/29426991">Post-contrast acute kidney injury - Part 1: Definition, clinical features, incidence, role of contrast medium and risk factors : Recommendations for updated ESUR Contrast Medium Safety Committee guidelines.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">van der Molen AJ,
Reimer P,
Dekkers IA,
Bongartz G,
Bellin MF,
Bertolotto M,
Clement O,
Heinz-Peer G,
Stacul F,
Webb JAW,
Thomsen HS</span><br />
<span class="medgenPMjournal">Eur Radiol</span>
2018 Jul;28(7):2845-2855.
Epub 2018 Feb 9
doi: 10.1007/s00330-017-5246-5.
<span class="bold">PMID: </span><a href="/pubmed/29426991" target="_blank">29426991</a><a href="/pmc/articles/PMC5986826" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div class="nl"><a target="_blank" href="/pubmed/26907576">The Safety of Exercise in Individuals With Cardiomyopathy.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Finocchiaro G,
Sharma S</span><br />
<span class="medgenPMjournal">Can J Cardiol</span>
2016 Apr;32(4):467-74.
Epub 2015 Dec 15
doi: 10.1016/j.cjca.2015.12.005.
<span class="bold">PMID: </span><a href="/pubmed/26907576" target="_blank">26907576</a></div>
<div class="nl"><a target="_blank" href="/pubmed/10612269">Drug-induced diabetes insipidus: incidence, prevention and management.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Bendz H,
Aurell M</span><br />
<span class="medgenPMjournal">Drug Saf</span>
1999 Dec;21(6):449-56.
doi: 10.2165/00002018-199921060-00002.
<span class="bold">PMID: </span><a href="/pubmed/10612269" target="_blank">10612269</a></div>
<div class="nl"><a target="_blank" href="/pubmed/5084460">Cot deaths.</a></div>
<div class="portlet_content ln"><span class="medgenPMjournal">J R Coll Gen Pract</span>
1972 Oct;22(123):651-2.
<span class="bold">PMID: </span><a href="/pubmed/5084460" target="_blank">5084460</a><a href="/pmc/articles/PMC2156945" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=%22Dehydration%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 (2699)</a></div><h3 class="subhead">Clinical prediction guides</h3>
<div class="nl"><a target="_blank" href="/pubmed/34284350">Got Beer? A Systematic Review of Beer and Exercise.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Wynne JL,
Wilson PB</span><br />
<span class="medgenPMjournal">Int J Sport Nutr Exerc Metab</span>
2021 Sep 1;31(5):438-450.
Epub 2021 Jul 20
doi: 10.1123/ijsnem.2021-0064.
<span class="bold">PMID: </span><a href="/pubmed/34284350" target="_blank">34284350</a></div>
<div class="nl"><a target="_blank" href="/pubmed/28280231">2017 ACC/AHA/HRS Guideline for the Evaluation and Management of Patients With Syncope: A Report of the American College of Cardiology/American Heart Association Task Force on Clinical Practice Guidelines and the Heart Rhythm Society.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Shen WK,
Sheldon RS,
Benditt DG,
Cohen MI,
Forman DE,
Goldberger ZD,
Grubb BP,
Hamdan MH,
Krahn AD,
Link MS,
Olshansky B,
Raj SR,
Sandhu RK,
Sorajja D,
Sun BC,
Yancy CW</span><br />
<span class="medgenPMjournal">Circulation</span>
2017 Aug 1;136(5):e60-e122.
Epub 2017 Mar 9
doi: 10.1161/CIR.0000000000000499.
<span class="bold">PMID: </span><a href="/pubmed/28280231" target="_blank">28280231</a></div>
<div class="nl"><a target="_blank" href="/pubmed/24692140">Dehydration: physiology, assessment, and performance effects.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Cheuvront SN,
Kenefick RW</span><br />
<span class="medgenPMjournal">Compr Physiol</span>
2014 Jan;4(1):257-85.
doi: 10.1002/cphy.c130017.
<span class="bold">PMID: </span><a href="/pubmed/24692140" target="_blank">24692140</a></div>
<div class="nl"><a target="_blank" href="/pubmed/22707903">Masked hydronephrosis.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Jung LY,
Kang KP,
Kim W,
Park SK,
Lee S</span><br />
<span class="medgenPMjournal">Korean J Intern Med</span>
2012 Jun;27(2):244.
Epub 2012 May 31
doi: 10.3904/kjim.2012.27.2.244.
