JP-3 gene polymorphism in a healthy population of Serbia and Montenegro
2005
Expansions of CTG repeats in JP-3 gene are associated with a phenotype similar to Huntington disease. These expa nsions are the cause of Hun tington disease like-2 (HDL -2) phenotype. CTG repeats in JP-3 gene are polymorphic in healthy population. Analyses of CTG repeat polymorphism of JP-3 gene in various healthy populations could help in estimating the population at risk for developing HDL -2. CTG repeat polymorphism of JP-3 gene was analysed in healthy population of Serbia and Montenegro. Study included 198 unrelated subjec ts. Analyses of JP-3 locus were performed using PCR and sequencing. Six different JP-3 alleles were obtained and they were in the range of 11 to 18 CTG repeats showing a bimodal distribution, with peaks at 14 and 16. Results show that the distribution of JP-3 alleles in population of Serbia and Montenegro is consistent with distributions in other analysed populations. The absence of a lleles with more then 18 CTG repeats suggests that HDL-2 is very rare in the populations of Serbia and Montenegro.
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