Intra-familiar discordant PKU phenotype explained by mutation analysis in three pedigrees.
Clin Biochem
; 47(3): 233-5, 2014 Feb.
Article
em En
| MEDLINE
| ID: mdl-24296287
ABSTRACT
Classical phenylketonuria (PKU) and mild hyperphenylalaninemia (MHP) are two phenotypes of phenylalanine hydroxylase (PAH) deficiency with different degrees of severity. We have analyzed three families in which classical PKU, MHP and a normal phenotype occurred within each family due to the different combinations of three mutations segregating within the family. Indeed, sequence PAH analysis revealed three different alleles segregating in each family. This report suggests that when discordant phenotypes occur in a family, complete analysis of the PAH gene may be performed in order to support the diagnosis and assist in accurate genetic counseling and patient management. We further support the marked heterogeneity of hyperphenylalaninemia primarily due to allelic heterogeneity at the PAH locus.
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Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Linhagem
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Fenótipo
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Fenilalanina Hidroxilase
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Fenilcetonúrias
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Família
Limite:
Adult
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Female
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Humans
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Male
Idioma:
En
Ano de publicação:
2014
Tipo de documento:
Article