[CTG-repeat analysis of myotonin protein kinase gene in Bashkortostan patients with myotonic dystrophy].
2002
: A DNA analysis of 72 patients from Bashkortostan clinically diagnosed with myotonic dystrophy and 54 their family members was conducted. CTG-repeat expansion in the myotonin proteinkinase gene was found in 67 (92%) patients and 12 their relatives without clinical symptoms of the disease at the moment of examination. A correlation between the most distinct clinical symptoms and CTG-repeat number has been studied. A CTG-repeat expansion in generations was compared to that in sib pairs with myotonic dystrophy. In 17.6% of the cases, CTG-repeat number decreased in the following generations and in 11.7% it did not change, the percentages being higher than those described elsewhere. In general, anticipation phenomenon was confirmed for CTG-repeat in myotonin proteinkinase gene.
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