Ornithine carbamoyltransferase deficiency
MONDO:0010703Ornithine transcarbamylase deficiency (OTCD) is a disorder of urea cycle metabolism and ammonia detoxification characterized by either a severe, neonatal-onset disease found almost exclusively in males, or later-onset (partial) forms of the disease. Both present with episodes of hyperammonemia that can be fatal and which can lead to neurological complications.
Also known as: OCT deficiency, OTC deficiency, OTCD, ornithine carbamoyltransferase deficiency, ornithine carbamoyltransferase deficiency disease, ornithine transcarbamylase deficiency, ornithine transcarbamylase deficiency, hyperammonemia due to, valproate sensitivity
17 clinical trials for this condition and its sub-types.
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Gene therapy aims to tame rare metabolic disorder
Disease control OngoingThis Phase 3 trial tests a gene therapy called DTX301 for people with late-onset OTC deficiency, a rare genetic disorder that causes dangerous ammonia buildup. The study involves 37 participants and compares the gene therapy to a placebo. The goal is to see if the treatment can h…
Phase: PHASE3 • Sponsor: Ultragenyx Pharmaceutical Inc • Aim: Disease control
Last updated Jun 27, 2026 13:01 UTC
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Gene therapy for rare liver disease: Long-Term safety check
Disease control OngoingThis study follows 11 adults with late-onset OTC deficiency who received a single dose of gene therapy (DTX301) in an earlier trial. Researchers are checking long-term safety and how well the body makes urea and controls ammonia levels. The goal is to see if the treatment remains…
Sponsor: Ultragenyx Pharmaceutical Inc • Aim: Disease control
Last updated Jun 27, 2026 13:00 UTC
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New shot targets rare liver disorder in early human tests
Disease control OngoingThis early-stage study tests a new drug called CMP-CPS-001 in healthy adults and women who carry a gene for OTC deficiency, a rare liver condition that can cause dangerous ammonia buildup. The main goal is to check the drug's safety and how the body processes it. Participants rec…
Phase: PHASE1 • Sponsor: CAMP4 Therapeutics Corporation • Aim: Disease control
Last updated Jun 27, 2026 12:23 UTC
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Newborn screening study aims to catch rare diseases at birth
Diagnosis OngoingThis study offers voluntary screening for newborns in North Carolina to detect a wide range of rare health conditions early. Using a small blood sample already collected at birth, the program tests for dozens of disorders, including spinal muscular atrophy, cystic fibrosis, and m…
Sponsor: RTI International • Aim: Diagnosis
Last updated Jul 03, 2026 00:00 UTC
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New study aims to detect liver damage without needles
Knowledge-focused OngoingThis study looks at whether simple blood tests and special scans can detect liver scarring in people with urea cycle disorders. Researchers will enroll 62 participants across five U.S. centers. The goal is to find noninvasive ways to monitor liver health, avoiding the need for li…
Sponsor: Baylor College of Medicine • Aim: Knowledge-focused
Last updated Jun 27, 2026 12:25 UTC
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Gene study aims to solve wolfram syndrome mystery
Knowledge-focused OngoingThis study looks at 45 people with certain changes in the WFS1 gene to figure out if they have a milder, dominant form of wolfram-like syndrome instead of the more severe recessive form. Researchers will use eye scans (OCT) to see if the gene changes are linked to specific eye pr…
Sponsor: Hôpital Necker-Enfants Malades • Aim: Knowledge-focused
Last updated Jun 27, 2026 11:03 UTC