Argininosuccinic aciduria
MONDO:0008815Argininosuccinic aciduria (ASA) is a disorder of urea cycle metabolism most commonly characterized by either a severe, neonatal-onset form that manifests with hyperammonemia accompanied with vomiting, hypothermia, lethargy and poor feeding in the first few days of life, or late-onset forms (any age outside the newborn period) that manifest with stress or infection-induced episodic hyperammonemia or, in some, behavioral abnormalities and/or learning disabilities. Patients often manifest liver dysfunction.
Also known as: ASA deficiency, ASL deficiency, argininosuccinase deficiency, argininosuccinatelyase deficiency, argininosuccinic acid lyase deficiency, argininosuccinic aciduria, arginino succinase deficiency, argininosuccinate acidemia
29 clinical trials for this condition and its sub-types.
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Half-Matched stem cell transplant offers hope for children with rare immune and metabolic diseases
Disease control Recruiting nowThis study tests a new type of stem cell transplant for children with primary immune deficiencies or inherited metabolic disorders. The transplant uses stem cells from a half-matched family donor, which are specially processed to remove certain immune cells. The goal is to see if…
Phase: PHASE2 • Sponsor: Johns Hopkins All Children's Hospital • Aim: Disease control
Last updated Jul 03, 2026 00:00 UTC
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New bone marrow transplant trial offers hope for kids with severe blood disorders
Disease control Recruiting nowThis study tests a bone marrow transplant from a family donor for children under 21 with severe non-cancer blood disorders like sickle cell disease, bone marrow failure, or immune problems. The goal is to see if the transplant can replace the diseased cells with healthy donor cel…
Phase: PHASE1, PHASE2 • Sponsor: Washington University School of Medicine • Aim: Disease control
Last updated Jun 27, 2026 13:00 UTC
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New hope for kids with rare metabolic disease: 5-Year trial launches
Disease control Recruiting nowThis study is testing a drug called glycerol phenylbutyrate in 40 Chinese children with urea cycle disorders, a rare genetic condition that causes dangerous ammonia buildup. The drug aims to help control ammonia levels over 5 years. Researchers will monitor safety and effectivene…
Sponsor: Tongji Hospital • Aim: Disease control
Last updated Jun 27, 2026 12:25 UTC
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Half-Matched stem cells give bone marrow a jump start for High-Risk patients
Disease control AVAILABLEThis program offers extra stem cells from a half-matched family donor to patients who are getting a cord blood transplant for serious blood cancers or immune disorders. The goal is to help the bone marrow recover more quickly while the cord blood cells take over permanently. It i…
Sponsor: Joanne Kurtzberg, MD • Aim: Disease control
Last updated Jun 27, 2026 07:58 UTC
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Simple test could unlock better monitoring for rare metabolic disorders
Diagnosis Recruiting nowThis study is testing a new way to measure how well the urea cycle works in healthy people and in patients with urea cycle disorders (UCDs). Participants receive a safe, non-radioactive tracer, and blood samples are taken over a few hours. The goal is to develop a better tool for…
Phase: NA • Sponsor: University Children's Hospital, Zurich • Aim: Diagnosis
Last updated Jun 27, 2026 08:09 UTC
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NIH launches major study to unravel genetic metabolic mysteries
Knowledge-focused Recruiting nowThis study aims to better understand and treat people with certain inherited metabolic or genetic disorders. Researchers will use standard medical tests like blood work and imaging to diagnose and care for participants, who may also join other related studies. The goal is to expa…
Sponsor: National Human Genome Research Institute (NHGRI) • Aim: Knowledge-focused
Last updated Jul 03, 2026 23:00 UTC
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Gene hunt in children could unlock secrets of rare metabolic diseases
Knowledge-focused Recruiting nowThis study looks at children with suspected or confirmed genetic and metabolic disorders to find new disease-causing gene mutations. Researchers will analyze blood samples for DNA and metabolites, and in some cases take a small skin sample. The goal is to better understand these …
