Moderna vaccine 94% effective, latest results show

Moderna has announced that the primary efficacy analysis of the Phase III study of mRNA-1273 conducted on 196 cases confirms the high efficacy observed at the first interim analysis.

The data analysis indicates a vaccine efficacy of 94.1%. The company has also reported no cases of severe disease among those vaccinated. Moderna will now seek approval with regulators, the FDA and the European Medicines Agency (EMA).

The Phase III study, known as the COVE study, enrolled more than 30,000 participants in the US. and is being conducted in collaboration with the National Institute of Allergy and Infectious Diseases (NIAID), part of the National Institutes of Health (NIH), and the Biomedical Advanced Research and Development Authority (BARDA), part of the Office of the Assistant Secretary for Preparedness and Response at the U.S. Department of Health and Human Services.

The primary endpoint of the Phase III COVE study is based on the analysis of COVID-19 cases confirmed and adjudicated starting two weeks following the second dose of vaccine. Vaccine efficacy has been demonstrated at the first interim analysis with a total of 95 cases based on the pre-specified success criterion on efficacy. Today’s primary analysis was based on 196 cases, of which 185 cases of COVID-19 were observed in the placebo group versus 11 cases observed in the mRNA-1273 group, resulting in a point estimate of vaccine efficacy of 94.1%.

A secondary endpoint analysed severe cases of COVID-19 and included 30 severe cases (as defined in the study protocol) in this analysis. All 30 cases occurred in the placebo group and none in the mRNA-1273 vaccinated group. There was one COVID-19-related death in the study to date, which occurred in the placebo group.

Efficacy was consistent across age, race and ethnicity, and gender demographics. The 196 COVID-19 cases included 33 older adults (ages 65+) and 42 participants identifying as being from diverse communities (including 29 Hispanic or LatinX, 6 Black or African Americans, 4 Asian Americans and 3 multiracial participants).

The safety profile of the Phase III study of mRNA-1273 was previously described on November 16. A continuous review of safety data is ongoing and no new serious safety concerns have been identified by the company. Based on prior analysis, the most common solicited adverse reactions included injection site pain, fatigue, myalgia, arthralgia, headache, and erythema/redness at the injection site. Solicited adverse reactions increased in frequency and severity in the mRNA-1273 group after the second dose.

The company will submit data from the Phase III COVE study to a peer-reviewed publication.

“This positive primary analysis confirms the ability of our vaccine to prevent COVID-19 disease with 94.1% efficacy and importantly, the ability to prevent severe COVID-19 disease. We believe that our vaccine will provide a new and powerful tool that may change the course of this pandemic and help prevent severe disease, hospitalizations and death,” said Stéphane Bancel, Chief Executive Officer of Moderna.

“I want to thank the thousands of participants in our Phase I, Phase II and Phase III studies, as well as the staff at clinical trial sites who have been on the front lines of the fight against the virus. I would again like to thank our partners at NIH, NIAID, BARDA and Operation Warp Speed who have helped us advance the clinical development of mRNA-1273. Finally, I want to thank the Moderna team and our suppliers and partners for their tireless work on the research, development and manufacturing of our vaccine. We will file today for an Emergency Use Authorization from the FDA and continue forging ahead with the rolling reviews that have already been initiated with several regulatory agencies around the globe.”

Today, Moderna will submit for an EUA with the FDA and an application for Conditional Marketing Authorization (CMA) with the European Medicines Agency. The company has already initiated the rolling review process with the EMA, Health Canada, SwissMedic, the United Kingdom Medicines and Healthcare products Regulatory Agency (MHRA), Ministry of Health in Israel, and Health Sciences Authority in Singapore and intends to seek Prequalification (PQ) and/or Emergency Use Listing (EUL) with the World Health Organization (WHO).

Additionally, Moderna announced that the FDA’s Vaccines and Related Biological Products Advisory Committee (VRBPAC) meeting to review the safety and efficacy data package for mRNA-1273 will likely be scheduled for Thursday, December 17. The company expects that the US Centers for Disease Control and Prevention (CDC) Advisory Committee on Immunization Practices (ACIP) will make a recommendation on immunisation priorities. The company anticipates that the shipping of mRNA-1273 to designated distribution points throughout the U.S. will occur shortly after an Emergency Use Authorization is granted.

 

 

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