The PKU Book: Phenylketonuria and Other Hyperphenylalaninemias

di Blau - Vockley - MacDonald - van Spronsen • 2026 • dettagli prodotto

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Pubblicazione prevista per Luglio 2026

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DESCRIZIONE

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.
The book includes the latest advancements in the pathophysiology of PKU, which is still not fully understood, as well as its management with new therapeutic options.