Article
Fragile X syndrome and deletions in FMR1: new case and review of the literature.
American journal of medical genetics - 12 Nov 1997
Hammond L S, Macias M M, Tarleton J C, Shashidhar Pai G
Abstract excerpt
The fragile X syndrome phenotype of mental retardation is almost always caused by abnormal CGG trinucleotide amplification within the FMR1 gene. Occasionally fragile X syndrome results from point mutations or deletions within or around the FMR1 locus. We have identified a mentally retarded African American male with typical fragile X phenotype and a 300-400 base pair intragenic deletion near the CGG repeat...
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