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A de novo phenylketonuria mutation: ATG (met) to ATA (ile) in the start codon of the phenylalanine hydroxylase gene

1992; Wiley; Volume: 1; Issue: 5 Linguagem: Inglês

10.1002/humu.1380010507

1098-1004

Hans Geir Eiken, Per M. Knappskog, Jaran Apold, Leif Skjelkvåle, Helge Boman,

Folate and B Vitamins Research

We here describe the detection of a de novo mutation in the phenylalanine hydroxylase gene in a Norwegian phenylketonuria (PKU) patient. This novel mutation, M1I, disrupts the start codon of the gene by a G to A transition. The compound heterozygote genotype (IVS-12/M1I) of this patient predicts that no phenylalanine hydroxylase enzyme is formed, thus leading to a severe classical PKU. Determination of haplotypes and DNA fingerprint patterns indicates a paternal origin of the de novo mutation. © 1992 Wiley-Liss, Inc.