Comparative genomic hybridization of a mother and daughter with a familial translocation t(2;6)(p25;p21) balanced in the mother and unbalanced in the daughter to determine breakpoint location and contribute to a map of haplotolerant genes
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ABSTRACT: A 244 K genome-wide array based comparative genomic hybridization study was carried out in a familial translocation t(2;6)(p25;p21) balanced in the mother (SDM) and unbalanced in her daughter (SD). In the past, this translocation has allowed to localize the HLA multigene cluster to chromosome 6. With microarray technology, confirmation of the chromosome localization of HLA system was easily obtained, showing that such approach may be applied to the breakpoint localizations of other familial structural changes when they are unbalanced. Of interest was the breakage of genes at the breakpoint localization, without any phenotypic consequence to the parent and allowing to constitute a map of « haplotolerant genes ». In addition, many genomic variants were detected with this technology, enlarging the possibility of analyzing their possible contribution to phenotypic diversity.
ORGANISM(S): Homo sapiens
DISEASE(S): multiple congenital malformation
SUBMITTER: Philippe Dessen
PROVIDER: E-TABM-308 | biostudies-arrayexpress |
REPOSITORIES: biostudies-arrayexpress
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