Immedica Pharma’s Loargys adds an enzyme-replacement entrant for ultra-rare ARG1-D–related hyperargininemia
On February 23, 2026, the FDA approved Loargys (pegzilarginase-nbln) from Immedica Pharma for hyperargininemia in adults and pediatric patients 2 years and older with Arginase 1 Deficiency, in conjunction with dietary protein restriction. ARG1-D affects an estimated 250 people in the U.S.A. Immedica Pharma’s CEO, Anders Edvell,