Just a day after the world's first approval of Merck & Co. Inc.'s oral antiviral for COVID-19 positioned it to offer a new way to keep Britons at high risk of severe disease out of the hospital, Pfizer Inc. is stopping a phase II/III trial of its oral antiviral, Paxlovid, early for "overwhelming efficacy" in a similar group. Interim results showed that combining the drug, also known as PF-07321332, with ritonavir reduced the risk of hospitalization or death for adults with mild to moderate COVID-19 but at high risk of severe disease by 89% vs. placebo.

LONDON – Researchers have pinpointed a little-studied gene as responsible for doubling the risk of respiratory failure in COVID-19 and shown exactly how it exerts its effect. The gene, leucine zipper transcription factor like 1, is activated by a single base pair change on chromosome 3 that occurs in 60% of people of South Asian ancestry and 15% of people of European ancestry.

Fapon Biotech Inc. expanded its presence in the global next-generation sequencing (NGS) market by acquiring all of the shares in U.S. firm Sequlite Genomics US Inc. With the acquisition, the Dongguan, China-based Fapon Biotech will manage Sequlite’s product development and business operation.

A closely watched oral antiviral for the treatment of mild to moderate COVID-19 will soon be available in Britain after a conditional authorization by the U.K. Medicines and Healthcare products Regulatory Agency. Developed by Ridgeback Biotherapeutics Inc. and Merck & Co. Inc., the drug will be marketed as Lagevrio (molnupiravir) and made available via a national study this winter, the government said.