Fresh from the Press: Pegvaliase (now called PalynzigTM) has been approved by the FDA for use in adult PKU patients in the USA with phenylalanine > 600 micromol/l. Francjan J van Spronsen, Maria Gizewska, Anita MacDonald, Kirsten Ahring Why is a different treatment needed? ‘You are not lucky when you have PKU’ I explained to a colleague. He replied “Why? What you’ve always told me is that when left untreated, patients with PKU have severe developmental disability, epilepsy, and difficult behavioural issues. Now they lead an almost normal life by following a diet. This does not seem too bad a …