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- Title
Molecular characterization of a ring X chromosome in a male with short stature.
- Authors
Ellison, Jay W.; Tekin, Mustafa; Sikes, Karen; Yankowitz, Jerry; Shapiro, Larry; Rappold, Gudrun A.; Neely, Kirk E.
- Abstract
We report the molecular characterization of a ring X chromosome that was transmitted from a mother to a male who has short stature and minor dysmorphic features. This represents only the second reported ring X chromosome in a male. The ring is derived from breakage within the Xp pseudoautosomal region (PAR) and just proximal to the Xq PAR. The total amount of deleted material is 700–900 kb DNA and includes six known transcribed genes. Interestingly, SHOX, a gene implicated in short stature, is not deleted from the ring chromosome. Possible pathogenetic explanations for the patient's clinical features include insufficient dosage of deleted genes, a position effect on SHOX expression, and cell death during development because of ring chromosome nondisjunction. The findings are also relevant to observations made of "complete" ring chromosomes.
- Subjects
X chromosome; SEX chromosomes; CHROMOSOMES; GENETICS; CELL nuclei
- Publication
Human Genetics, 2002, Vol 110, Issue 4, p322
- ISSN
0340-6717
- Publication type
Article
- DOI
10.1007/s00439-002-0685-7