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Showing posts with the label obeldesivir

Efficacy and safety of #obeldesivir in low-risk, non-hospitalised #patients with #COVID19 (OAKTREE): a phase 3, randomised, double-blind, placebo-controlled study

Summary Background Obeldesivir is an oral nucleoside analogue prodrug antiviral that inhibits SARS-CoV-2 replication . We aimed to assess the efficacy, safety, and tolerability of obeldesivir for the treatment of COVID-19 in non-hospitalised individuals at low risk of progression to severe disease. Methods OAKTREE was a phase 3, randomised, double-blind, placebo-controlled trial in 107 centres (including research centres, primary care centres, and hospitals) in Japan and the USA . Low-risk, non-hospitalised adults and adolescents with mild-to-moderate COVID-19 were enrolled within 3 days of symptom onset. Eligible participants were randomly assigned 1:1 using permuted block randomisation (block size of four), stratified by historical completion of a primary COVID-19 vaccination series, to receive either oral obeldesivir 350 mg or matched placebo twice daily for 5 days. The primary efficacy endpoint was time to COVID-19 symptom alleviation by day 29, which was assessed in all randomly a...

#Remdesivir and #Obeldesivir Retain Potent #Antiviral Activity Against #SARS-CoV-2 #Omicron Variants

Abstract As new SARS-CoV-2 variants continue to emerge , it is important to evaluate the potency of antiviral drugs to support their continued use. Remdesivir (RDV; VEKLURY®) an approved antiviral treatment for COVID-19, and obeldesivir (ODV) are inhibitors of the SARS-CoV-2 RNA-dependent RNA polymerase Nsp12. Here we show these two compounds retain antiviral activity against the Omicron variants BA.2.86, BF.7, BQ.1, CH.1.1, EG.1.2, EG.5.1, EG.5.1.4, FL.22, HK.3, HV.1, JN.1, JN.1.7, JN.1.18, KP.2, KP.3, LB.1, XBB.1.5, XBB.1.5.72, XBB.1.16, XBB.2.3.2, XBC.1.6, and XBF when compared with reference strains. Genomic analysis identified 29 Nsp12 polymorphisms in these and previous Omicron variants. Phenotypic analysis of these polymorphisms confirmed no impact on the antiviral activity of RDV or ODV and suggests Omicron variants containing these Nsp12 polymorphisms remain susceptible to both compounds. These data support the continued use of RDV in the context of circulating SARS-CoV-2 vari...