- FDA’s reasoning appears to center on a belief that COVID-19 treatment immunobridging analyses for a monoclonal antibody (mAb) must meet a standard of superior antiviral activity rather than equivalent antiviral activity to past, highly effective, previously authorized and now inactive COVID-19 mAbs in a bridging analysis of sVNA1 titer levels, otherwise the Agency is “unable to reasonably conclude that the known and potential benefits of pemivibart…outweigh the known and potential risks”
- Invivyd’s submission to expand the PEMGARDA
- In parallel with continuing efforts with the FDA to advance PEMGARDA as a COVID-19 treatment for certain immunocompromised patients, Invivyd plans to rapidly advance VYD2311 in collaboration with FDA given the ongoing and unacceptable burden of COVID-19 in America, including high rates of death, hospitalization, and Long COVID, reflective of the short and modest disease protection from the current standard of care for vulnerable patient populations
- The COVID-19 treatment opportunity for pemivibart was not contemplated in existing financial guidance
WALTHAM, Mass., Feb. 24, 2025 (GLOBE NEWSWIRE) — Invivyd, Inc. (Nasdaq: IVVD) today announced that Invivyd’s request to expand the existing emergency use authorization (EUA) for pre-exposure prophylaxis of COVID-19 EUA for PEMGARDA
“This is a sad day for patients in need. Immunocompromised people who cannot access standard of care are once again left with no option for COVID-19 treatment. Pemivibart, in contrast to all other COVID-19 antibodies ever made, is active and in clinical use today in the U.S. as authorized. Pemivibart is safe enough for certain immunocompromised patients who are not currently sick with COVID-19, but it is now being withheld from those same immunocompromised patients fighting active COVID-19 infection purportedly because its measured antiviral activity is in-line with, but does not clearly exceed, the activity of its key comparator antibody adintrevimab, as well as other comparative mAbs,” commented Mark Wingertzahn, Invivyd’s Senior Vice President of Clinical Development.
“It is disappointing that healthcare providers are unable to add the power of a mAb therapy for treatment of COVID-19 to our current therapeutic options. Current treatments such as PAXLOVID® may be contraindicated, clinically inappropriate, or not accessible for patients, especially among the immunocompromised who are most vulnerable and often have complex cases and medication regimens. We need tools like PEMGARDA
Invivyd plans in the near term to share detailed data and regulatory correspondence regarding pemivibart, VYD2311 and immunobridging of COVID-19 antibodies, so Americans can better appreciate the historic and recent governmental handling of these assets in contrast to COVID-19 vaccines and small molecule treatment.
About PEMGARDA
PEMGARDA
PEMGARDA (pemivibart) injection (4500 mg), for intravenous use is an investigational mAb that has not been approved, but has been authorized for emergency use by the U.S. FDA under an EUA for the pre-exposure prophylaxis (prevention) of COVID-19 in adults and adolescents (12 years of age and older weighing at least 40 kg) who have moderate-to-severe immune compromise due to certain medical conditions or receipt of certain immunosuppressive medications or treatments and are unlikely to mount an adequate immune response to COVID-19 vaccination. Recipients should not be currently infected with or have had a known recent exposure to an individual infected with SARS-CoV-2.
PEMGARDA is not authorized for use for treatment of COVID-19 post-exposure prophylaxis of COVID-19. Pre-exposure prophylaxis with PEMGARDA is not a substitute for vaccination in individuals for whom COVID-19 vaccination is recommended. Individuals for whom COVID-19 vaccination is recommended, including individuals with moderate-to-severe immune compromise who may derive benefit from COVID-19 vaccinations, should receive COVID-19 vaccination. In individuals who have recently received a COVID-19 vaccine, PEMGARDA should be administered at least 2 weeks after vaccination.
Anaphylaxis has been observed with PEMGARDA and the PEMGARDA Fact Sheet for Healthcare Providers includes a boxed warning for anaphylaxis. The most common adverse events (all grades, incidence ≥2%) observed in participants who have moderate-to-severe immune compromise treated with PEMGARDA included systemic and local infusion-related or hypersensitivity reactions, upper respiratory tract infection, viral infection, influenza-like illness, fatigue, headache, and nausea. For additional information, please see the PEMGARDA full product Fact Sheet for Healthcare Providers, including important safety information and boxed warning.
