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Omeros (OMER) investor relations material

Omeros FDA Announcement summary

Complete event summary combining all related documents: earnings call transcript, report, and slide presentation.
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FDA Announcement summary7 Jan, 2026

Introduction and purpose

  • YARTEMLEA received FDA approval on December 23, 2025, as the first and only therapy for hematopoietic stem cell transplant-associated thrombotic microangiopathy (TA-TMA) in adults and children aged two and older.

  • The approval addresses a significant unmet need for a life-threatening complication in stem cell transplant recipients, previously managed only with supportive care.

Details of approval or decision

  • YARTEMLEA is approved for all TA-TMA patients, both standard and high risk, including adults and children aged two and older, with no box warning, REMS, or vaccination requirement.

  • Approval was based on a 28-patient pivotal trial and a 221-patient expanded access program.

  • Dedicated billing and reimbursement codes have been established, and a U.S. product launch is planned for January 2026.

  • A marketing authorization application is under review by the European Medicines Agency, with a decision expected mid-2026.

Impact on industry and stakeholders

  • The launch is expected to shift the standard of care for TA-TMA, especially in pediatric patients, with early adoption focused on high-volume transplant centers.

  • A new ICD-10 code and two CPT codes have been established, supporting reimbursement and limiting off-label therapy use.

  • Providers and patients will have access to the YARTEMLEAssist™ support program in Q1 2026.

  • The ex-U.S. opportunity is substantial, with a pending EMA application and partnership evaluations underway.

Detail YARTEMLEAssist program's financial support
How does MASP-2 inhibition preserve host defense?
What factors could delay EMA approval?
How will NTAP timing affect early YARTEMLEA uptake?
Strategy to displace off-label C5 inhibitor use
How to increase TA-TMA diagnosis rates?
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Frequently asked questions

Omeros Corp is a biopharmaceutical company focused on developing and commercializing small-molecule and protein therapeutics. The company's research is centered on treatments for inflammation, immune disorders, and central nervous system conditions. Omeros also explores therapies targeting complement-mediated diseases, aiming to address various unmet medical needs. Its pipeline includes both clinical-stage and preclinical programs, with a focus on advancing innovative therapies that modulate key biological pathways involved in immune and inflammatory responses. The company is headquartered in Seattle, Washington, and its shares are listed on the NASDAQ.

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