The two abstracts accepted for poster presentation include:
Preliminary, blinded pharmacokinetic and safety data from the first-in-human, randomized, placebo-controlled Phase 1 study, which demonstrate that intramuscular dosing of VIR-2482 was well tolerated among healthy volunteers at doses up to 1,800mg (Abstract #631). The preliminary pharmacokinetic profile also shows a prolonged half-life, which could enable once-per-season dosing.
Preclinical data, which show that VIR-2482 has broad binding and neutralizing potential against all major strains of influenza A, including pandemic strains, from the last 100 years (Abstract #1231). Additionally, VIR-2482 administered prophylactically 24 hours prior to lethal doses of influenza significantly reduced morbidity and prevented mortality in mouse models.
The data presented at IDWeek quantify the magnitude of the urgent need for a universal influenza A-neutralizing monoclonal antibody with high efficacy. The data also suggest that VIR-2482, because of its broad influenza A strain coverage, potency and prolonged half-life, has the potential to be the first neutralizing monoclonal antibody to address this large unmet need.