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<meta name="keywords" content="C4721769, argininosuccinate synthase 1-gene related citrullinemia type i, argininosuccinate synthase deficiency, argininosuccinate synthetase deficiency, argininosuccinic acid synthase deficiency, argininosuccinic acid synthetase deficiency, ass deficiency, ass1, ass1-gene related citrullinemia type i, citrullinemia 1, citrullinemia type 1, citrullinemia type i, citrullinemia, classic, citrullinemia, classical, citrullinemia, type 1, citrullinemia, type i, citrullinemias, classic, citrullinuria, classic citrullinemia, classic citrullinemias, classical citrullinemia, classical citrullinemias, ctln1, ctnl1, disease or syndrome, type i citrullinemia, type i citrullinemias, 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="Citrullinemia type I (CTLN1) presents as a spectrum that includes a neonatal acute form (the &quot;classic&quot; form), a milder late-onset form (the &quot;non-classic&quot; form), a form in which women have onset of symptoms at pregnancy or post partum, and a form without symptoms or hyperammonemia. Distinction between the forms is based primarily on clinical findings, although emerging evidence suggests that measurement of residual argininosuccinate synthase enzyme activity may help to predict those who are likely to have a severe phenotype and those who are likely to have an attenuated phenotype. Infants with the acute neonatal form appear normal at birth. Shortly thereafter, they develop hyperammonemia and become progressively lethargic, feed poorly, often vomit, and may develop signs of increased intracranial pressure (ICP). Without prompt intervention, hyperammonemia and the accumulation of other toxic metabolites (e.g., glutamine) result in increased ICP, increased neuromuscular tone, spasticity, ankle clonus, seizures, loss of consciousness, and death. Children with the severe form who are treated promptly may survive for an indeterminate period of time, but usually with significant neurologic deficits. Even with chronic protein restriction and scavenger therapy, long-term complications such as liver failure and other (rarely reported) organ system manifestations are possible. The late-onset form may be milder than that seen in the acute neonatal form, but commences later in life for reasons that are not completely understood. The episodes of hyperammonemia are similar to those seen in the acute neonatal form, but the initial neurologic findings may be more subtle because of the older age of the affected individuals. Women with onset of severe symptoms including acute hepatic decompensation during pregnancy or in the postpartum period have been reported. Furthermore, previously asymptomatic and non-pregnant individuals have been described who remained asymptomatic up to at least age ten years, with the possibility that they could remain asymptomatic lifelong." /><meta name="robots" content="index,nofollow,noarchive" />
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<!--
UID=1648491
ConceptID=C4721769
-->
<!--imgCountBooks = 0--><h1 class="medgenTitle"><div class="MedGenTitleText">Citrullinemia type I<span class="h1sub">(CTNL1)</span></div></h1><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1648491</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.">C4721769</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>argininosuccinate synthetase deficiency; ASS DEFICIENCY; Citrullinemia 1; Classic citrullinemia; CTNL1</td></tr>
<tr><td><span class="bold">SNOMED CT: </span></td>
<td>Citrullinemia type I (1149103000); Citrullinemia type 1 (1149103000); Classic citrullinemia (1149103000); ASS1-gene related citrullinemia type I (1149103000); Argininosuccinate synthase 1-gene related citrullinemia type I (1149103000)</td></tr>
<tr><td>Modes of inheritance:</td>
<td>
<div class="divPopper rprt" id="moi_141025"><div><strong>Autosomal recessive inheritance</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>141025</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0441748</a></dd><dt><span class="dotprefix"></span></dt><dd>Intellectual Product</dd></dl></div></div></div>
<div class="spaceAbove">Source: Orphanet</div>
<div class="spaceAbove">A mode of inheritance that is observed for traits related to a gene encoded on one of the autosomes (i.e., the human chromosomes 1-22) in which a trait manifests in individuals with two pathogenic alleles, either homozygotes (two copies of the same mutant allele) or compound heterozygotes (whereby each copy of a gene has a distinct mutant allele).</div></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#moi_141025" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Autosomal recessive inheritance</a><span> (Orphanet)</span></div></td></tr>
<tr><td colspan="2" class="small"> </td></tr><tr><td><a class="help jig-ncbi-popper" data-jig="ncbipopper" href="#target-gene-loc">Gene (location):<img class="pulldown" src="//static.pubmed.gov/portal/portal3rc.fcgi/4223267/img/4204968" /></a><div class="display-none" id="target-gene-loc">
Gene(s) directly associated with<br />
this condition or phenotype.</div></td>
<td><a target="_blank" title="ASS1 - ID: 445 - NCBI Gene" href="/gene/445" class="medgenPMinfo">ASS1</a> (9q34.11)</td></tr>
<tr><td colspan="2" class="small"> </td></tr><tr><td>Monarch Initiative:</td>
<td><a href="https://monarchinitiative.org/disease/MONDO:0008988" target="_blank">MONDO:0008988</a></td></tr>
<tr><td>OMIM<span class="superscript">®</span>:</td>
<td><a href="https://omim.org/entry/215700" target="_blank">215700</a></td></tr>
<tr><td>Orphanet:</td>
<td><a target="_blank" title="Orphanet: The portal for rare diseases and orphan drugs" href="http://www.orpha.net/consor/cgi-bin/OC_Exp.php?lng=EN&amp;Expert=247525">ORPHA247525</a></td></tr></tbody></table></div><div class="rprt-body jig-ncbiinpagenav" data-jigconfig="smoothScroll: false, gotoTopLink: true, gotoTopLinkText: '', gotoTopLinkAttrs: {'title': 'Go to the top of the page'},allHeadingLevels: ['h1'], topOfPageTOC: true, tocId: 'my-toc'"><div id="rprt-tabs-1" class="rprt-tab"><div id="tb-termsProp-1"><div class="leftCol mgCol"><div>
<div class="portlet mgSection" id="ID_100">
<div class="portlet_head mgSectionHead ui-widget-header"><h1 class="nl" id="Definition">Definition</h1><a sid="100" href="#" class="portlet_shutter" title="Show/hide content"></a></div>
<div class="portlet_content ln">Citrullinemia type I (CTLN1) presents as a spectrum that includes a neonatal acute form (the "classic" form), a milder late-onset form (the "non-classic" form), a form in which women have onset of symptoms at pregnancy or post partum, and a form without symptoms or hyperammonemia. Distinction between the forms is based primarily on clinical findings, although emerging evidence suggests that measurement of residual argininosuccinate synthase enzyme activity may help to predict those who are likely to have a severe phenotype and those who are likely to have an attenuated phenotype. Infants with the acute neonatal form appear normal at birth. Shortly thereafter, they develop hyperammonemia and become progressively lethargic, feed poorly, often vomit, and may develop signs of increased intracranial pressure (ICP). Without prompt intervention, hyperammonemia and the accumulation of other toxic metabolites (e.g., glutamine) result in increased ICP, increased neuromuscular tone, spasticity, ankle clonus, seizures, loss of consciousness, and death. Children with the severe form who are treated promptly may survive for an indeterminate period of time, but usually with significant neurologic deficits. Even with chronic protein restriction and scavenger therapy, long-term complications such as liver failure and other (rarely reported) organ system manifestations are possible. The late-onset form may be milder than that seen in the acute neonatal form, but commences later in life for reasons that are not completely understood. The episodes of hyperammonemia are similar to those seen in the acute neonatal form, but the initial neurologic findings may be more subtle because of the older age of the affected individuals. Women with onset of severe symptoms including acute hepatic decompensation during pregnancy or in the postpartum period have been reported. Furthermore, previously asymptomatic and non-pregnant individuals have been described who remained asymptomatic up to at least age ten years, with the possibility that they could remain asymptomatic lifelong. [from <a title="GeneReviews" href="https://www.ncbi.nlm.nih.gov/books/NBK1116" class="defSource" target="_blank">GeneReviews</a>]</div>
</div>
<div class="portlet mgSection" id="ID_117">
<div class="portlet_head mgSectionHead ui-widget-header"><h1 class="nl" id="Additional_description">Additional description</h1><a sid="117" href="#" class="portlet_shutter" title="Show/hide content"></a></div>
