Search results for "10qter deletion"

10qter deletion: A new case

2008

Vertebrate telomeres consist of tandem repeats of the TTAGGG sequence that cap the ends of chromosomes, protecting them from degradation and fusion. Extensive evidence has shown that telomere shortening and erosion lead lo chromo¬some end-to-end fusions and genomic instability, causing mental retardation and/or malformation syndromes. So far, over 19,000 patients with mental retardation have been tested and reported of whom -2.5% appeared to have a subtelomeric rearrange¬ment [Ravnan et al., 2006; Ballif et al., 2007; Ledbetter and Martin, 2007]. Since the identification of sub¬microscopic subtelomeric rearrangements as a major cause of mental retardation [Flint et al., 1995], testing for s…