To support the EUA for PEMGARDA, an immunobridging approach was used to determine if PEMGARDA may be effective for pre-exposure prophylaxis of COVID-19. Immunobridging is based on the serum virus neutralizing titer-efficacy relationships identified with other neutralizing human mAbs against SARS-CoV-2. This includes adintrevimab, the parent mAb of pemivibart, and other mAbs that were previously authorized for EUA. There are limitations of the data supporting the benefits of PEMGARDA. Evidence of clinical efficacy for other neutralizing human mAbs against SARS-CoV-2 was based on different populations and SARS-CoV-2 variants that are no longer circulating. Further, the variability associated with cell-based EC50 value determinations, along with limitations related to pharmacokinetic data and efficacy estimates for the mAbs in prior clinical trials, impact the ability to precisely estimate protective titer ranges. Additionally, certain SARS-CoV-2 viral variants may emerge that have substantially reduced susceptibility to PEMGARDA, and PEMGARDA may not be effective at preventing COVID-19 caused by these SARS-CoV-2 viral variants.
The emergency use of PEMGARDA is only authorized for the duration of the declaration that circumstances exist justifying the authorization of the emergency use of drugs and biological products during the COVID-19 pandemic under Section 564(b)(1) of the Federal Food, Drug, and Cosmetic Act, 21 U.S.C. § 360bbb-3(b)(1), unless the declaration is terminated or authorization revoked sooner. PEMGARDA is authorized for use only when the combined national frequency of variants with substantially reduced susceptibility to PEMGARDA is less than or equal to 90%, based on available information including variant susceptibility to PEMGARDA and national variant frequencies.
About VYD2311
VYD2311 is a novel monoclonal antibody (mAb) candidate being developed for COVID-19 to continue to address the urgent need for new prophylactic and therapeutic options. The pharmacokinetic profile and antiviral potency of VYD2311 may offer the ability to deliver clinically meaningful titer levels through more patient-friendly means such as an intramuscular route of administration.
VYD2311 was engineered using Invivyd’s proprietary integrated technology platform and is the product of serial molecular evolution designed to generate an antibody optimized for neutralizing contemporary virus lineages. VYD2311 leverages the same antibody backbone as pemivibart, Invivyd’s investigational mAb granted emergency use authorization in the U.S. for the pre-exposure prophylaxis (PrEP) of symptomatic COVID-19 in certain immunocompromised patients, and adintrevimab, Invivyd’s investigational mAb that has a robust safety data package and demonstrated clinically meaningful results in global Phase 2/3 clinical trials for the prevention and treatment of COVID-19.
About Invivyd
Invivyd, Inc. (Nasdaq: IVVD) is a biopharmaceutical company devoted to delivering protection from serious viral infectious diseases, beginning with SARS-CoV-2. Invivyd deploys a proprietary integrated technology platform unique in the industry designed to assess, monitor, develop, and adapt to create best in class antibodies. In March 2024, Invivyd received emergency use authorization (EUA) from the U.S. FDA for a monoclonal antibody (mAb) in its pipeline of innovative antibody candidates. Visit https://invivyd.com/ to learn more.
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Cautionary Note Regarding Forward-Looking Statements
This press release contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. Words such as “anticipates,” “believes,” “could,” “expects,” “estimates,” “intends,” “potential,” “projects,” and “future” or similar expressions (as well as other words or expressions referencing future events, conditions or circumstances) are intended to identify forward-looking statements. Forward-looking statements include statements concerning, among other things, the company’s efforts with the FDA to advance PEMGARDA as a COVID-19 treatment for certain immunocompromised patients and plans to rapidly advance VYD2311 in collaboration with the FDA; expectations regarding the COVID-19 landscape and beliefs regarding limitations of current therapies for COVID-19; the potential of PEMGARDA
This press release contains hyperlinks to information that is not deemed to be incorporated by reference in this press release.
Contacts:
Media Relations
(781) 208-1747
media@invivyd.com
Investor Relations
(781) 208-1747
investors@invivyd.com
1 sVNA stands for serum virus neutralizing antibody titers, the industry standard measurement of antibody antiviral activity
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