Article
Preferential inactivation of a dupX(q23 --> q27-28) chromosome in a girl with mental retardation and dysmorphy.
Human heredity - 1 Jan 2001
Volleth M, Stumm M, Mohnike K, Kalscheuer V M, Jakubiczka S, Wieacker P
Abstract excerpt
We report on an 18-year-old female with de novo tandem duplication Xq23-->Xq27-28. The breakpoints of the duplication segment have been mapped by FISH using a panel of locus specific YACs. Despite selective inactivation of the aberrant X chromosome, proven by a combination of molecular and cytogenetic studies, the patient exhibits mental retardation, dysmorphic features and short stature. Possible mechanisms...
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