YARTEMLEA® (narsoplimab-wuug) was approved by the FDA in December 2025.
YARTEMLEA is a fully human monoclonal antibody targeting mannan-binding lectin-associated serine protease-2 (MASP-2), the effector enzyme of the lectin pathway of complement. Importantly, inhibition of MASP-2 preserves the classical and alternative complement functions critical for defense against infection. Omeros is pursuing approval in Europe for narsoplimab to treat TA-TMA. To learn more, visit YARTEMLEA.com. To view full Prescribing Information, click here.
YARTEMLEA®
View our pipeline to learn about ongoing narsoplimab clinical studies
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