Analysis of the chimeric CYP21P/CYP21 gene in steroid 21-hydroxylase deficiency.

Abstract

BACKGROUND A single nonfunctional chimeric gene with its 5' and 3' ends corresponding to CYP21P and CYP21, respectively, is caused by unequal gene crossover in the CYP21 genes during meiosis. The presence of the chimeric CYP21P/CYP21 molecule can not be detected by conventional PCR methods and therefore may be lost in PCR amplification. This leads to a… (More)

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