<div class="portlet_content ln"><div class="mgSection"><strong>From MedlinePlus Genetics</strong><br />Adult-onset type II citrullinemia may also develop in people who as infants had a liver disorder called neonatal intrahepatic cholestasis caused by citrin deficiency (NICCD). This liver condition is also known as neonatal-onset type II citrullinemia. NICCD blocks the flow of bile (a digestive fluid produced by the liver) and prevents the body from processing certain nutrients properly. In many cases, the signs and symptoms of NICCD go away within a year. In rare cases, affected individuals develop other signs and symptoms in early childhood after seeming to recover from NICCD, including delayed growth, extreme tiredness (fatigue), specific food preferences (mentioned above), and abnormal amounts of fats (lipids) in the blood (dyslipidemia). This condition is known as failure to thrive and dyslipidemia caused by citrin deficiency (FTTDCD). Years or even decades later, some people with NICCD or FTTDCD develop the features of adult-onset type II citrullinemia.<br /><br />Citrullinemia is an inherited disorder that causes ammonia and other toxic substances to accumulate in the blood. Two types of citrullinemia have been described; they have different signs and symptoms and are caused by mutations in different genes.<br /><br />Type I citrullinemia (also known as classic citrullinemia) usually becomes evident in the first few days of life. Affected infants typically appear normal at birth, but as ammonia builds up, they experience a progressive lack of energy (lethargy), poor feeding, vomiting, seizures, and loss of consciousness. Some affected individuals develop serious liver problems. The health problems associated with type I citrullinemia are life-threatening in many cases. Less commonly, a milder form of type I citrullinemia can develop later in childhood or adulthood. This later-onset form is associated with intense headaches, blind spots (scotomas), problems with balance and muscle coordination (ataxia), and lethargy. Some people with gene mutations that cause type I citrullinemia never experience signs and symptoms of the disorder.<br /><br />Type II citrullinemia chiefly affects the nervous system, causing confusion, restlessness, memory loss, abnormal behaviors (such as aggression, irritability, and hyperactivity), seizures, and coma. Affected individuals often have specific food preferences, preferring protein-rich and fatty foods and avoiding carbohydrate-rich foods. The signs and symptoms of this disorder typically appear during adulthood (adult-onset) and can be triggered by certain medications, infections, surgery, and alcohol intake. These signs and symptoms can be life-threatening in people with adult-onset type II citrullinemia.  <a target="_blank" href="https://medlineplus.gov/genetics/condition/citrullinemia">https://medlineplus.gov/genetics/condition/citrullinemia</a></div></div>
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<div class="portlet mgSection" id="ID_102">
<div class="portlet_head mgSectionHead ui-widget-header"><h1 class="nl" id="Clinical_features">Clinical features</h1><a sid="102" href="#" class="portlet_shutter" title="Show/hide content"></a></div>
<div class="portlet_content ln clinfeat"><strong>From HPO</strong><br />
<div class="divPopper rprt" id="clin_78642"><div><strong>Oroticaciduria</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>78642</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.">C0268128</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">An increased concentration of orotic acid in the urine.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/78642">Feature record</a> | <a href="/medgen?term=%22Oroticaciduria%22%5BClinical%20Features%5D%20OR%2078642%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_52522"><div><strong>Stroke disorder</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>52522</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.">C0038454</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Sudden impairment of blood flow to a part of the brain due to occlusion or rupture of an artery to the brain.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/52522">Feature record</a> | <a href="/medgen?term=%22Stroke%20disorder%22%5BClinical%20Features%5D%20OR%2052522%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_746019"><div><strong>Failure to thrive</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>746019</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2315100</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Failure to thrive (FTT) refers to a child whose physical growth is substantially below the norm.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/746019">Feature record</a> | <a href="/medgen?term=%22Failure%20to%20thrive%22%5BClinical%20Features%5D%20OR%20746019%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_42428"><div><strong>Hepatomegaly</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>42428</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.">C0019209</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">Abnormally increased size of the liver.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/42428">Feature record</a> | <a href="/medgen?term=%22Hepatomegaly%22%5BClinical%20Features%5D%20OR%2042428%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_7368"><div><strong>Cirrhosis of liver</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>7368</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.">C0023890</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">A chronic disorder of the liver in which liver tissue becomes scarred and is partially replaced by regenerative nodules and fibrotic tissue resulting in loss of liver function.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/7368">Feature record</a> | <a href="/medgen?term=%22Cirrhosis%20of%20liver%22%5BClinical%20Features%5D%20OR%207368%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_12124"><div><strong>Vomiting</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>12124</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.">C0042963</a></dd><dt><span class="dotprefix"></span></dt><dd>Sign or Symptom</dd></dl></div></div></div>
<div class="spaceAbove">Forceful ejection of the contents of the stomach through the mouth by means of a series of involuntary spasmic contractions.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/12124">Feature record</a> | <a href="/medgen?term=%22Vomiting%22%5BClinical%20Features%5D%20OR%2012124%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_326521"><div><strong>Protein avoidance</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>326521</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.">C1839531</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/326521">Feature record</a> | <a href="/medgen?term=%22Protein%20avoidance%22%5BClinical%20Features%5D%20OR%20326521%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_2337"><div><strong>Cerebral edema</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>2337</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.">C0006114</a></dd><dt><span class="dotprefix"></span></dt><dd>Pathologic Function</dd></dl></div></div></div>
<div class="spaceAbove">Abnormal accumulation of fluid in the brain.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/2337">Feature record</a> | <a href="/medgen?term=%22Cerebral%20edema%22%5BClinical%20Features%5D%20OR%202337%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_849"><div><strong>Cerebellar ataxia</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>849</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.">C0007758</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Cerebellar ataxia refers to ataxia due to dysfunction of the cerebellum. This causes a variety of elementary neurological deficits including asynergy (lack of coordination between muscles, limbs and joints), dysmetria (lack of ability to judge distances that can lead to under- or overshoot in grasping movements), and dysdiadochokinesia (inability to perform rapid movements requiring antagonizing muscle groups to be switched on and off repeatedly).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/849">Feature record</a> | <a href="/medgen?term=%22Cerebellar%20ataxia%22%5BClinical%20Features%5D%20OR%20849%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_1054"><div><strong>Coma</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1054</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.">C0009421</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">The complete absence of wakefulness and consciousness, which is evident through a lack of response to any form of external stimuli.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1054">Feature record</a> | <a href="/medgen?term=%22Coma%22%5BClinical%20Features%5D%20OR%201054%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_7310"><div><strong>Lethargy</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>7310</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.">C0023380</a></dd><dt><span class="dotprefix"></span></dt><dd>Sign or Symptom</dd></dl></div></div></div>
