Mutation spectrum of the PAH gene in phenylketonuria patients in the Karachay-Cherkess Republic (Russia)

Mutation spectrum of the PAH gene in phenylketonuria patients in the Karachay-Cherkess Republic... A comprehensive population and medical-genetic study was carried out in ten districts and two cities in the Karachay-Cherkess Republic (Russia). As a result, 57 patients with phenylketonuria were revealed. PAH gene genotypes for 40 probands and their diseased and healthy relatives were determined. The mutation spectrum of the PAH gene in the Karachay-Cherkess Republic was investigated. The major mutation in this region is R261X with allelic frequency of 68.4%. We elaborated a convenient system for detection of six PAH gene mutations common in the Karachay-Cherkess Republic, with the total information content of the system being 89.9%. As a result of processing the clinical data, association of the diet and phenylalanine levels in the blood was verified. Genophenotypic analysis confirms the association of the residual activity of phenylalanine hydroxylase and the severity of the disease. It is shown that common mutation R261X is severe and that patients who are homozygous for this mutation have classical phenylketonuria (PKU). http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Genetics Springer Journals

Mutation spectrum of the PAH gene in phenylketonuria patients in the Karachay-Cherkess Republic (Russia)

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Publisher
Springer Journals
Copyright
Copyright © 2016 by Pleiades Publishing, Inc.
Subject
Biomedicine; Human Genetics; Animal Genetics and Genomics; Microbial Genetics and Genomics
ISSN
1022-7954
eISSN
1608-3369
D.O.I.
10.1134/S1022795416110041
Publisher site
See Article on Publisher Site

Abstract

A comprehensive population and medical-genetic study was carried out in ten districts and two cities in the Karachay-Cherkess Republic (Russia). As a result, 57 patients with phenylketonuria were revealed. PAH gene genotypes for 40 probands and their diseased and healthy relatives were determined. The mutation spectrum of the PAH gene in the Karachay-Cherkess Republic was investigated. The major mutation in this region is R261X with allelic frequency of 68.4%. We elaborated a convenient system for detection of six PAH gene mutations common in the Karachay-Cherkess Republic, with the total information content of the system being 89.9%. As a result of processing the clinical data, association of the diet and phenylalanine levels in the blood was verified. Genophenotypic analysis confirms the association of the residual activity of phenylalanine hydroxylase and the severity of the disease. It is shown that common mutation R261X is severe and that patients who are homozygous for this mutation have classical phenylketonuria (PKU).

Journal

Russian Journal of GeneticsSpringer Journals

Published: Dec 28, 2016

References

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