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The PKU Book: Phenylketonuria and Other Hyperphenylalaninemias

The PKU Book: Phenylketonuria and Other Hyperphenylalaninemias

Hardcover

Medical Reference

PREORDER - Expected ship date October 28, 2026

ISBN10: 3032266890
ISBN13: 9783032266897
Publisher: Springer
Published: Oct 28 2026
Pages: 534
Language: English
Phenylketonuria (PKU) is the most frequent inborn error of the amino acid metabolism (prevalence about 1:10,000 newborns). These autosomal-recessive inherited variants lead to deficiency in the PAH enzyme which hydroxylates phenylalanine to tyrosine, with the help of a cofactor (tetrahydrobiopterin; BH4), molecular oxygen, and non-heme iron. The metabolic picture is highly heterogenous as it depends on the degree of residual PAH activity and blood phenylalanine (Phe) concentrations. Untreated PKU generally results in global developmental delay or severe irreversible intellectual disability, as well as growth failure, hypopigmentation, motor deficits, ataxia, and seizures. The population of PKU-affected individuals is heterogeneous in terms of treatment history and diet compliance. Early diagnosis and treatment with a low-Phe diet has enabled an almost normal life for the majority of PKU subject. Pharmacological treatment with BH4 (sapropterin) and enzyme substitution therapy with Phe ammonia lyase (PAL) provide alternative treatment options for some PKU subjects. Several gene therapy trials are on the way.

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