<div class="spaceAbove">A state of fatigue, either physical or mental slowness and sluggishness, with difficulties in initiating or performing simple tasks. Distinguished from apathy which implies indifference and a lack of desire or interest in the task. A person with lethargy may have the desire, but not the energy to engage in personal or socially relevant tasks.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/7310">Feature record</a> | <a href="/medgen?term=%22Lethargy%22%5BClinical%20Features%5D%20OR%207310%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_20693"><div><strong>Seizure</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>20693</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.">C0036572</a></dd><dt><span class="dotprefix"></span></dt><dd>Sign or Symptom</dd></dl></div></div></div>
<div class="spaceAbove">A seizure is an intermittent abnormality of nervous system physiology characterized by a transient occurrence of signs and/or symptoms due to abnormal excessive or synchronous neuronal activity in the brain.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/20693">Feature record</a> | <a href="/medgen?term=%22Seizure%22%5BClinical%20Features%5D%20OR%2020693%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_107838"><div><strong>Global developmental delay</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>107838</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.">C0557874</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">A delay in the achievement of motor or mental milestones in the domains of development of a child, including motor skills, speech and language, cognitive skills, and social and emotional skills. This term should only be used to describe children younger than five years of age.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/107838">Feature record</a> | <a href="/medgen?term=%22Global%20developmental%20delay%22%5BClinical%20Features%5D%20OR%20107838%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_397841"><div><strong>Irritability</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>397841</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2700617</a></dd><dt><span class="dotprefix"></span></dt><dd>Mental Process</dd></dl></div></div></div>
<div class="spaceAbove">A proneness to anger, i.e., a tendency to become easily bothered or annoyed.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen?term=%22Irritability%22%5BClinical%20Features%5D%20OR%20397841%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_811461"><div><strong>Intellectual disability</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>811461</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.">C3714756</a></dd><dt><span class="dotprefix"></span></dt><dd>Mental or Behavioral Dysfunction</dd></dl></div></div></div>
<div class="spaceAbove">Intellectual disability, previously referred to as mental retardation, is characterized by subnormal intellectual functioning that occurs during the developmental period. It is defined by an IQ score below 70.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/811461">Feature record</a> | <a href="/medgen?term=%22Intellectual%20disability%22%5BClinical%20Features%5D%20OR%20811461%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_1411"><div><strong>Respiratory alkalosis</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1411</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.">C0002064</a></dd><dt><span class="dotprefix"></span></dt><dd>Pathologic Function</dd></dl></div></div></div>
<div class="spaceAbove">Alkalosis due to excess loss of carbon dioxide from the body.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1411">Feature record</a> | <a href="/medgen?term=%22Respiratory%20alkalosis%22%5BClinical%20Features%5D%20OR%201411%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_326901"><div><strong>Hyperglutaminemia</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>326901</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.">C1839533</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">An increased concentration of glutamine in the blood.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/326901">Feature record</a> | <a href="/medgen?term=%22Hyperglutaminemia%22%5BClinical%20Features%5D%20OR%20326901%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_333343"><div><strong>Episodic ammonia intoxication</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>333343</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.">C1839541</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/333343">Feature record</a> | <a href="/medgen?term=%22Episodic%20ammonia%20intoxication%22%5BClinical%20Features%5D%20OR%20333343%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_868699"><div><strong>Elevated plasma citrulline</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>868699</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.">C4023102</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">An increased concentration of citrulline in the blood.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/868699">Feature record</a> | <a href="/medgen?term=%22Elevated%20plasma%20citrulline%22%5BClinical%20Features%5D%20OR%20868699%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_892673"><div><strong>Hypoargininemia</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>892673</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.">C4025095</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">A decreased concentration of arginine in the blood.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/892673">Feature record</a> | <a href="/medgen?term=%22Hypoargininemia%22%5BClinical%20Features%5D%20OR%20892673%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_1802066"><div><strong>Hyperammonemia</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1802066</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.">C5574662</a></dd><dt><span class="dotprefix"></span></dt><dd>Laboratory or Test Result</dd></dl></div></div></div>
<div class="spaceAbove">An increased concentration of ammonia in the blood.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen?term=%22Hyperammonemia%22%5BClinical%20Features%5D%20OR%201802066%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_1864277"><div><strong>Reduced tissue argininosuccinate synthetase activity</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1864277</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.">C5937147</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">Concentration of argininosuccinate synthetase (EC 6.3.4.5) in body tissues is below the lower limit of normal. Clinically, argininosuccinate synthetase is measured in the liver or in cultered skin fibroblasts.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1864277">Feature record</a> | <a href="/medgen?term=%22Reduced%20tissue%20argininosuccinate%20synthetase%20activity%22%5BClinical%20Features%5D%20OR%201864277%5Buid%5D">Search on this feature</a></div></div><div class="TreeLite" data-jigconfig="closed: 1"><div class="concept-def"><a class="small" href="#" onclick="jQuery(&quot;.TreeLite&quot;,&quot;#ID_102&quot;).TreeLite().openAll(); return false;">Show all</a><a class="small" href="#" onclick="jQuery(&quot;.TreeLite&quot;,&quot;#ID_102&quot;).TreeLite().closeAll(); return false;">Hide all</a></div><ul><li><span class="TLline">Abnormality of metabolism/homeostasis</span><ul><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_868699" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Elevated plasma citrulline</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_333343" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Episodic ammonia intoxication</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_1802066" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hyperammonemia</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_326901" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hyperglutaminemia</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_892673" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hypoargininemia</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_1864277" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Reduced tissue argininosuccinate synthetase activity</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_1411" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Respiratory alkalosis</a></span></li></ul></li><li><span class="TLline">Abnormality of the cardiovascular