TNXB and congenital adrenal hyperplasia: More specifically, there exist 3 subtypes of CAH-X: a) CAH-X CH-1, associated with deletion of exon 35 of TNXB; b) CAH-X CH-2, caused by the c.12174 C>G (p.Cys4058Trp) variant in TNXB; and c) CAH-X CH-3, which is caused by a cluster of 3 variants.