An exon 1 deletion in OTC identified using chromosomal microarray analysis in a mother and her two affected deceased newborns: implications for the prenatal diagnosis of ornithine transcarbamylase deficiency.

Abstract excerpt

We describe the outcome of two consecutive pregnancies with a clinical presentation of ornithine transcarbamylase (OTC) deficiency (OTCD) without a molecular diagnosis. A 119kb deletion on Xp11.4 including the OTC gene was detected in the mother. The same deletion was identified in the blood spots from deceased male newborns. In patients with a clinical and biochemical presentation of OTCD and negative OTC...

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