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. 1993 Mar;30(3):232–234. doi: 10.1136/jmg.30.3.232

Genetic background of clinical homogeneity of phenylketonuria in Poland.

J Jaruzelska 1, R Matuszak 1, S Lyonnet 1, F Rey 1, J Rey 1, J Filipowicz 1, K Borski 1, A Munnich 1
PMCID: PMC1016306  PMID: 8097262

Abstract

In order to elucidate the clinical homogeneity and severity of the hyperphenylalaninaemias in Poland, a total of 71 children with typical phenylketonuria (PKU) originating from western and northern Poland were screened for 13 mutations in the phenylalanine hydroxylase (PAH) gene. Eighty percent of all PKU alleles tested were found to carry an identified mutation. One mutation, namely the R408W mutation, accounted for more than 63% of mutant PAH alleles in Poland, the other 27% being accounted for by six mutations: IVS12nt1 (5%), IVSnt546 (5%), Y414C (4%), R252W (1.5%), R261Q (< 1%), and G272ter (< 1%). The predominance of the R408W mutation resulted in a high rate of homozygotes (35.2%) and compound heterozygotes for this mutation in children from western and northern Poland. The frequency and deleterious nature of this mutation probably accounts for the clinical homogeneity and severity of the hyperphenylalaninaemias in Poland. In addition, the high rate of the R408W mutation and its association with mutant haplotype 2 at the PAH locus in Poland give additional support to the Balto-Slavic origin of this mutant gene.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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