system</span><ul><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_52522" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Stroke disorder</a></span></li></ul></li><li><span class="TLline">Abnormality of the digestive system</span><ul><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_7368" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Cirrhosis of liver</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_42428" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hepatomegaly</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_326521" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Protein avoidance</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_12124" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Vomiting</a></span></li></ul></li><li><span class="TLline">Abnormality of the genitourinary system</span><ul><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_78642" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Oroticaciduria</a></span></li></ul></li><li><span class="TLline">Abnormality of the nervous system</span><ul><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_849" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Cerebellar ataxia</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_2337" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Cerebral edema</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_1054" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Coma</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_107838" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Global developmental delay</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_811461" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_397841" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Irritability</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_7310" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Lethargy</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_20693" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Seizure</a></span></li></ul></li><li><span class="TLline">Growth abnormality</span><ul><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_746019" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Failure to thrive</a></span></li></ul></li></ul></div></div>
</div>
<div class="portlet mgSection" id="ID_118">
<div class="portlet_head mgSectionHead ui-widget-header"><h1 class="nl" id="Term_Hierarchy">Term Hierarchy</h1><a sid="118" href="#" class="portlet_shutter" title="Show/hide content"></a></div>
<div class="portlet_content ln HierarchyGTR"><div class="jig-ncbitabs"><ul><li><a href="#tabGTR">GTR</a></li><li><a href="#tabMGEN">MeSH</a></li></ul><div id="tabGTR"><div class="search_result"><div class="rprts"><div class="chiclet_legend"><span class="chiclet_list" style="position:static;"><span title="Clinical test" class="chiclet Ccolor round">C</span><span>Clinical test,  </span><span title="Research test" class="chiclet Rcolor round">R</span><span>Research test,  </span><span title="OMIM" class="chiclet Ocolor ">O</span><span>OMIM,  </span><span title="GeneReview" class="chiclet Gcolor">G</span><span><em>GeneReviews</em>,  </span><span title="ClinVar" class="chiclet Vcolor">V</span><span>ClinVar  </span></span></div><div id="hierarchy" class="margin_t1"><div class="ds_tree"><ul><li class="TLclosed"><span class="chiclet_list"><span class="chiclet Ccolor round" title="Clinical test"><a target="_blank" href="/gtr/tests/?term=C0154246[DISCUI]&amp;test_type=Clinical" ref="ncbi_uid=57586">C</a></span><span class="chiclet unavailable round" title="Research Tests">R</span><span class="chiclet unavailable" title="OMIM">O</span><span class="chiclet Gcolor" title="GeneReviews"><a target="_blank" href="/books/NBK1217/" ref="ncbi_uid=57586">G</a></span><span class="chiclet unavailable" title="ClinVar">V</span></span><span class="TLline"><a href="/medgen/57586" ref="tree=GTR&amp;ncbi_uid=57586&amp;link_uid=57586" title="View MedGen record for 'Disorder of the urea cycle metabolism'">Disorder of the urea cycle metabolism</a></span><ul><li class="TLclosed"><span class="chiclet_list"><span class="chiclet Ccolor round" title="Clinical test"><a target="_blank" href="/gtr/tests/?term=C0268548[DISCUI]&amp;test_type=Clinical" ref="ncbi_uid=78688">C</a></span><span class="chiclet unavailable round" title="Research Tests">R</span><span class="chiclet Ocolor" title="OMIM"><a ref="ncbi_uid=78688" target="_blank" href="/omim/207800">O</a></span><span class="chiclet Gcolor" title="GeneReviews"><a target="_blank" href="/books/?term=(NBK1159%20OR%20NBK1217)%20AND%20gene%5Bbook%5D&amp;showtype=onebook" ref="ncbi_uid=78688">G</a></span><span class="chiclet Vcolor" title="ClinVar"><a target="_blank" href="/clinvar?LinkName=medgen_clinvar&amp;from_uid=78688" ref="ncbi_uid=78688">V</a></span></span><span class="TLline"><a href="/medgen/78688" ref="tree=GTR&amp;ncbi_uid=78688&amp;link_uid=78688" title="View MedGen record for 'Arginase deficiency'">Arginase deficiency</a></span></li><li class="TLclosed"><span class="chiclet_list"><span class="chiclet Ccolor round" title="Clinical test"><a target="_blank" href="/gtr/tests/?term=C0268547[DISCUI]&amp;test_type=Clinical" ref="ncbi_uid=78687">C</a></span><span class="chiclet unavailable round" title="Research Tests">R</span><span class="chiclet Ocolor" title="OMIM"><a ref="ncbi_uid=78687" target="_blank" href="/omim/207900">O</a></span><span class="chiclet Gcolor" title="GeneReviews"><a target="_blank" href="/books/?term=(NBK1217%20OR%20NBK51784)%20AND%20gene%5Bbook%5D&amp;showtype=onebook" ref="ncbi_uid=78687">G</a></span><span class="chiclet Vcolor" title="ClinVar"><a target="_blank" href="/clinvar?LinkName=medgen_clinvar&amp;from_uid=78687" ref="ncbi_uid=78687">V</a></span></span><span class="TLline"><a href="/medgen/78687" ref="tree=GTR&amp;ncbi_uid=78687&amp;link_uid=78687" title="View MedGen record for 'Argininosuccinate lyase deficiency'">Argininosuccinate lyase deficiency</a></span></li><li class="TLclosed"><span class="chiclet_list"><span class="chiclet Ccolor round" title="Clinical test"><a target="_blank" href="/gtr/tests/?term=C0175683[DISCUI]&amp;test_type=Clinical" ref="ncbi_uid=104491">C</a></span><span class="chiclet unavailable round" title="Research Tests">R</span><span class="chiclet Ocolor" title="OMIM"><a ref="ncbi_uid=104491" target="_blank" href="/omim/215700">O</a></span><span class="chiclet unavailable" title="GeneReviews">G</span><span class="chiclet Vcolor" title="ClinVar"><a target="_blank" href="/clinvar?LinkName=medgen_clinvar&amp;from_uid=104491" ref="ncbi_uid=104491">V</a></span></span><span class="TLline"><a href="/medgen/104491" ref="tree=GTR&amp;ncbi_uid=104491&amp;link_uid=104491" title="View MedGen record for 'Citrullinemia'">Citrullinemia</a></span><ul><li class="matched_ds"><span class="chiclet_list"><span class="chiclet Ccolor round" title="Clinical test"><a target="_blank" href="/gtr/tests/?term=C4721769[DISCUI]&amp;test_type=Clinical" ref="ncbi_uid=1648491">C</a></span><span class="chiclet unavailable round" title="Research Tests">R</span><span class="chiclet Ocolor" title="OMIM"><a ref="ncbi_uid=1648491" target="_blank" href="/omim/215700">O</a></span><span class="chiclet Gcolor" title="GeneReviews"><a target="_blank" href="/books/?term=(NBK1217%20OR%20NBK1458)%20AND%20gene%5Bbook%5D&amp;showtype=onebook" ref="ncbi_uid=1648491">G</a></span><span class="chiclet Vcolor" title="ClinVar"><a target="_blank" href="/clinvar?LinkName=medgen_clinvar&amp;from_uid=1648491" ref="ncbi_uid=1648491">V</a></span></span><span class="TLline">Citrullinemia type I</span></li></ul></li><li class="TLclosed"><span class="chiclet_list"><span class="chiclet Ccolor round" title="Clinical test"><a target="_blank" href="/gtr/tests/?term=C4082171[DISCUI]&amp;test_type=Clinical" ref="ncbi_uid=907954">C</a></span><span class="chiclet unavailable round" title="Research Tests">R</span><span class="chiclet Ocolor" title="OMIM"><a ref="ncbi_uid=907954" target="_blank" href="/omim/237300">O</a></span><span class="chiclet Gcolor" title="GeneReviews"><a target="_blank" href="/books/NBK1217/" ref="ncbi_uid=907954">G</a></span><span class="chiclet Vcolor" title="ClinVar"><a target="_blank" href="/clinvar?LinkName=medgen_clinvar&amp;from_uid=907954" ref="ncbi_uid=907954">V</a></span></span><span class="TLline"><a href="/medgen/907954" ref="tree=GTR&amp;ncbi_uid=907954&amp;link_uid=907954" title="View MedGen record for 'Congenital hyperammonemia, type I'">Congenital hyperammonemia, type I</a></span></li><li class="TLclosed"><span class="chiclet_list"><span class="chiclet Ccolor round" title="Clinical test"><a target="_blank" href="/gtr/tests/?term=C0268543[DISCUI]&amp;test_type=Clinical" ref="ncbi_uid=120649">C</a></span><span class="chiclet unavailable round" title="Research Tests">R</span><span class="chiclet Ocolor" title="OMIM"><a