EMA panel issues negative opinion on Omeros narsoplimab application

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Omeros Corporation Announces Update on European Marketing Authorization Application for Narsoplimab in TA-TMA

June 26, 2026 8:30 AM EDT

SEATTLE--(BUSINESS WIRE)-- Omeros Corporation (Nasdaq: OMER) announced today an update on the review by the Committee for Medicinal Products for Human Use (CHMP) of the European Medicines Agency (EMA) of the companys marketing authorization application (MAA) for narsoplimab for the treatment of hematopoietic stem cell transplant-associated thrombotic microangiopathy (TA-TMA).

Following an oral explanation meeting with the CHMP held this week, at which Omeros presented its position together with four international experts in hematopoietic cell transplantation, Omeros was informed that the CHMP has adopted a negative opinion on the MAA... More