<span class="bold">PMID: </span><a href="/pubmed/22707903" target="_blank">22707903</a><a href="/pmc/articles/PMC3372815" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div class="nl"><a target="_blank" href="/pubmed/10944139">The Multinational Association for Supportive Care in Cancer risk index: A multinational scoring system for identifying low-risk febrile neutropenic cancer patients.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Klastersky J,
Paesmans M,
Rubenstein EB,
Boyer M,
Elting L,
Feld R,
Gallagher J,
Herrstedt J,
Rapoport B,
Rolston K,
Talcott J</span><br />
<span class="medgenPMjournal">J Clin Oncol</span>
2000 Aug;18(16):3038-51.
doi: 10.1200/JCO.2000.18.16.3038.
<span class="bold">PMID: </span><a href="/pubmed/10944139" target="_blank">10944139</a></div>
<div><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=%22Dehydration%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 (3674)</a></div></div>
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<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>
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<div class="nl"><a target="_blank" href="/pubmed/34716905">The Hydrating Effects of Hypertonic, Isotonic and Hypotonic Sports Drinks and Waters on Central Hydration During Continuous Exercise: A Systematic Meta-Analysis and Perspective.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Rowlands DS,
Kopetschny BH,
Badenhorst CE</span><br />
<span class="medgenPMjournal">Sports Med</span>
2022 Feb;52(2):349-375.
Epub 2021 Oct 30
doi: 10.1007/s40279-021-01558-y.
<span class="bold">PMID: </span><a href="/pubmed/34716905" target="_blank">34716905</a><a href="/pmc/articles/PMC8803723" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div class="nl"><a target="_blank" href="/pubmed/34684642">Interventions to Improve Hydration in Older Adults: A Systematic Review and Meta-Analysis.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Bruno C,
Collier A,
Holyday M,
Lambert K</span><br />
<span class="medgenPMjournal">Nutrients</span>
2021 Oct 18;13(10)
doi: 10.3390/nu13103640.
<span class="bold">PMID: </span><a href="/pubmed/34684642" target="_blank">34684642</a><a href="/pmc/articles/PMC8537864" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div class="nl"><a target="_blank" href="/pubmed/34661279">Screening for aspiration risk associated with dysphagia in acute stroke.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Boaden E,
Burnell J,
Hives L,
Dey P,
Clegg A,
Lyons MW,
Lightbody CE,
Hurley MA,
Roddam H,
McInnes E,
Alexandrov A,
Watkins CL</span><br />
<span class="medgenPMjournal">Cochrane Database Syst Rev</span>
2021 Oct 18;10(10):CD012679.
doi: 10.1002/14651858.CD012679.pub2.
<span class="bold">PMID: </span><a href="/pubmed/34661279" target="_blank">34661279</a><a href="/pmc/articles/PMC8521523" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div class="nl"><a target="_blank" href="/pubmed/28439845">A Systematic Review of the Clinical Presentation, Diagnosis, and Treatment of Small Bowel Obstruction.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Rami Reddy SR,
Cappell MS</span><br />
<span class="medgenPMjournal">Curr Gastroenterol Rep</span>
2017 Jun;19(6):28.
doi: 10.1007/s11894-017-0566-9.
<span class="bold">PMID: </span><a href="/pubmed/28439845" target="_blank">28439845</a></div>
<div class="nl"><a target="_blank" href="/pubmed/24646807">Nausea and vomiting in early pregnancy.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Festin M</span><br />
<span class="medgenPMjournal">BMJ Clin Evid</span>
2014 Mar 19;2014
<span class="bold">PMID: </span><a href="/pubmed/24646807" target="_blank">24646807</a><a href="/pmc/articles/PMC3959188" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=%22Dehydration%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 (258)</a></div></div>
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<div class="portlet_content ln"><ul><li><a href="/gtr/tests?term=C0011175%5bDISCUI%5d&amp;filter=method%3A2%5F8" target="_blank">Deletion/duplication analysis (3)</a></li>
<li><a href="/gtr/tests?term=C0011175%5bDISCUI%5d&amp;filter=method%3A2%5F7" target="_blank">Sequence analysis of the entire coding region (3)</a></li>
<li class="portletSeeAll portletSeeAllPad"><total><a href="/gtr/tests?term=C0011175%5bDISCUI%5d" target="_blank">See all (3)</a></total></li>
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<div class="portlet_content ln"><ul><li><a href="https://clinicaltrials.gov/search?cond=Dehydration" target="_blank">ClinicalTrials.gov</a></li></ul></div>
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