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  1. Ornithine Transcarbamylase Deficiency - Children's Hospital of Philadelphia

    Ornithine transcarbamylase deficiency is a rare genetic condition that causes ammonia to build up in the blood. The condition – more commonly called OTC deficiency – is more common in boys than girls …

  2. OTC (Ornithine Transcarbamylase) Deficiency Symptoms & Causes

    Apr 29, 2025 · Overview What is OTC deficiency? OTC deficiency is when your liver can’t make enough of an enzyme called ornithine transcarbamylase (OTC). OTC is key for removing ammonia from your …

  3. Ornithine Transcarbamylase Deficiency - GeneReviews® - NCBI Bookshelf

    Aug 29, 2013 · Ornithine transcarbamylase (OTC) deficiency can occur as a severe neonatal-onset disease in males (but rarely in females) and as a post-neonatal-onset (also known as "late-onset" or …

  4. Ornithine transcarbamylase deficiency - Wikipedia

    OTC deficiency is inherited in an X-linked recessive manner, meaning males are more commonly affected than females. In severely affected individuals, ammonia concentrations increase rapidly …

  5. Ornithine transcarbamylase deficiency: MedlinePlus Genetics

    Ornithine transcarbamylase deficiency is an inherited disorder that causes ammonia to accumulate in the blood. Ammonia, which is formed when proteins are broken down in the body, is toxic if the levels …

  6. Ornithine Transcarbamylase (OTC) Deficiency - Boston Children's Hospital

    OTC deficiency is caused by mutations in the gene encoding the ornithine transcarbamylase (OTC) enzyme. This enzyme is responsible for detoxification of the ammonia that forms when proteins are …

  7. Ornithine Transcarbamylase Deficiency | Newborn Screening

    Find information about newborn screening for Ornithine transcarbamylase deficiency, including causes, signs, symptoms, and treatment.

  8. Ornithine Transcarbamylase Deficiency (OTC Deficiency)

    This acute illness protocol is a guideline for healthcare professionals treating the sick infant or child who is known to have ornithine transcarbamylase deficiency (OTC deficiency).

  9. What Is OTC Deficiency? Causes, Symptoms, and Treatment

    Nov 26, 2025 · Ornithine Transcarbamylase (OTC) Deficiency is a rare, inherited metabolic disorder that affects the body’s ability to process nitrogenous waste. It is the most frequently occurring of the …

  10. Ornithine Transcarbamylase Deficiency

    Jul 17, 2025 · Ornithine transcarbamylase (OTC) deficiency is a rare X-linked genetic disorder characterized by complete or partial lack of the enzyme ornithine transcarbamylase (OTC). OTC is …