Pfizer Inc. and Biontech SE have initiated a phase I study to evaluate the safety, tolerability and immunogenicity of BNT-162b4, a next-generation COVID-19 vaccine candidate that aims to enhance SARS-CoV-2 T-cell responses and potentially broaden protection against COVID-19.
An in-depth investigation of the underlying causes of pulmonary symptoms that in some cases persist for months following recovery from the acute stage of COVID-19 has found a distinctive proinflammatory signature in the plasma and airways of affected patients. The research could provide an explanation for the ongoing interstitial lung disease and fibrosis seen in patients who were hospitalized with severe COVID-19, and also point to neutrophils as a specific therapeutic target.
Britain’s National Institute for Health and Care Excellence (NICE), a key gatekeeper on the path to the U.K. market, is backing away from five COVID-19 treatments. No longer recommended in a draft guidance were Ronapreve (casirivimab + imdevimab) from Roche Holding AG, Xevudy (sotrovimab) from GSK plc, and Evusheld (tixagevimab + cilgavimab) from Astrazeneca plc. NICE also recommended discontinuing use of Lagevrio (molnupiravir) from Merck and Co. Inc. and Veklury (remdesivir) from Gilead Sciences Inc.
Novartis AG has described 3C-like proteinase (3CLpro) (SARS-CoV-2; COVID-19 virus) inhibitors reported to be useful for the treatment of SARS-CoV-2 infection (COVID-19).
The soluble form of human angiotensin-converting enzyme 2 (hsACE2) could prevent SARS-CoV-2 from binding to the host cell receptors through competitive inhibition, which may avoid viral infection. However, the relatively short half-life of the recombinant hsACE2 limits its clinical application.
Formycon AG has published preclinical in vivo results for the development of its COVID-19 drug FYB-207. In in vivo studies, data were collected in two different models on the pharmacokinetics and efficacy of various constructs of the ACE2-Fc fusion protein, in order to select the most appropriate candidate to enter the clinic.
Results from a study carried out by the COVID-19 Host Genetics Initiative show that rare deleterious variants in the immune-system gene TLR7 make carriers more than five times more likely to have a severe SARS-CoV-2 infection. The TLR7 gene encodes Toll-like receptor 7 protein, which plays a protective role in the immune system by identifying pathogens and activating innate immunity.
While weekly global and U.S. confirmed cases of COVID-19 are below each of the last two years, infectious disease experts remain on guard. There are still about 1,500 people dying around the world each day, including 350 in the U.S., and the SARS-CoV-2 virus may continue to find ways to outmaneuver current treatments and vaccines.
