Phenylalanine tolerance can already reliably be assessed at the age of 2 years in patients with PKU

Abstract excerpt

BACKGROUND: The clinical severity of phenylalanine hydroxylase deficiency is usually defined by either pre-treatment phenylalanine (Phe) concentration or Phe tolerance at 5 years of age. So far, little is known about the course of Phe tolerance or the ability of both pre-treatment Phe and Phe tolerance at early age to predict Phe tolerance at later age. AIM: This study was conducted to investigate the course of...

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