A member of a gene family on Xp22.3, VCX-A, is deleted in patients with X-linked nonspecific mental retardation.
Fukami M, Kirsch S, Schiller S, Richter A, Benes V, Franco B, Muroya K, Rao E, Merker S, Niesler B, et al. Am J Hum Genet. 2000 Sep; 67(3):563-73. Epub 2000 Jul 20.