Lilly's neutralizing antibody bamlanivimab (LY-CoV555) prevented COVID-19 at nursing homes in the BLAZE-2 trial, reducing risk by up to 80 per cent for residents
The 965 participants who tested negative for the SARS-CoV-2 virus at baseline (299 residents and 666 staff) were included in the analysis of primary and key secondary endpoints for assessing bamlanivimab as a preventative, while the 132 participants (41 residents and 91 staff) who tested positive for the virus at baseline were included in exploratory analyses for assessing bamlanivimab as a treatment, adding to the growing body of evidence for treatment with bamlanivimab. All participants were randomized to receive either 4,200 mg of bamlanivimab or placebo.
After all participants reached 8 weeks of follow-up, there was a significantly lower frequency of occurrences of symptomatic COVID-19 (the primary endpoint) in the bamlanivimab treatment arm versus placebo (odds ratio 0.43, p=0.00021). Results for all key secondary endpoints also reached statistical significance in both the overall and resident populations.
For the pre-specified subgroup of nursing home residents, there was also a significantly lower frequency of symptomatic COVID-19 in those treated with bamlanivimab versus placebo in this important population (odds ratio 0.20; p=0.00026). These results suggest that residents randomized to bamlanivimab have up to an 80 percent lower risk of contracting COVID-19 versus residents in the same facility randomized to placebo.
Results from exploratory analyses of viral load in the treatment group were consistent with previously disclosed data from BLAZE-1, which is evaluating bamlanivimab as an outpatient treatment for recently diagnosed COVID-19.
Among the 299 residents in the prevention group, there were 4 deaths attributed to COVID-19 at the time of death, and all occurred in the placebo arm. There were no COVID-19-attributed deaths in the bamlanivimab arm. Among the 41 residents in the treatment group there were 4 deaths, and all occurred in the placebo arm with none in the bamlanivimab arm. Over the entire trial, there were a total of 16 deaths reported, including deaths not related to COVID-19, and all deaths were among residents (11 deaths in the placebo arm and 5 in the bamlanivimab arm).
"We're very pleased with these results, which showed bamlanivimab helped prevent COVID-19, and substantially reduced symptomatic disease among nursing home staff and residents," said
An independent data and safety monitoring board oversaw the BLAZE-2 trial. In the trial, the safety profile of bamlanivimab was consistent with observations from the Phase 1 and Phase 2 trials. Serious adverse events were reported at a similar frequency in the bamlanivimab and placebo groups. Across multiple clinical trials,
"The results of this innovative study further support the belief that bamlanivimab – and potentially other monoclonal antibodies – can reduce symptoms and may even prevent COVID-19," said
BLAZE-2 is a first-of-its-kind COVID-19 trial designed to evaluate this vulnerable population by addressing the challenging aspects of running a clinical trial in long-term care facilities, which normally do not conduct clinical trials. The study is sponsored by
Important Information about bamlanivimab
HEALTH CANADA HAS AUTHORIZED THE SALE OF THIS COVID-19 DRUG BASED ON LIMITED CLINICAL TESTING IN HUMANS AND/OR QUALITY INFORMATION.
Bamlanivimab is indicated for: The treatment of adults and pediatric patients 12 years of age or older with mild to moderate COVID-19 who weigh at least 40 kg and who are at high risk of progressing to severe COVID-19 illness and/or hospitalization.
The use of bamlanivimab is permitted under an interim authorization delivered in accordance with section 5 of the Interim Order Respecting the Importation, Sale and Advertising of Drugs for Use in Relation to COVID-19, pending the results of trials to verify its clinical benefit. Patients should be advised of the nature of the authorization. The interim authorization is associated with Terms and Conditions that need to be met by the sponsor to ascertain the continued quality, safety and efficacy of the product. For further information on authorization under this pathway, please refer to
Healthcare providers should review the product monograph for bamlanivimab, the Patient Medication Information on bamlanivimab, and the Dear HCP Letter on the use of bamlanivimab with English-only labels. Also available is the Bamlanivimab Playbook: information for provincial, territorial and local public health programs in planning and implementing the use of bamlanivimab in response to COVID-19 (
Bamlanivimab is a recombinant, neutralizing human 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 treating COVID-19. Bamlanivimab emerged from the collaboration between
Bamlanivimab is authorized in the
BLAZE-2, (NCT04497987) is a randomized, double-blind, placebo-controlled trial to evaluate the efficacy and safety of bamlanivimab 4200 mg versus placebo for the prevention of SARS-CoV-2 infection and COVID-19 in skilled nursing and assisted living facility residents and staff. To be eligible, there must be at least one confirmed case of SARS-CoV-2 infection among residents or facility staff based on a sample collection no more than seven days prior to randomization.
The primary outcome measure for the completed arms of the BLAZE-2 trial was cumulative incidence of COVID-19 defined as the detection of SARS-CoV-2 by RT-PCR and mild or worse disease severity within 21 days of detection. Additional endpoints include cumulative incidence of SARS-CoV-2 infection, moderate or worse disease severity within 21 days of detection, as well as safety.
Residents and staff were tested for SARS-CoV-2 weekly – whether or not they exhibited symptoms – providing robust surveillance data regarding the impact of bamlanivimab on infection rates and symptomatic COVID-19 diagnoses in this population.
The study is ongoing as an open-label trial evaluating bamlanivimab alone or administered together with another antibody as a treatment for high-risk individuals (residents and staff) diagnosed with COVID-19 at long-term care facilities.
Across all treatment arms, the trial will enroll up to 5,000 participants.
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Lilly Cautionary Statement Regarding Forward-Looking Statements
This press release contains forward-looking statements (as that term is defined in the Private Securities Litigation Reform Act of 1995) about bamlanivimab (LY-CoV555) as a potential treatment for patients with or at risk of infection from COVID-19, as well as its supply, and reflects