Screening for mutant variants of exons 5, 7, and 12 in the phenylalanine hydroxylase gene with the use of denaturing gradient gel-electrophoresis.

The assays were developed for the analysis of the most frequent in Ukraine PAH gene mutations (R158Q, R408W, Y414C, P281L, R252W, and R261Q) in PKU patients and in healthy individuals. These assays are applied with the use of the gradient denaturing gel-electrophoresis (DGGE) method. The study of a spectrum of the PAH gene mutations in exons 5, 7, and 12 was carried out with the use of the DGGE method and subsequent sequencing of the non-identified mutant variants. [ABSTRACT FROM AUTHOR]