Mental Retardation, X-Linked 53

Clinical Features

Ahmad et al. (2001) described a large Pakistani family with X-linked nonspecific mental retardation.

Mapping

By linkage analysis in a Pakistani family segregating nonsyndromic mental retardation, Ahmad et al. (2001) identified a novel disease locus, MRX53, located in a critical region spanning approximately 15 cM between DXS1210 and DXS1047 on Xq22.2-q26. A lod score of 3.34 at no recombination was obtained with markers DXS1072 and DXS8081.