SOUTH SAN FRANCISCO, Calif.--(BUSINESS WIRE)--Genentech, a member of the Roche Group (SIX: RO, ROG; OTCQX: RHHBY), today announced that the U.S. Food and Drug Administration (FDA) has approved a label extension for Evrysdi® (risdiplam) to include babies under two months old with spinal muscular atrophy (SMA). The approval is based...