ref="ncbi_uid=120649" target="_blank" href="/omim/237310">O</a></span><span class="chiclet Gcolor" title="GeneReviews"><a target="_blank" href="/books/NBK1217/" ref="ncbi_uid=120649">G</a></span><span class="chiclet Vcolor" title="ClinVar"><a target="_blank" href="/clinvar?LinkName=medgen_clinvar&amp;from_uid=120649" ref="ncbi_uid=120649">V</a></span></span><span class="TLline"><a href="/medgen/120649" ref="tree=GTR&amp;ncbi_uid=120649&amp;link_uid=120649" title="View MedGen record for 'Hyperammonemia, type III'">Hyperammonemia, type III</a></span></li><li class="TLclosed"><span class="chiclet_list"><span class="chiclet Ccolor round" title="Clinical test"><a target="_blank" href="/gtr/tests/?term=C0268542[DISCUI]&amp;test_type=Clinical" ref="ncbi_uid=75692">C</a></span><span class="chiclet unavailable round" title="Research Tests">R</span><span class="chiclet Ocolor" title="OMIM"><a ref="ncbi_uid=75692" target="_blank" href="/omim/300461">O</a></span><span class="chiclet Gcolor" title="GeneReviews"><a target="_blank" href="/books/?term=(NBK1217%20OR%20NBK154378)%20AND%20gene%5Bbook%5D&amp;showtype=onebook" ref="ncbi_uid=75692">G</a></span><span class="chiclet Vcolor" title="ClinVar"><a target="_blank" href="/clinvar?LinkName=medgen_clinvar&amp;from_uid=75692" ref="ncbi_uid=75692">V</a></span></span><span class="TLline"><a href="/medgen/75692" ref="tree=GTR&amp;ncbi_uid=75692&amp;link_uid=75692" title="View MedGen record for 'Ornithine carbamoyltransferase deficiency'">Ornithine carbamoyltransferase deficiency</a></span></li></ul></li></ul></div></div></div></div></div><div id="tabMGEN"><div class="ds_tree"><ul><li><span class="TLline"><a href="/medgen/14319" ref="tree=MeSH" title="MedGen record for Congenital, Hereditary, and Neonatal Diseases and Abnormalities">Congenital, Hereditary, and Neonatal Diseases and Abnormalities</a></span><ul><li><span class="TLline"><a href="/medgen/181981" ref="tree=MeSH" title="MedGen record for Inborn genetic diseases">Inborn genetic diseases</a></span><ul><li><span class="TLline"><a href="/medgen/6323" ref="tree=MeSH" title="MedGen record for Inborn errors of metabolism">Inborn errors of metabolism</a></span><ul><li><span class="TLline"><a href="/medgen/156005" ref="tree=MeSH" title="MedGen record for Brain Diseases, Metabolic, Inborn">Brain Diseases, Metabolic, Inborn</a></span><ul><li><span class="TLline"><a href="/medgen/57586" ref="tree=MeSH" title="MedGen record for Disorder of the urea cycle metabolism">Disorder of the urea cycle metabolism</a></span><ul><li><span class="TLline"><a href="/medgen/104491" ref="tree=MeSH" title="MedGen record for Citrullinemia">Citrullinemia</a></span><ul><li><span class="matched_ds">Citrullinemia type I</span><ul><li><span class="TLline"><a href="/medgen/1843387" ref="tree=MeSH" title="MedGen record for Acute neonatal citrullinemia type I">Acute neonatal citrullinemia type I</a></span></li><li><span class="TLline"><a href="/medgen/831252" ref="tree=MeSH" title="MedGen record for Adult-onset citrullinemia type I">Adult-onset citrullinemia type I</a></span></li></ul></li></ul></li></ul></li></ul></li></ul></li></ul></li></ul></li></ul></div></div></div></div>
</div>
<div class="portlet mgSection" id="ID_105">
<div class="portlet_head mgSectionHead ui-widget-header"><h1 class="nl" id="Professional_guidelines">Professional guidelines</h1><a sid="105" href="#" class="portlet_shutter" title="Show/hide content"></a></div>
<div class="portlet_content ln"><h3 class="subhead">PubMed<a class="help jig-ncbi-popper" data-jig="ncbipopper" href="#guidelinesHelpPM"><img class="pulldown" src="//static.pubmed.gov/portal/portal3rc.fcgi/4223267/img/4204968" /></a></h3>
<div class="nl"><a target="_blank" href="/pubmed/29948967">High incidence of maternal vitamin B(12) deficiency detected by newborn screening: first results from a study for the evaluation of 26 additional target disorders for the German newborn screening panel.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Gramer G,
Fang-Hoffmann J,
Feyh P,
Klinke G,
Monostori P,
Okun JG,
Hoffmann GF</span><br />
<span class="medgenPMjournal">World J Pediatr</span>
2018 Oct;14(5):470-481.
Epub 2018 Jun 15
doi: 10.1007/s12519-018-0159-1.
<span class="bold">PMID: </span><a href="/pubmed/29948967" target="_blank">29948967</a></div>
<div class="nl"><a target="_blank" href="/pubmed/29094226">Aminoacidopathies: Prevalence, Etiology, Screening, and Treatment Options.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Wasim M,
Awan FR,
Khan HN,
Tawab A,
Iqbal M,
Ayesha H</span><br />
<span class="medgenPMjournal">Biochem Genet</span>
2018 Apr;56(1-2):7-21.
Epub 2017 Nov 1
doi: 10.1007/s10528-017-9825-6.
<span class="bold">PMID: </span><a href="/pubmed/29094226" target="_blank">29094226</a></div>
<div class="nl"><a target="_blank" href="/pubmed/24889030">Improved standards for prenatal diagnosis of citrullinemia.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Miller MJ,
Soler-Alfonso CR,
Grund JE,
Fang P,
Sun Q,
Elsea SH,
Sutton VR</span><br />
<span class="medgenPMjournal">Mol Genet Metab</span>
2014 Jul;112(3):205-9.
Epub 2014 May 16
doi: 10.1016/j.ymgme.2014.05.004.
<span class="bold">PMID: </span><a href="/pubmed/24889030" target="_blank">24889030</a></div>
<div><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=(%22citrullinemia%20type%20i%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 (3)</a></div><h3 class="subhead">Curated<a class="help jig-ncbi-popper" data-jig="ncbipopper" href="#guidelinesHelpCurated"><img class="pulldown" src="//static.pubmed.gov/portal/portal3rc.fcgi/4223267/img/4204968" /></a></h3><h3 class="nl vspace"><a href="https://www.acmg.net/PDFLibrary/Citrullinemia.pdf" target="_blank">American College of Medical Genetics and Genomics, Newborn Screening ACT Sheet, [Elevated Citrulline], Amino Acidemia/Urea Cycle Disorder, 2022</a></h3>
<h3 class="nl vspace"><a href="https://www.acmg.net/PDFLibrary/Citrulline-Algorithm.pdf" target="_blank">American College of Medical Genetics and Genomics, Elevated Citrulline: Amino Acidemia Algorithm, 2022</a></h3>
<h3 class="nl vspace"><a href="https://www.acmg.net/PDFLibrary/Citrullinemia-I-Transition.pdf" target="_blank">American College of Medical Genetics and Genomics, Transition to Adult Health Care ACT Sheet, Citrullinemia I, Urea Cycle Disorder, 2012</a></h3>
</div>
</div>
<div class="display-none help-popup" id="guidelinesHelpPM">These guidelines are articles in PubMed that match specific search criteria developed by MedGen to capture the most relevant practice guidelines. This list may not be comprehensive and may include broader topics as well. See the <a href="/medgen/docs/faq/" title="Frequently asked questions" target="_blank">FAQ</a> for details.</div><div class="display-none help-popup" id="guidelinesHelpCurated">These guidelines are manually curated by the MedGen team
to supplement articles available in PubMed. See the <a href="/medgen/docs/faq/" title="Frequently asked questions" target="_blank">FAQ</a> for details.</div>
<div class="portlet mgSection" id="ID_103">
<div class="portlet_head mgSectionHead ui-widget-header"><h1 class="nl" id="Recent_clinical_studies">Recent clinical studies</h1><a sid="103" href="#" class="portlet_shutter" title="Show/hide content"></a></div>
<div class="portlet_content ln"><h3 class="subhead">Etiology</h3>
<div class="nl"><a target="_blank" href="/pubmed/36536326">Hyperammonemia in a pregnant woman with citrullinemia type I: a case report and literature review.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Zhou Y,
Dou X,
Zhang C,
He R,
Ding Y</span><br />
<span class="medgenPMjournal">BMC Pregnancy Childbirth</span>
2022 Dec 19;22(1):950.
doi: 10.1186/s12884-022-05298-3.
<span class="bold">PMID: </span><a href="/pubmed/36536326" target="_blank">36536326</a><a href="/pmc/articles/PMC9762101" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div class="nl"><a target="_blank" href="/pubmed/33617202">Outcome of Liver Transplantation for Neonatal-onset Citrullinemia Type I.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Liu Y,
Luo Y,
Xia L,
Qiu B,
Zhou T,
Feng M,
Wang C,
Xue F,
Chen X,
Han L,
Zhang J,
Xia Q</span><br />
<span class="medgenPMjournal">Transplantation</span>
2021 Mar 1;105(3):569-576.
doi: 10.1097/TP.0000000000003261.
<span class="bold">PMID: </span><a href="/pubmed/33617202" target="_blank">33617202</a></div>
<div class="nl"><a target="_blank" href="/pubmed/29948967">High incidence of maternal vitamin B(12) deficiency detected by newborn screening: first results from a study for the evaluation of 26 additional target disorders for the German newborn screening panel.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Gramer G,
Fang-Hoffmann J,
Feyh P,
Klinke G,
Monostori P,
Okun JG,
Hoffmann GF</span><br />
<span class="medgenPMjournal">World J Pediatr</span>
2018 Oct;14(5):470-481.
Epub 2018 Jun 15
doi: 10.1007/s12519-018-0159-1.
