Incidence of PKU

The incidence of PKU or HPA is highest amongst Caucasians, occurring in approximately 1 in 10,000 births. PKU can be detected in newborn screening as performed in most Western countries, and early dietary treatment consisting of a low protein diet with Phe restriction can prevent the development of metabolic and pathological sequelae, including intellectual impairment.

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2423317/

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