Phenylalanine hydroxylase gene mutation R408W is present on 84% of Estonian phenylketonuria chromosomes.
Eur J Hum Genet
; 4(5): 296-300, 1996.
Article
in En
| MEDLINE
| ID: mdl-8946176
ABSTRACT
Phenylalanine hydroxylase (PAH) is the enzyme which converts phenylalanine into tyrosine. In case of its deficiency, hyperphenylalaninemia is observed, which leads to phenylketonuria (PKU), a disease causing mental retardation, unless treated with a low-phenylalanine diet since early childhood. In Estonia, PKU is among the most common inherited metabolic diseases. The data from retrospective study and newborn screening show an approximate incidence of 1 in 6,000 newborns. Molecular analysis of 34 Estonian patients has revealed high genotypic homogeneity in this group, as 84% of the mutant alleles carry the R408W mutation. The high rate of this mutation in the Estonian population rises the speculation of Finno-Ugric contribution to the East European pool of mutant PAH alleles. Five more mutations-IVS12nt1, R261Q, R252W, R158Q, S349P-have been detected. The mutation detection rate was 92% among the studied patients.
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Collection:
01-internacional
Database:
MEDLINE
Main subject:
Phenylalanine Hydroxylase
/
Phenylketonurias
/
Mutation
Type of study:
Diagnostic_studies
/
Observational_studies
/
Risk_factors_studies
Limits:
Humans
/
Newborn
Country/Region as subject:
Europa
Language:
En
Journal:
Eur J Hum Genet
Journal subject:
GENETICA MEDICA
Year:
1996
Type:
Article
Affiliation country:
Estonia