<span class="bold">PMID: </span><a href="/pubmed/29948967" target="_blank">29948967</a></div>
<div class="nl"><a target="_blank" href="/pubmed/29094226">Aminoacidopathies: Prevalence, Etiology, Screening, and Treatment Options.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Wasim M,
Awan FR,
Khan HN,
Tawab A,
Iqbal M,
Ayesha H</span><br />
<span class="medgenPMjournal">Biochem Genet</span>
2018 Apr;56(1-2):7-21.
Epub 2017 Nov 1
doi: 10.1007/s10528-017-9825-6.
<span class="bold">PMID: </span><a href="/pubmed/29094226" target="_blank">29094226</a></div>
<div class="nl"><a target="_blank" href="/pubmed/23099195">Mutation spectrum of the ASS1 gene in Korean patients with citrullinemia type I.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Woo HI,
Ki CS,
Lee SY,
Kim JW,
Song J,
Jin DK,
Park WS,
Lee DH,
Lee YW,
Park HD</span><br />
<span class="medgenPMjournal">Clin Biochem</span>
2013 Feb;46(3):209-13.
Epub 2012 Oct 22
doi: 10.1016/j.clinbiochem.2012.10.008.
<span class="bold">PMID: </span><a href="/pubmed/23099195" target="_blank">23099195</a></div>
<div><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=%22Citrullinemia%20type%20I%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 (9)</a></div><h3 class="subhead">Diagnosis</h3>
<div class="nl"><a target="_blank" href="/pubmed/36536326">Hyperammonemia in a pregnant woman with citrullinemia type I: a case report and literature review.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Zhou Y,
Dou X,
Zhang C,
He R,
Ding Y</span><br />
<span class="medgenPMjournal">BMC Pregnancy Childbirth</span>
2022 Dec 19;22(1):950.
doi: 10.1186/s12884-022-05298-3.
<span class="bold">PMID: </span><a href="/pubmed/36536326" target="_blank">36536326</a><a href="/pmc/articles/PMC9762101" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div class="nl"><a target="_blank" href="/pubmed/33617202">Outcome of Liver Transplantation for Neonatal-onset Citrullinemia Type I.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Liu Y,
Luo Y,
Xia L,
Qiu B,
Zhou T,
Feng M,
Wang C,
Xue F,
Chen X,
Han L,
Zhang J,
Xia Q</span><br />
<span class="medgenPMjournal">Transplantation</span>
2021 Mar 1;105(3):569-576.
doi: 10.1097/TP.0000000000003261.
<span class="bold">PMID: </span><a href="/pubmed/33617202" target="_blank">33617202</a></div>
<div class="nl"><a target="_blank" href="/pubmed/29948967">High incidence of maternal vitamin B(12) deficiency detected by newborn screening: first results from a study for the evaluation of 26 additional target disorders for the German newborn screening panel.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Gramer G,
Fang-Hoffmann J,
Feyh P,
Klinke G,
Monostori P,
Okun JG,
Hoffmann GF</span><br />
<span class="medgenPMjournal">World J Pediatr</span>
2018 Oct;14(5):470-481.
Epub 2018 Jun 15
doi: 10.1007/s12519-018-0159-1.
<span class="bold">PMID: </span><a href="/pubmed/29948967" target="_blank">29948967</a></div>
<div class="nl"><a target="_blank" href="/pubmed/29094226">Aminoacidopathies: Prevalence, Etiology, Screening, and Treatment Options.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Wasim M,
Awan FR,
Khan HN,
Tawab A,
Iqbal M,
Ayesha H</span><br />
<span class="medgenPMjournal">Biochem Genet</span>
2018 Apr;56(1-2):7-21.
Epub 2017 Nov 1
doi: 10.1007/s10528-017-9825-6.
<span class="bold">PMID: </span><a href="/pubmed/29094226" target="_blank">29094226</a></div>
<div class="nl"><a target="_blank" href="/pubmed/20690080">Citrullinemia type I: molecular screening of the ASS1 gene by exonic sequencing and targeted mutation analysis.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Marquis-Nicholson R,
Glamuzina E,
Prosser D,
Wilson C,
Love DR</span><br />
<span class="medgenPMjournal">Genet Mol Res</span>
2010 Aug 3;9(3):1483-9.
doi: 10.4238/vol9-3gmr834.
<span class="bold">PMID: </span><a href="/pubmed/20690080" target="_blank">20690080</a></div>
<div><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=%22Citrullinemia%20type%20I%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 (20)</a></div><h3 class="subhead">Therapy</h3>
<div class="nl"><a target="_blank" href="/pubmed/28888854">Quantitation of phenylbutyrate metabolites by UPLC-MS/MS demonstrates inverse correlation of phenylacetate:phenylacetylglutamine ratio with plasma glutamine levels.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Jiang Y,
Almannai M,
Sutton VR,
Sun Q,
Elsea SH</span><br />
<span class="medgenPMjournal">Mol Genet Metab</span>
2017 Nov;122(3):39-45.
Epub 2017 Aug 31
doi: 10.1016/j.ymgme.2017.08.011.
<span class="bold">PMID: </span><a href="/pubmed/28888854" target="_blank">28888854</a></div>
<div class="nl"><a target="_blank" href="/pubmed/27555199">General anesthesia in a patient with citrullinemia using Precedex as an adjunct to prevent delayed emergence.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Patel H,
Kim J,
Huncke TK</span><br />
<span class="medgenPMjournal">J Clin Anesth</span>
2016 Sep;33:403-5.
Epub 2016 Jun 2
doi: 10.1016/j.jclinane.2016.04.045.
<span class="bold">PMID: </span><a href="/pubmed/27555199" target="_blank">27555199</a></div>
<div class="nl"><a target="_blank" href="/pubmed/20852933">Metabolic investigations prevent liver transplantation in two young children with citrullinemia type I.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">de Groot MJ,
Cuppen M,
Eling M,
Verheijen FW,
Rings EH,
Reijngoud DJ,
de Vries MM,
van Spronsen FJ</span><br />
<span class="medgenPMjournal">J Inherit Metab Dis</span>
2010 Dec;33 Suppl 3(Suppl 3):S413-6.
Epub 2010 Sep 18
doi: 10.1007/s10545-010-9207-2.
<span class="bold">PMID: </span><a href="/pubmed/20852933" target="_blank">20852933</a><a href="/pmc/articles/PMC3757263" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=%22Citrullinemia%20type%20I%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 (3)</a></div><h3 class="subhead">Prognosis</h3>
<div class="nl"><a target="_blank" href="/pubmed/38858597">ASS1 metabolically contributes to the nuclear and cytosolic p53-mediated DNA damage response.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Lim LQJ,
Adler L,
Hajaj E,
Soria LR,
Perry RB,
Darzi N,
Brody R,
Furth N,
Lichtenstein M,
Bab-Dinitz E,
Porat Z,
Melman T,
Brandis A,
Malitsky S,
Itkin M,
Aylon Y,
Ben-Dor S,
Orr I,
Pri-Or A,
Seger R,
Shaul Y,
Ruppin E,
Oren M,
Perez M,
Meier J,
Brunetti-Pierri N,
Shema E,
Ulitsky I,
Erez A</span><br />
<span class="medgenPMjournal">Nat Metab</span>
2024 Jul;6(7):1294-1309.
Epub 2024 Jun 10
doi: 10.1038/s42255-024-01060-5.
<span class="bold">PMID: </span><a href="/pubmed/38858597" target="_blank">38858597</a><a href="/pmc/articles/PMC11272581" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div class="nl"><a target="_blank" href="/pubmed/33617202">Outcome of Liver Transplantation for Neonatal-onset Citrullinemia Type I.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Liu Y,
Luo Y,
Xia L,
Qiu B,
Zhou T,
Feng M,
Wang C,
Xue F,
Chen X,
Han L,
Zhang J,
Xia Q</span><br />
<span class="medgenPMjournal">Transplantation</span>
2021 Mar 1;105(3):569-576.
doi: 10.1097/TP.0000000000003261.
