Dagmar Procházková
The Key European Guidelines for the diagnosis and management of patients with phenylketonuria (PKU) were developed
to optimise PKU care. Diet is the cornerstone of treatment, although some patients can benefit from tetrahydrobiopterin
(BH4). No intervention is required if the blood phenylalanine concentration is less than 360μmol/l. Treatment
is recommended up to the age of 12 years if the phenylalanine blood concentrations is between 360-600μmol/l, and lifelong
treatment is recommended if the concentration is more than 600μmol/l. For women trying to conceive and during
pregnancy, untreated phenylalanine concentrations of more than 360μmol/l need to be reduced.
Treatment target concentrations are as follows: 120-360μmol/l for individuals aged 0-12 years and for maternal PKU,
and 120-600μmol/l for non-pregnant individuals older than 12 years.