Abstract
Thomsen’s (TM) and Becker’s (BM) myotonias are nondystrophic myotonias. At present, 150 mutations in the CLCN1 gene, which results in the development of TM and BM, have been described. The c.2680C>T (p.Arg894*) is the most common mutation. In the Northern Scandinavian countries, the population frequency of this mutation is 0.87%, while in the Russian Federation, it is equal to 1.2% (this study). Based on the results of a molecular-genetic analysis of CLCN1 gene in patients with nondystrophic myotonias, the calculated frequency of TM and BM in Russia is 1: 8165 and 1: 710, respectively. We have conducted haplotype analysis using microsatellite markers and intragene SNP, which has shown that the prevalence of p.Arg894* mutation in Russia results from the founder effect, and the time of its scattering is 3680 ± 1240 years.
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Original Russian Text © E.A. Ivanova, A.V. Polyakov, 2013, published in Genetika, 2013, Vol. 49, No. 12, pp. 1407–1415.
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Ivanova, E.A., Polyakov, A.V. Frequency and causes of prevalence of p.Arg894* mutation in CLCN1 gene responsible for development of thomsen’s and becker’s myotonias in russian population. Russ J Genet 49, 1227–1235 (2013). https://doi.org/10.1134/S1022795413090044
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DOI: https://doi.org/10.1134/S1022795413090044