CYP21A2 and congenital adrenal hyperplasia: Of these, 12 patients (11.3% overall; 40% of CYP21A2-deleted cases) harbored contiguous deletions extending from CYP21A2 to TNXB exon 35, generating TNXA/TNXB chimeras (exons 1–34 of TNXB + exons 35–44 of TNXA) diagnostic of CAH-X CH-1.