Duplication of 11p14.3-p15.1 in a mentally retarded proband and his mother detected by G-banding and confirmed by high-resolution CGH and BAC FISH

Experimental and Molecular Pathology
H E WyandtJeff M Milunsky

Abstract

A 10-year-old African-American male has been followed since 2 years of age due to his mental retardation, severe behavioral problems, and dysmorphism. Conventional cytogenetic analysis, chromosome painting, high-resolution comparative genomic hybridization (HR-CGH), and bacterial artificial chromosome fluorescent in situ hybridization (BAC FISH) revealed an apparent duplication in the short arm of a chromosome 11, dup(11)(p14.3p15.1), seen also in his mentally retarded mother. The proband had moderate to severe mental retardation, a history of IUGR, infantile hypotonia, FTT, exotropia, inguinal hernia repair, and several dysmorphic features. His mother had mild mental retardation, a history of impulsivity, assaultive outbursts, and similar dysmorphism. Although G-banding and FISH indicated a duplication, HR-CGH confined the localization of material to bands 11p14-11p15 and aided the selection of locus-specific BAC clones to more precisely characterize the duplicated region. To our knowledge, the results represent the first example of a familial, cytogenetically visible duplication of euchromatin in 11p that excludes the Beckwith-Wiedemann syndrome critical region. It is possible that one or more genes had been disrupted at the ...Continue Reading

Citations

Mar 5, 2008·American Journal of Medical Genetics. Part B, Neuropsychiatric Genetics : the Official Publication of the International Society of Psychiatric Genetics·Lindsey KentEamonn R Maher
Mar 26, 2014·American Journal of Medical Genetics. Part a·Siv Fokstuen, Dieter Kotzot

❮ Previous
Next ❯

Related Concepts

Related Feeds

Artificial Chromosomes

Artificial chromosomes are genetically engineered chromosomes derived from the DNA of a species. Discover the latest research on artificial chromosomes here.