
In post-Covid life, Vir looks to stomp out influenza in up to $1B BARDA contract that boosts GSK-allied mAb
With its Covid-19 monoclonal antibody sidelined in the US since April and plans for full approval no longer in the cards, Vir Biotechnology is putting more eggs into the influenza basket with a hefty-sized contract from the federal government.
A capital infusion will bankroll a US-only Phase II testing Vir’s mAb as a pre-exposure prophylaxis to safeguard against seasonal and pandemic flu. The safety, efficacy and tolerability trial will kick off later this fall and read out initial data around next summer.
HHS’ BARDA has injected $55 million into the San Francisco biotech’s asset, dubbed VIR-2482, and could dole out a total of $1 billion across that program and others, Vir said Tuesday morning.
As part of the multi-year contract, Vir could be on tap to create as many as 10 candidates — whether mAbs or other modalities — for emerging infectious disease or Chemical, Biological, Radiological, and Nuclear (CBRN) medical countermeasures. The federal government concocted a 12-option agreement with the biotech, which has an ambitious mission of “a world without infectious disease.”
“This conversation started several years ago and has gone through a couple generations. Covid, in the middle, slowed everybody down in terms of thinking about other avenues of preparedness that we need to be ready for,” Bolyn Hubby, Vir’s chief corporate affairs officer, told Endpoints News in a preview of the deal, “and so really excited to see BARDA come back around as soon as Covid started getting more under control and add antibodies for prophylaxis to their agenda, and this is one of the first awards in that space.”
Vaccines have long been the primary approach to prevention for the flu, as is the avenue being taken by Vir’s counterparts in the fight against Covid, namely BioNTech-Pfizer and Moderna, both with influenza vaccines in late-stage testing.
Through a 2021 tie-up, Vir’s sotrovimab partner, GSK, can buy the keys to exclusively test the mAb in Phase III and commercialize the drug, should it win approval. The mAb was initially conceived in Vir’s Bellinzona, Switzerland labs, Hubby said. The ongoing work is a collaboration among the Swiss, Portland, St. Louis and San Francisco teams.
In a press release noting coronavirus’ lasting reminder that infectious diseases pose an “ever-present global threat,” Raj Gupta, Vir VP of global health and public-private partnerships, made a point of saying the biotech believes its Covid-19 asset, sotrovimab, “continues to bring benefit to appropriate patients around the world.” Gupta also highlighted Vir’s prior work co-discovering ansuvimab for Ebola.
The biotech positions its BARDA-funded asset as an intramuscularly administered mAb that goes after all strains of influenza A observed since the 1918 pandemic.
Vir thinks the single-dose flu-fighting tool might last the entire flu season and drum up better protection than current vaccines, which need buy-in from an individual’s immune system to form the antibodies.
“Vaccine efficacy in flu, there’s some room for improvement. I think it’s an average efficacy of about 40% and lower than that in high-risk population – elderly or elderly with comorbidities, immunocompromised — so these are millions and millions of people that don’t have an optimal option,” Hubby said.
Hubby is familiar with the world of flu vaccines — prior to joining Vir via its consumption of gene-editing shop Agenovir in 2018, she was VP of vaccines and antimicrobials at Synthetic Genomics, now known as Viridos.
Elsewhere in the pipeline, Vir is in the midst of clinical studies of potential HBV treatments with the help of Alnylam, Brii Biosciences and Gilead. The biotech, which last month celebrated the opening of its St. Louis research campus, is in the preclinical stages on an HDV treatment. With the help of the Bill & Melinda Gates Foundation, Vir is also investigating a T cell vaccine for HIV, currently in Phase I.