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Pfizer Inc and BioNTech SE have submitted an FDA request for Emergency Use Authorization (EUA) of their mRNA vaccine candidate, BNT162b2 against SARS-CoV-2. In response, the FDA will convene an emergency meeting of its Vaccines and Related Biological Products Advisory Committee (VRBPAC) on Dec 10 to discuss the request.

The vaccine could potentially be administered for high-risk populations by the middle to end of December 2020, according to a Pfizer press release.

The companies announced Phase 3 clinical trial data earlier this month that revealed a vaccine efficacy rate of 95% (p<0.0001) in participants without prior SARS-CoV-2 infection (first primary objective) and also in participants with and without prior SARS-CoV-2 infection (second primary objective), in each case measured from 7 days after the second dose.

The first primary objective analysis was based on 170 confirmed cases of COVID-19. This submission also is supported by solicited safety data from a randomized subset of approximately 8,000 participants ≥18 years of age and unsolicited safety data from approximately 38,000 trial participants who have been followed for a median of two months following the second dose of the vaccine candidate. The submission also includes solicited safety data on approximately 100 children 12-15 years of age. Approximately 42% of global participants and 30% of U.S. participants in the Phase 3 study have racially and ethnically diverse backgrounds, and 41% of global and 45% of U.S. participants are 56-85 years of age. To date, the Data Monitoring Committee (DMC) for the study has not reported any serious safety concerns related to the vaccine.

“Our work to deliver a safe and effective vaccine has never been more urgent, as we continue to see an alarming rise in the number of cases of COVID-19 globally. Filing in the U.S. represents a critical milestone in our journey to deliver a COVID-19 vaccine to the world and we now have a more complete picture of both the efficacy and safety profile of our vaccine, giving us confidence in its potential,” said Dr Albert Bourla, Pfizer chairman and CEO. “We look forward to the upcoming Vaccines and Related Biological Products Advisory Committee discussion and continue to work closely with the FDA and regulatory authorities worldwide to secure authorization of our vaccine candidate as quickly as possible.”

Pfizer and BioNTech’s combined manufacturing network has the potential to supply up to 50 million vaccine doses globally in 2020 and up to 1.3 billion doses by the end of 2021 (subject to clinical success, manufacturing capacity, and regulatory approval or authorization).

FDA Advisory Committee Meeting

The US FDA has scheduled a meeting of its Vaccines and Related Biological Products Advisory Committee (VRBPAC) on Dec 10 to discuss the request for emergency use authorization (EUA) of a COVID-19 vaccine from Pfizer, Inc. in partnership with BioNTech Manufacturing GmbH.

The FDA intends to make background materials available to the public, including the meeting agenda and committee roster, no later than two business days prior to the meeting. In general, advisory committees include a chair, members with scientific and public health expertise, and a consumer, industry, and sometimes a patient representative. Additional experts with specific expertise may be added for individual meetings as needed.

Although the VRBPAC members provide advice to the agency, which may include advice on the safety and effectiveness data submitted in the EUA request, final decisions on whether to authorize the vaccine for emergency use are made by the FDA. 

“The FDA recognizes that transparency and dialogue are critical for the public to have confidence in COVID-19 vaccines. I want to assure the American people that the FDA’s process and evaluation of the data for a potential COVID-19 vaccine will be as open and transparent as possible,” said FDA Commissioner Stephen M. Hahn, MD. “The FDA has been preparing for the review of EUAs for COVID-19 vaccines for several months and stands ready to do so as soon as an EUA request is submitted.  While we cannot predict how long the FDA’s review will take, the FDA will review the request as expeditiously as possible, while still doing so in a thorough and science-based manner, so that we can help make available a vaccine that the American people deserve as soon as possible. A discussion about the safety and effectiveness of Pfizer and BioNTech’s vaccine with this committee, made up of outside scientific and public health experts from around the country, will help ensure clear public understanding of the scientific data and information that the FDA will evaluate in order to make a decision about whether to authorize a vaccine for emergency use for the prevention of COVID-19.”

Source: rtmagazine.com

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