Pfizer and BioNTech Initiate Rolling Submission of Supplemental Biologics License Application to U.S. FDA for Booster Dose of COMIRNATY® in Individuals 16 and Older

• New Phase 3 data show booster (third) dose of COMIRNATY induces significant SARS-CoV-2 neutralizing antibody titers and demonstrated a favorable safety and tolerability profile
• SARS-CoV-2 neutralizing titers against the wild-type strain one month after booster dose were 3.3 times the titers one month after the second dose
• Pfizer and BioNTech intend to file these data with the European Medicines Agency (EMA) and other regulatory authorities around the world in coming weeks

NEW YORK, USA and MAINZ, GERMANY, August 25, 2021 — Pfizer Inc. (NYSE: PFE) and BioNTech SE (Nasdaq: BNTX) today announced the initiation of a supplemental Biologics License Application (sBLA) to the U.S. Food and Drug Administration (FDA) for the approval of a booster (third) dose of COMIRNATY^® (COVID-19 vaccine, mRNA) to prevent COVID-19 in individuals 16 years of age and older. The companies intend to complete submission of the sBLA by the end of this week.

The sBLA includes data from a Phase 3 clinical trial of 306 participants 18-55 years of age who received a booster (third) dose of COMIRNATY, between 4.8 and 8 months after completing the two-dose primary regimen, with a median follow-up time of 2.6 months post booster. The booster (third) dose of COMIRNATY elicited robust neutralizing antibodies to the wild-type strain in participants who were without evidence of SARS-CoV-2 infection through one month post dose three. SARS-CoV-2 50% neutralizing titers (PRNT50) after the third dose were 3.3 times the titers after the second dose. The post dose three neutralizing titers met the prespecified 1.5-fold non-inferiority criterion for success and were statistically superior. Moreover, 99.5% of participants had a four-fold response after the third dose, compared to 98.0% after the second dose. The titers after dose three met the pre-specified 10% non-inferiority margin for the difference in the four-fold seroresponse rates.

The reactogenicity profile within seven days after the booster (third) dose was typically mild to moderate. The most common events included injection site pain, fatigue, headache, muscle and joint pain, and chills. The frequency of any severe systemic event after the booster dose was low. The frequency of reactogenicity was similar to or better than after dose two of the primary series. The adverse event profile was generally consistent with other clinical data for COMIRNATY.

Pfizer and BioNTech intend to submit these data to a peer reviewed journal, as well as file these data with the European Medicines Agency (EMA) and other regulatory authorities around the world in the coming weeks.

A third dose of the Pfizer-BioNTech vaccine is not currently authorized for broad use in the U.S. However, under the current amended Emergency Use Authorization, a third dose was authorized on August 12 for administration to individuals at least 12 years of age who have undergone solid organ transplantation, or who are diagnosed with conditions that are considered to have an equivalent level of immunocompromise.

COMIRNATY, which is based on BioNTech’s proprietary mRNA technology, was developed by both BioNTech and Pfizer. BioNTech is the Marketing Authorization Holder in the United States, the European Union and the United Kingdom, and the holder of emergency use authorizations or equivalents in the United States (jointly with Pfizer), Canada and other countries. Submissions to pursue regulatory approvals in those countries where emergency use authorizations or equivalent were initially granted are planned.

Indication & Authorized Use

COMIRNATY^® (COVID-19 vaccine, mRNA) is an FDA-approved COVID-19 vaccine made by Pfizer for BioNTech.

• It is approved as a 2-dose series for prevention of COVID-19 in individuals 16 years of age and older
• It is also authorized under Emergency Use Authorization (EUA) to be administered for emergency use to:
  • prevent COVID-19 in individuals 12 through 15 years, and
  • provide a third dose to individuals 12 years of age and older who have been determined to have certain kinds of immunocompromise

The Pfizer-BioNTech COVID-19 vaccine has received EUA from FDA to:

• prevent COVID-19 in individuals 12 years of age and older, and
• provide a third dose to individuals 12 years of age and older who have been determined to have certain kinds of immunocompromise

The FDA-approved COMIRNATY^® (COVID-19 vaccine, mRNA) and the EUA-authorized Pfizer-BioNTech COVID-19 vaccine have the same formulation and can be used interchangeably to provide the COVID-19 vaccination series. An individual may be offered either COMIRNATY^® (COVID-19 vaccine, mRNA) or the Pfizer-BioNTech COVID-19 Vaccine to prevent coronavirus disease 2019 (COVID-19) caused by SARS-CoV-2.

