Adagio offers first peek at Covid-19 antibody data, with preventative numbers that may rival mRNA vaccines
Tillman Gerngross certainly wasn’t the first to tackle Covid-19 antibodies, but he has reason to believe he and his team at Adagio could be the best. Now, we’re getting a first peek at human preventative data for Adagio’s lead antibody, and it looks up to par with the best of the vaccines.
Now, Adagio is churning out early data from that Phase I test showing a single dose of antibody ADG20 offered broadly neutralizing activity in healthy volunteers comparable to peak titers reported from the mRNA vaccines and could offer protection for up to 12 months, the biotech said Wednesday. There were no hard numbers immediately available.
Based on those findings, Adagio has launched its global Phase II/III EVADE study that will test ADG20 in both the pre- and post-exposure settings at 100 sites. The study will evaluate an initial 200 adults in Phase II before potentially opening enrollment to adolescents and pregnant women in Phase III. The primary efficacy endpoint in both cohorts is the prevention of laboratory confirmed, symptomatic Covid-19, Adagio said.
Lynn Connolly“Based on its potent and broad activity and extended duration of effect in preclinical models, we believe that ADG20 has the potential to provide both rapid protection in the face of a known, recent exposure to an individual with SARS-CoV-2 infection as well as durable protection over several months, including for individuals who are unlikely to have a sufficiently protective immune response to vaccines,” CMO Lynn Connolly said in a statement.
Based on science from Gerngross and his team at Adimab, Adagio has made a late push to bring a better Covid-19 antibody to market after some mixed results from drugmakers who raced other candidates to market and have seen limited efficacy against variants.
In April, Adagio snared $336 million as part of a Series C round led by RA Capital to advance ADG20 through a pivotal Phase I/II/III trial for the treatment of high-risk, mild to moderate Covid-19 patients. That trial, dubbed STAMP, stands apart from the preventative study Adagio read out Thursday.
The company believes its antibodies have broadly neutralizing potential against the SARS-CoV-2 emerging variants as well as other sarbecoviruses apart from the novel coronavirus, Adagio said. That could mean some staying power post-Covid.
STAMP is designed to rapidly turn out proof-of-concept data that could form the basis for an emergency use authorization filing, Adagio said.
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