American Journal of Medical Genetics<. 43(1-2):373-82, 1992 Apr 15-May 1.
Istituto di Genetica Umana, Facolta di Medicina A. Gemelli, U.C.S.C., Roma, Italy.
Unique Identifier-92296170
Abstract
Up to now, we have identified 77 X-linked conditions in which mental retardation is the primary or a major component manifestation. These conditions were subdivided into 2 categories, designated respectively "X-linked mental retardation syndromes" and "Non-specific X-linked mental retardation". Forty genes have been regionally mapped onto the X chromosome. However, in several instances the data were derived from a single family and most lod scores were less than 3.0. [References: 37]