<span class="bold">PMID: </span><a href="/pubmed/33617202" target="_blank">33617202</a></div>
<div class="nl"><a target="_blank" href="/pubmed/31208364">Citrullinemia type I is associated with a novel splicing variant, c.773 + 4A &gt; C, in ASS1: a case report and literature review.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Lin Y,
Gao H,
Lu B,
Zhou S,
Zheng T,
Lin W,
Zhu L,
Jiang M,
Fu Q</span><br />
<span class="medgenPMjournal">BMC Med Genet</span>
2019 Jun 17;20(1):110.
doi: 10.1186/s12881-019-0836-5.
<span class="bold">PMID: </span><a href="/pubmed/31208364" target="_blank">31208364</a><a href="/pmc/articles/PMC6580464" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div class="nl"><a target="_blank" href="/pubmed/25179242">Functional analysis of novel splicing and missense mutations identified in the ASS1 gene in classical citrullinemia patients.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Kimani JK,
Wei T,
Chol K,
Li Y,
Yu P,
Ye S,
Huang X,
Qi M</span><br />
<span class="medgenPMjournal">Clin Chim Acta</span>
2015 Jan 1;438:323-9.
Epub 2014 Aug 30
doi: 10.1016/j.cca.2014.08.028.
<span class="bold">PMID: </span><a href="/pubmed/25179242" target="_blank">25179242</a></div>
<div class="nl"><a target="_blank" href="/pubmed/20690080">Citrullinemia type I: molecular screening of the ASS1 gene by exonic sequencing and targeted mutation analysis.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Marquis-Nicholson R,
Glamuzina E,
Prosser D,
Wilson C,
Love DR</span><br />
<span class="medgenPMjournal">Genet Mol Res</span>
2010 Aug 3;9(3):1483-9.
doi: 10.4238/vol9-3gmr834.
<span class="bold">PMID: </span><a href="/pubmed/20690080" target="_blank">20690080</a></div>
<div><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=%22Citrullinemia%20type%20I%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 (11)</a></div><h3 class="subhead">Clinical prediction guides</h3>
<div class="nl"><a target="_blank" href="/pubmed/34606567">Anesthetic Management of a Patient With Citrullinemia Type I During Dental Treatment.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Shibuya M,
Iwamoto R,
Kimura Y,
Kamekura N,
Fujisawa T</span><br />
<span class="medgenPMjournal">Anesth Prog</span>
2021 Oct 1;68(3):158-162.
doi: 10.2344/anpr-68-02-04.
<span class="bold">PMID: </span><a href="/pubmed/34606567" target="_blank">34606567</a><a href="/pmc/articles/PMC8500320" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div class="nl"><a target="_blank" href="/pubmed/31208364">Citrullinemia type I is associated with a novel splicing variant, c.773 + 4A &gt; C, in ASS1: a case report and literature review.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Lin Y,
Gao H,
Lu B,
Zhou S,
Zheng T,
Lin W,
Zhu L,
Jiang M,
Fu Q</span><br />
<span class="medgenPMjournal">BMC Med Genet</span>
2019 Jun 17;20(1):110.
doi: 10.1186/s12881-019-0836-5.
<span class="bold">PMID: </span><a href="/pubmed/31208364" target="_blank">31208364</a><a href="/pmc/articles/PMC6580464" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div class="nl"><a target="_blank" href="/pubmed/29423830">Biochemical markers and neuropsychological functioning in distal urea cycle disorders.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Waisbren SE,
Cuthbertson D,
Burgard P,
Holbert A,
McCarter R,
Cederbaum S;
Members of the Urea Cycle Disorders Consortium</span><br />
<span class="medgenPMjournal">J Inherit Metab Dis</span>
2018 Jul;41(4):657-667.
Epub 2018 Feb 8
doi: 10.1007/s10545-017-0132-5.
<span class="bold">PMID: </span><a href="/pubmed/29423830" target="_blank">29423830</a><a href="/pmc/articles/PMC6041144" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div class="nl"><a target="_blank" href="/pubmed/28888854">Quantitation of phenylbutyrate metabolites by UPLC-MS/MS demonstrates inverse correlation of phenylacetate:phenylacetylglutamine ratio with plasma glutamine levels.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Jiang Y,
Almannai M,
Sutton VR,
Sun Q,
Elsea SH</span><br />
<span class="medgenPMjournal">Mol Genet Metab</span>
2017 Nov;122(3):39-45.
Epub 2017 Aug 31
doi: 10.1016/j.ymgme.2017.08.011.
<span class="bold">PMID: </span><a href="/pubmed/28888854" target="_blank">28888854</a></div>
<div class="nl"><a target="_blank" href="/pubmed/20852933">Metabolic investigations prevent liver transplantation in two young children with citrullinemia type I.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">de Groot MJ,
Cuppen M,
Eling M,
Verheijen FW,
Rings EH,
Reijngoud DJ,
de Vries MM,
van Spronsen FJ</span><br />
<span class="medgenPMjournal">J Inherit Metab Dis</span>
2010 Dec;33 Suppl 3(Suppl 3):S413-6.
Epub 2010 Sep 18
doi: 10.1007/s10545-010-9207-2.
<span class="bold">PMID: </span><a href="/pubmed/20852933" target="_blank">20852933</a><a href="/pmc/articles/PMC3757263" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=%22Citrullinemia%20type%20I%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 (8)</a></div></div>
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<div class="portlet_content ln"><ul><li><a href="/gtr/tests?term=C4721769%5bDISCUI%5d&amp;filter=method%3A1%5F1" target="_blank">Analyte (5)</a></li>
<li><a href="/gtr/tests?term=C4721769%5bDISCUI%5d&amp;filter=method%3A2%5F8" target="_blank">Deletion/duplication analysis (38)</a></li>
<li><a href="/gtr/tests?term=C4721769%5bDISCUI%5d&amp;filter=method%3A1%5F2" target="_blank">Enzyme assay (5)</a></li>
<li><a href="/gtr/tests?term=C4721769%5bDISCUI%5d&amp;filter=method%3A2%5F17" target="_blank">Mutation scanning of the entire coding region (1)</a></li>
<li><a href="/gtr/tests?term=C4721769%5bDISCUI%5d&amp;filter=method%3A2%5F9" target="_blank">Sequence analysis of select exons (15)</a></li>
<li><a href="/gtr/tests?term=C4721769%5bDISCUI%5d&amp;filter=method%3A2%5F7" target="_blank">Sequence analysis of the entire coding region (63)</a></li>
<li><a href="/gtr/tests?term=C4721769%5bDISCUI%5d&amp;filter=method%3A2%5F19" target="_blank">Targeted variant analysis (19)</a></li>
<li class="portletSeeAll portletSeeAllPad"><total><a href="/gtr/tests?term=C4721769%5bDISCUI%5d" target="_blank">See all (77)</a></total></li>
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<div class="portlet_content ln"><ul><li><a href="https://www.omim.org/search?index=entry&amp;start=1&amp;limit=10&amp;sort=score%20desc&amp;field=number&amp;search=215700" target="_blank">OMIM</a></li><li><a href="http://www.orpha.net/consor/cgi-bin/OC_Exp.php?Expert=247525" target="_blank">Orphanet</a></li><li><a href="https://clinicaltrials.gov/search?cond=Citrullinemia%20type%20I" target="_blank">ClinicalTrials.gov</a></li></ul></div>
