New data from the AZD7442 COVID-19 PROVENT prevention and TACKLE outpatient treatment Phase III trials both showed robust efficacy from a one-time intramuscular (IM) dose of the long-acting antibody (LAAB) combination. In an analysis of the ongoing PROVENT trial evaluating a median six months of participant follow-up, one 300mg IM dose of AZD7442 reduced the risk of developing symptomatic COVID-19 compared to placebo by 83%.

Hugh Montgomery, Professor of Intensive Care Medicine at University College London, UK and AZD7442 principal investigator, said: “These compelling results give me confidence that this long-acting antibody combination can provide my vulnerable patients with the long-lasting protection they urgently need to finally return to their everyday lives. Importantly, six months of protection was maintained despite the surge of the Delta variant among these high-risk participants who may not respond adequately to vaccination.”

Mene Pangalos, Executive Vice President, BioPharmaceuticals R&D, AstraZeneca, said: “AZD7442 is the only long-acting antibody with Phase III data to demonstrate benefit in both pre-exposure prophylaxis and treatment of COVID-19 with one dose. These new data add to the growing body of evidence supporting AZD7442’s potential to make a significant difference in the prevention and treatment of COVID-19. We are progressing regulatory filings around the world and look forward to providing an important new option against SARS-CoV-2 as quickly as possible.