Abstract:Ornithine transcarbamylase deficiency (OTCD) is the most common X-linked hereditary disorder of urea cycle disorders that is caused by neonatal hyperammonemia. OTC gene sequence variations are common causes of OTCD. The current study presents a 28-month-old baby girl proband with phenotypical characteristics of OTCD such as irritability, somnolence, intermittent vomiting, and high levels of serum ammonium. Whole-exome sequencing revealed a de novo c.275G > A p. (Arg92Gln) variant within the OTC gene. In silico… Show more
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