Sponsor: University of Texas Southwestern Medical Center • Aim: Knowledge-focused
Last updated Jul 03, 2026 23:00 UTC
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Do patients take their meds? new study aims to find out
Knowledge-focused Recruiting nowThis study at Necker Hospital in Paris is checking how well patients with inherited metabolic diseases follow their daily oral medication routines. About 200 patients (children aged 7 and up, teens, and adults) will fill out a questionnaire during a regular visit. The goal is to …
Sponsor: Assistance Publique - Hôpitaux de Paris • Aim: Knowledge-focused
Last updated Jul 02, 2026 00:00 UTC
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Massive study aims to unlock genetic secrets of childhood hormone disorders
Knowledge-focused Recruiting nowThis study enrolls up to 15,000 children with known or suspected endocrine or metabolic disorders, along with their family members. Researchers will collect medical records, blood, saliva, and other samples to identify genetic changes linked to these conditions. The goal is to be…
Sponsor: Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD) • Aim: Knowledge-focused
Last updated Jun 27, 2026 14:02 UTC
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Cleveland clinic launches massive biorepository to unlock secrets of heart disease
Knowledge-focused Recruiting nowThis study is creating a large collection of blood, urine, stool, and heart tissue samples from 10,000 people with and without heart or metabolic conditions. The goal is to store these samples along with medical information to speed up future research into what causes these disea…
Sponsor: The Cleveland Clinic • Aim: Knowledge-focused
Last updated Jun 27, 2026 14:02 UTC
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Can a simple tool give kids a voice in their own transplant care?
Knowledge-focused Recruiting nowThis study tests a new communication tool called 'Let's Get REAL' that helps children and teens (ages 8-17) and their families talk together about stem cell transplant or cellular therapy decisions. The goal is to see if the tool is easy to use and helpful for families. About 60 …
Phase: NA • Sponsor: Washington University School of Medicine • Aim: Knowledge-focused
Last updated Jun 27, 2026 13:02 UTC
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MRI study seeks brain clues in metabolic disease
Knowledge-focused Recruiting nowThis study uses MRI scans to look for brain differences in people with metabolic diseases compared to healthy volunteers. Researchers will track changes over time and link them to body fat and other health measures. About 126 adults will take part at Ulm University Hospital. No d…
Sponsor: University of Ulm • Aim: Knowledge-focused
Last updated Jun 27, 2026 09:04 UTC
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Do special diets cause eating disorders in kids? new study investigates
Knowledge-focused Recruiting nowThis study looks at how often young children (ages 1 to 6) with inherited metabolic diseases develop eating disorders when they are on special diets. Researchers will use a feeding scale to measure eating problems in 200 children. The goal is to understand the link between these …
Sponsor: Assistance Publique - Hôpitaux de Paris • Aim: Knowledge-focused
Last updated Jun 27, 2026 07:58 UTC
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10,000 volunteers join hunt for Aging's hidden clues
Knowledge-focused Recruiting nowThe SMILE study is tracking 10,000 adults aged 18 and older to see how sarcopenia (age-related muscle loss) and metabolic diseases like diabetes influence overall health and lifespan. Researchers will collect data from medical records, tests, and surveys over time. This is an obs…
Sponsor: RenJi Hospital • Aim: Knowledge-focused
Last updated Jun 27, 2026 07:53 UTC
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Can a High-Fat diet help kids with Tough-to-Treat conditions?
Knowledge-focused Recruiting nowThis study follows 100 children under 18 who are already on a ketogenic diet for conditions like drug-resistant epilepsy, autism, chronic migraine, or brain tumors. Researchers want to see if the diet supports healthy growth, improves symptoms, and boosts quality of life. The die…
Sponsor: Danone Nutricia SpA Società Benefit • Aim: Knowledge-focused
Last updated Jun 26, 2026 12:44 UTC