Genotyping of CYP21A2 for congenital adrenal hyperplasia screening using allele-specific primer extension followed by bead array hybridization.

Abstract excerpt

BACKGROUND: Congenital adrenal hyperplasia (CAH) is an autosomal recessive disease caused by mutations in the CYP21A2 gene, which codes for steroid 21-hydroxylase. More than 90% of patients with CAH have mutations in CYP21A2 or have large deletions in the RCCX module on chromosome 6p21.3, which also includes the pseudogene CYP21A1P. Genotyping of CYP21A2 is required for diagnosis of CAH, but current genotyping...

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