Omeros Corporation announced that zaltenibart (OMS906) received rare pediatric disease designation from the FDA for treating complement 3 glomerulopathy (C3G), an ultra-rare renal disorder. Zaltenibart, an inhibitor of MASP-3, blocks the alternative pathway of complement, with Phase 3 trials planned for next year. The designation provides a priority review voucher upon approval, potentially accelerating market entry.