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<div class="portlet_head mgSectionHead ui-widget-header"><h1 class="nl" id="Practice_guidelines">Practice guidelines</h1><a sid="121" href="#" class="portlet_shutter" title="Show/hide content"></a></div>
<div class="portlet_content ln"><ul class="a_poppers"><li><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=(%22citrullinemia%20type%20i%22%5Btiab%3A~0%5D)%20AND%20(%22english%20and%20humans%22%5BFilter%5D)%20AND%20(%20(%22practice%20guideline%22%5BFilter%5D)%20OR%20(practice*%5Btitl%5D%20AND%20(guideline%5Btitl%5D%20OR%20parameter%5Btitl%5D%20OR%20resource%5Btitl%5D%20OR%20bulletin%5Btitl%5D%20OR%20best%5Btitl%5D))%20OR%20(genetic*%5Btitl%5D%20AND%20(evaluation%5Btitl%5D%20OR%20counseling%5Btitl%5D%20OR%20screening%5Btitl%5D%20OR%20test*%5Btitl%5D))%20OR%20(clinical%5Btitl%5D%20AND%20((expert%5Btitl%5D%20AND%20consensus%5Btitl%5D)%20OR%20utility%5Btitl%5D%20OR%20guideline*%5Btitl%5D))%20OR%20(management%5Btitl%5D%20AND%20(clinical%5Btitl%5D%20OR%20diagnos*%5Btitl%5D%20OR%20recommendation%5Btitl%5D%20OR%20pain%5Btitl%5D%20OR%20surveillance%5Btitl%5D%20OR%20emergency%5Btitl%5D%20OR%20guideline*%5Btitl%5D%20OR%20therap*))%20OR%20(treatment%5Btitl%5D%20AND%20((evaluation%5Btitl%5D%20AND%20diagnosis%5Btitl%5D)%20OR%20(assessment%5Btitl%5D%20AND%20prevention%5Btitl%5D)%20OR%20therap*))%20OR%20(Diagnos*%5Btitl%5D%20AND%20(prenatal%5Btitl%5D%20OR%20treatment%5Btitl%5D%20OR%20follow-up%5Btitl%5D%20OR%20statement%5Btitl%5D%20OR%20criteria%5Btitl%5D%20OR%20newborn%5Btitl%5D%20OR%20differential%5Btitl%5D%20OR%20neonatal%5Btitl%5D%20OR%20neonate%5Btitl%5D))%20OR%20(guideline*%5Btitl%5D%20AND%20(pharmacogenetic*%5Btitl%5D%20OR%20recommendation%5Btitl%5D%20OR%20therap*%5Btitl%5D%20OR%20evidence-based%5Btitl%5D%20OR%20consensus%5Btitl%5D%20OR%20(technical%5Btitl%5D%20AND%20standard*%5Btitl%5D)%20OR%20(molecular%5Btitl%5D%20AND%20testing%5Btitl%5D)))%20OR%20(risk%5Btitl%5D%20AND%20assessment%5Btitl%5D)%20OR%20(recommendation*%5Btitl%5D%20AND%20(statement%5Btitl%5D%20OR%20Evidence-based%5Btitl%5D%20OR%20Consensus%5Btitl%5D))%20OR%20(care%20AND%20((Patient%5Btitl%5D%20AND%20standard*%5Btitl%5D)%20OR%20primary%5Btitl%5D%20OR%20psychosocial%5Btitl%5D))%20OR%20(Health%5Btitl%5D%20AND%20supervision%5Btitl%5D)%20OR%20(statement%5Btitl%5D%20AND%20(policy%5Btitl%5D%20OR%20position%5Btitl%5D%20OR%20Consensus%5Btitl%5D))%20OR%20(pharmacogenetics%5Btitl%5D%20AND%20(Dosing%5Btitl%5D%20OR%20therap*%5Btitl%5D%20OR%20genotype*%5Btitl%5D%20OR%20drug*%5Btitl%5D))%20OR%20(Chemotherapy%5Btitl%5D%20AND%20decision*%5Btitl%5D)%20OR%20(screening%5Btitl%5D%20AND%20(newborn%5Btitl%5D%20OR%20neonat*%5Btitl%5D%20OR%20detection%5Btitl%5D%20OR%20diagnos*%5Btitl%5D))%20OR%20(criteria%5Btitl%5D%20OR%20genotype*%5Btitl%5D)%20)%20NOT%20(%22Case%20reports%22%5BPublication%20type%5D%20OR%20%22clinical%20study%22%5BPublication%20Type%5D%20OR%20%22randomized%20controlled%20trial%22%5BPublication%20Type%5D)" title="PubMed search">PubMed</a><div class="help-popup">See practice and clinical guidelines in PubMed. The search results may include broader topics and may not capture all published guidelines. See the <a href="/medgen/docs/faq/" title="Frequently asked questions" target="_blank">FAQ</a> for details.</div></li><li><a target="_blank" href="/books/?term=((%22clinical%20guidelines%22%5BResource%20Type%5D)%20OR%20%22practice%20guideline%22%5BPublication%20Type%5D)%20AND%20(%22Citrullinemia%20type%20I%22)">Bookshelf</a><div class="help-popup">See practice and clinical guidelines in NCBI Bookshelf. The search results may include broader topics and may not capture all published guidelines. See the <a href="/medgen/docs/faq/" title="Frequently asked questions" target="_blank">FAQ</a> for details.</div></li></ul><h3 class="subhead">Curated</h3><ul class="a_poppers"><li><a target="_blank" href="https://www.acmg.net/PDFLibrary/Citrullinemia.pdf">ACMG, ACT Sheet, 2022</a><div>American College of Medical Genetics and Genomics, Newborn Screening ACT Sheet, [Elevated Citrulline], Amino Acidemia/Urea Cycle Disorder, 2022</div></li><li><a target="_blank" href="https://www.acmg.net/PDFLibrary/Citrulline-Algorithm.pdf">ACMG Algorithm, 2022</a><div>American College of Medical Genetics and Genomics, Elevated Citrulline: Amino Acidemia Algorithm, 2022</div></li><li><a target="_blank" href="https://www.acmg.net/PDFLibrary/Citrullinemia-I-Transition.pdf">ACMG ACT, 2012</a><div>American College of Medical Genetics and Genomics, Transition to Adult Health Care ACT Sheet, Citrullinemia I, Urea Cycle Disorder, 2012</div></li></ul></div>
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<div class="portlet_head mgSectionHead ui-widget-header"><h1 class="nl" id="Molecular_resources">Molecular resources</h1><a sid="115" href="#" class="portlet_shutter" title="Show/hide content"></a></div>
<div class="portlet_content ln"><ul><li><a href="http://www.omim.org/search?index=entry&amp;start=1&amp;limit=10&amp;sort=score%20desc&amp;field=number&amp;search=603470" target="_blank">OMIM</a></li><li><a href="/clinvar/?term=445[geneid]" target="_blank">View ASS1 variations in ClinVar</a></li><li><a href="/nuccore/224809493" target="_blank">RefSeqGene</a></li><li><a href="https://catalog.coriell.org/Search?q=215700" target="_blank">Coriell Institute for Medical Research</a></li></ul></div>
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<div class="portlet_head mgSectionHead ui-widget-header"><h1 class="nl" id="Consumer_resources">Consumer resources</h1><a sid="116" href="#" class="portlet_shutter" title="Show/hide content"></a></div>
<div class="portlet_content ln"><ul><li><a href="http://www.diseaseinfosearch.org/Citrullinemia+Type+I/1651" target="_blank">Genetic Alliance</a></li><li><a href="https://www.malacards.org/card/citrullinemia_classic" target="_blank">MalaCards</a></li><li><a href="https://vsearch.nlm.nih.gov/vivisimo/cgi-bin/query-meta?v:project=medlineplus&amp;query=Citrullinemia%20type%20I" target="_blank">MedlinePlus</a></li><li><a href="https://medlineplus.gov/genetics/condition/citrullinemia" target="_blank">MedlinePlusGenetics (GHR)</a></li><li><a href="https://rarediseases.info.nih.gov/diseases/6114/disease" target="_blank">NCATS Office of Rare Diseases Research (GARD)</a></li></ul></div>
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<h3>Reviews</h3>
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