EUA Statement
This emergency use of the product has not been approved or licensed by FDA, but has been authorized by FDA under an Emergency Use Authorization (EUA) to prevent Coronavirus Disease 2019 (COVID-19) for use in individuals 12 years of age and older; and the emergency use of this product is only authorized for the duration of the declaration that circumstances exist justifying the authorization of emergency use of the medical product under Section 564(b)(1) of the FD&C Act unless the declaration is terminated or authorization revoked sooner.

Important Safety Information  
Individuals should not get the Pfizer-BioNTech COVID-19 vaccine if they: 

• had a severe allergic reaction after a previous dose of this vaccine 
• had a severe allergic reaction to any ingredient of this vaccine  

Individuals should tell the vaccination provider about all of their medical conditions, including if they: 

• have any allergies 
• have had myocarditis (inflammation of the heart muscle) or pericarditis (inflammation of the lining outside the heart) 
• have a fever 
• have a bleeding disorder or are on a blood thinner 
• are immunocompromised or are on a medicine that affects the immune system 
• are pregnant, plan to become pregnant, or are breastfeeding 
• have received another COVID-19 vaccine 
• have ever fainted in association with an injection 

The vaccine may not protect everyone. 

Side effects reported with the vaccine include: 

• There is a remote chance that the vaccine could cause a severe allergic reaction 
  • A severe allergic reaction would usually occur within a few minutes to one hour after getting a dose of the vaccine. For this reason, vaccination providers may ask individuals to stay at the place where they received the vaccine for monitoring after vaccination 
  • Signs of a severe allergic reaction can include difficulty breathing, swelling of the face and throat, a fast heartbeat, a bad rash all over the body, dizziness, and weakness 
  • If an individual experiences a severe allergic reaction, they should call 9-1-1 or go to the nearest hospital 
• Myocarditis (inflammation of the heart muscle) and pericarditis (inflammation of the lining outside the heart) have occurred in some people who have received the vaccine. In most of these people, symptoms began within a few days following receipt of the second dose of the vaccine. The chance of having this occur is very low. Individuals should seek medical attention right away if they have any of the following symptoms after receiving the vaccine:  
  • chest pain 
  • shortness of breath 
  • feelings of having a fast-beating, fluttering, or pounding heart 
• Side effects that have been reported with the vaccine include: 
  • severe allergic reactions; non-severe allergic reactions such as rash, itching, hives, or swelling of the face; myocarditis (inflammation of the heart muscle); pericarditis (inflammation of the lining outside the heart); injection site pain; tiredness; headache; muscle pain; chills; joint pain; fever; injection site swelling; injection site redness; nausea; feeling unwell; swollen lymph nodes (lymphadenopathy); diarrhea; vomiting; arm pain 
• These may not be all the possible side effects of the vaccine. Serious and unexpected side effects may occur. The vaccine is still being studied in clinical trials. Call the vaccination provider or healthcare provider about bothersome side effects or side effects that do not go away 

There is no information on the use of the vaccine with other vaccines. 

Patients should always ask their healthcare providers for medical advice about adverse events. Individuals are encouraged to report negative side effects of vaccines to the US Food and Drug Administration (FDA) and the Centers for Disease Control and Prevention (CDC). Visit http://www.vaers.hhs.gov or call 1‐800‐822‐7967. In addition, side effects can be reported to Pfizer Inc. at www.pfizersafetyreporting.com or by calling 1-800-438-1985. 
Please click here for full Prescribing Information (16+ years of age). Please click here for Fact Sheet for Vaccination Providers (12+ years of age).

About Pfizer: Breakthroughs That Change Patients’ Lives

At Pfizer, we apply science and our global resources to bring therapies to people that extend and significantly improve their lives. We strive to set the standard for quality, safety and value in the discovery, development and manufacture of health care products, including innovative medicines and vaccines. Every day, Pfizer colleagues work across developed and emerging markets to advance wellness, prevention, treatments and cures that challenge the most feared diseases of our time. Consistent with our responsibility as one of the world's premier innovative biopharmaceutical companies, we collaborate with health care providers, governments and local communities to support and expand access to reliable, affordable health care around the world. For more than 170 years, we have worked to make a difference for all who rely on us. We routinely post information that may be important to investors on our website at www.Pfizer.com. In addition, to learn more, please visit us on www.Pfizer.com and follow us on Twitter at @Pfizer and @Pfizer News, LinkedIn, YouTube and like us on Facebook at Facebook.com/Pfizer.