“Our teams have worked tirelessly the last seven months to discover and develop these potential antibody treatments,” said
Investors, media and the general public are invited to a conference call today at
Combination therapy clinical trial data
Data from a new interim analysis of the BLAZE-1 clinical trial showed that combination therapy with two of
The combination therapy significantly reduced viral load at day 11 (p=0.011), meeting the primary endpoint of the study. Most patients, including those receiving placebo, demonstrated near complete viral clearance by day 11. Further, combination treatment reduced viral levels at day 3 (p=0.016) and day 7 (p<0.001)—earlier time points during the course of infection when higher viral loads are typically seen. Combination therapy also significantly reduced the time-weighted average change from baseline from day 1 to 11. An exploratory analysis showed that the proportion of patients with persistent high viral load at day 7 for combination therapy was lower (3.0 percent) versus placebo (20.8 percent), corresponding to a nominal p value of p<0.0001 without multiplicity adjustment. No emergent putative resistance variants have been observed thus far in patients treated with combination therapy.
Combination therapy also met prespecified clinical endpoints, including the time-weighted average change from baseline in total symptom score from day 1 to 11 (p=0.009). The improvement in symptoms was observed as early as three days after dosing and was similar in magnitude and timing to improvements previously seen with LY-CoV555 monotherapy. The rate of COVID-related hospitalization and ER visits was lower for patients treated with combination therapy (0.9 percent) versus placebo (5.8 percent), a relative risk reduction of 84.5 percent (p=0.049). This was also similar to observations for LY-CoV555 monotherapy.
Combination therapy has been generally well tolerated with no drug-related serious adverse events. In LY-CoV555 monotherapy studies there have been isolated drug-related infusion reactions or hypersensitivity that were generally mild (two reported as serious infusion reactions, all patients recovered). Treatment emergent adverse events were comparable to placebo for both LY-CoV555 monotherapy and combination therapy.
Manufacturing and supply update
To be able to quickly provide treatment to patients around the world,
Based on the combination therapy data, along with the previously disclosed findings for LY-CoV555 monotherapy,
The BLAZE-1 clinical trial (NCT04427501) continues to enroll a confirmatory cohort of higher-risk patients who have been recently diagnosed with mild-to-moderate COVID-19, testing the ability of the antibody combination to reduce the number of patients with persistent high viral load and reduce COVID-related hospitalizations. In addition,
Open-label pragmatic study in COVID-19 outpatients
To generate additional efficacy and safety data,
Moving forward, LY-CoV555 and LY-CoV016 will be referred to as bamlanivimab and etesevimab, respectively.
BLAZE-1 (NCT04427501) is a randomized, double-blind, placebo-controlled Phase 2 study designed to assess the efficacy and safety of LY-CoV555 and LY-CoV016 for the treatment of symptomatic COVID-19 in the outpatient setting. To be eligible, patients were required to have mild or moderate symptoms of COVID-19 as well as a positive SARS-CoV-2 test based on a sample collected no more than three days prior to drug infusion.
The monotherapy arms of the trial enrolled mild-to-moderate recently diagnosed COVID-19 patients, studying three doses of LY-CoV555 (700 mg, 2800 mg, and 7000 mg) versus placebo. The combination arm of the trial enrolled mild-to-moderate, recently diagnosed COVID-19 patients, studying LY-CoV555 2800 mg plus LY-CoV016 2800 mg versus placebo. Placebo patients were shared across all therapy arms in the completed cohorts.
The primary outcome measure for these completed arms of the BLAZE-1 trial was change from baseline to day 11 in SARS-CoV-2 viral load. Additional endpoints include the percentage of participants who experience COVID-related hospitalization, ER visit or death from baseline through day 29, as well as safety.
The study is ongoing with additional treatment arms. Across all treatment arms, the trial will enroll an estimated 800 participants.
About bamlanivimab (LY-CoV555)
LY-CoV555 is a potent, neutralizing IgG1 monoclonal antibody (mAb) directed against the spike protein of SARS-CoV-2. It is designed to block viral attachment and entry into human cells, thus neutralizing the virus, potentially preventing and treating COVID-19. LY-CoV555 emerged from the collaboration between
About etesevimab (LY-CoV016)
LY-CoV016 (also known as JS016) is a recombinant fully human monoclonal neutralizing antibody, which specifically binds to the SARS-CoV-2 surface spike protein receptor binding domain with high affinity and can effectively block the binding of the virus to the ACE2 host cell surface receptor. Point mutations were introduced into the native human IgG1 antibody to mitigate effector function. A SARS-CoV-2 challenge study was conducted in rhesus macaques and showed LY-CoV016 is effective for both prophylactic and therapeutic venues against SARS-CoV-2 infection.
This press release contains forward-looking statements (as that term is defined in the Private Securities Litigation Reform Act of 1995) about LY-CoV555 and LY-CoV016 as a potential treatment for patients with or at risk of infection from COVID-19 and reflects
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