[Polymorphism of the (CTG)n repeat in the myotonin protein kinase (DM) gene in Belarussian populations: analysis of interethnic heterogeneity].
The highly polymorphic CTG triplet repeat in the 3'-nontranscribed region of the myotonin protein kinase (DM) gene was studied in healthy people from three rural populations (Grodnenskii, Khoinikskii, and Nesvizhskii raions) and the town Bobruisk, Belarus. The allele frequency distribution of this repeat proved to be similar in all the regional groups of Belarussians.