Phenylketonuria: Giving treatment a second chance
Phenylketonuria (PKU) was once a common cause of intellectual disability. Children born with this metabolic condition lack phenylalanine hydroxylase (PAH), the enzyme needed to break down the amino acid phenylalanine (phe). Instead, phe builds up to levels harmful to the brain. PKU was the original condition tested for when newborn screening was piloted in Massachusetts ... Read More