I-SPY COVID Trial Sponsored by Quantum Leap Healthcare Collaborative Reports Assessment of Narsoplimab for Treatment of Critically Ill Patients With COVID-19
Neither futility nor graduation criteria were met in the analysis of the randomized population at the time the narsoplimab arm was terminated.
There were 91 patients randomized to the narsoplimab arm of the trial across 27 participating US sites. The 91 randomized patients were compared to the 116 patients concurrently randomized to the control arm. All patients received standard of care including dexamethasone and remdesivir. Bayesian statistics were prespecified and employed for analyses.
Per the treatment protocol, narsoplimab was to be administered as an intravenous infusion regimen: 4 mg/kg, given as a 30-minute intravenous infusion (up to a maximum of 370 mg per infusion) twice weekly for up to 4 weeks (i.e., a maximum of 9 doses) or until hospital discharge.
The study did not identify any new safety signals for narsoplimab in the setting of critically ill COVID-19 patients.
Narsoplimab was selected for inclusion in the I-SPY COVID Trial because of its demonstrated ability to inhibit complement activation, inflammation, and coagulation, the three components that characterize COVID-19. Specifically, it is a fully human IgG4 monoclonal antibody against MASP-2, the effector enzyme of the lectin pathway of complement. It inhibits the lectin pathway of complement activation, an early and potent driver of SARS COV-2-triggered inflammation, which, in severe disease, culminates in hypocomplementemia with increased secondary infection risk and in a devastating cytokine storm. Narsoplimab also acts as an anticoagulant by inhibiting the MASP-2-mediated coagulation without increasing bleeding risk.
The I-SPY COVID Trial is a collaboration between members of QLHC and pharmaceutical partners such as
About Quantum Leap Healthcare Collaborative
Quantum Leap Healthcare Collaborative is a 501C(3) charitable organization established in 2005 as a collaboration between medical researchers at
About the I-SPY COVID Trial
The I-SPY COVID Trial (Investigation of Serial Studies to Predict Your COVID Therapeutic Response with Biomarker Integration and Adaptive Learning) is an adaptive platform trial designed to increase trial efficiency by minimizing the number of participants and time required to evaluate experimental and/or repurposed drugs. The focus of the trial is to improve outcomes for severely-ill COVID-19 patients—those
Omeros is an innovative biopharmaceutical company committed to discovering, developing and commercializing small-molecule and protein therapeutics for large-market and orphan indications targeting immunologic disorders including complement-mediated diseases, cancers, and addictive and compulsive disorders. Omeros’ lead MASP-2 inhibitor narsoplimab targets the lectin pathway of complement and is the subject of a biologics license application (BLA) pending before FDA for the treatment of hematopoietic stem cell transplant-associated thrombotic microangiopathy (HSCT-TMA). Narsoplimab is also in multiple late-stage clinical development programs focused on other complement-mediated disorders, including IgA nephropathy, COVID-19, and atypical hemolytic uremic syndrome. Omeros’ long-acting MASP-2 inhibitor OMS1029 is currently in a Phase 1 clinical trial. OMS906, Omeros’ inhibitor of MASP-3, the key activator of the alternative pathway of complement, is advancing in clinical programs for paroxysmal nocturnal hemoglobinuria (PNH), complement 3 (C3) glomerulopathy and one or more related indications. For more information about Omeros and its programs, visit www.omeros.com.
Narsoplimab, also known as “OMS721,” is an investigational human monoclonal antibody targeting mannan-binding lectin-associated serine protease-2 (MASP-2), a novel pro-inflammatory protein target and the effector enzyme of the lectin pathway of complement. Importantly, inhibition of MASP-2 does not appear to interfere with the antibody-dependent classical complement activation pathway, which is a critical component of the acquired immune response to infection. A biologics license application (BLA) is pending before the
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