Delineation of Subtelomeric Deletion of the Long Arm of Chromosome 6
- Authors
- Lee, Ji-Yun; Cho, Youl-Hee; Hallford, Gene
- Issue Date
- 11월-2011
- Publisher
- WILEY
- Keywords
- Array CGH; chromosome 6q; chromosome abnormality; FISH; subtelomeric deletion
- Citation
- ANNALS OF HUMAN GENETICS, v.75, pp.755 - 764
- Indexed
- SCIE
SCOPUS
- Journal Title
- ANNALS OF HUMAN GENETICS
- Volume
- 75
- Start Page
- 755
- End Page
- 764
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/111228
- DOI
- 10.1111/j.1469-1809.2011.00675.x
- ISSN
- 0003-4800
- Abstract
- Pure subtelomeric deletion of the long arm of chromosome 6 is rare. The frequency of this deletion accounts for approximately 0.05% of subjects with intellectual disability and developmental delay with or without dysmorphic features. Common phenotypes associated with this deletion include intellectual disability, developmental delay, dysmorphic features, seizure, hypotonia, microcephaly and hypoplasia of the corpus callosum. The smallest overlapped region is approximately 0.4 Mb, and contains three known genes. Of these genes, TBP has been considered as a plausible candidate gene for the phenotype in patients with a subtelomeric 6q deletion. Analysis of the breakpoints in 14 cases revealed a potential common breakpoint interval 8.0-9.0 Mb from the chromosome 6q terminus where the FRA6E fragile site exists and the PARK2 gene is located. This suggests that breakage at the FRA6E fragile site may be the mechanism behind chromosome 6q subtelomeric deletion in some of the cases.
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