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Atea Pharmaceuticals Presents Favorable Phase 1 Results for AT-527 at 28th Annual Conference on Retroviruses and Opportunistic Infections
High Lung Levels of Active Triphosphate Predicted with Oral AT-527 for COVID-19 Patients Data Supportive of AT-527 550 mg BID Dosing Regimen BOSTON, March 06,
About this update from Atea Pharmaceuticals, Inc.
[{"type":"text","content":"High Lung Levels of Active Triphosphate Predicted with Oral AT-527 for COVID-19 Patients Data Supportive of AT-527 550 mg BID Dosing Regimen BOSTON, March 06, 2021 (GLOBE NEWSWIRE) -- Atea Pharmaceuticals, Inc. (Nasdaq: AVIR) (“Atea”), a clinical-stage biopharmaceutical company, today presented results from the Phase 1 study of AT-527 in healthy volunteers at the 28th Annual Conference on Retroviruses and Opportunistic Infections (CROI) in a Science Spotlight presentation. AT-527 is an orally administered, direct-acting antiviral developmental agent derived from Atea’s purine nucleotide prodrug platform and is in Phase 2 clinical development for the treatment of COVID-19. AT-527 targets SARS-CoV-2 ribonucleic acid (RNA) polymerase (nsp12), a highly conserved gene which is responsible for both viral RNA replication and transcription. Given this preferential conserved target site, it is anticipated that the antiviral activity of AT-527 will continue even in the presence of naturally-evolving variants which are now emerging. “We were delighted to present these encouraging results at CROI. Since the respiratory tract is the initiation site of the SARS-CoV-2 infection, these data demonstrate the potential for AT-527, our oral antiviral, to have meaningful clinical uptake in the lungs. Specifically, the data demonstrating rapid attainment of steady state with a fast build-up of trough levels enables us to predict that there should be exposure of drug in the lung above levels that are needed to inhibit viral replication,” said Jean-Pierre Sommadossi, Ph.D., Chief Executive Officer and Founder of Atea Pharmaceuticals. “In addition, these results show that AT-527 was well tolerated with a favorable safety and pharmacokinetic profile and are supportive of the dosing regimen for the upcoming Phase 3 program.” In the Phase 1 study, 20 healthy volunteers were randomized 1:1 to receive oral AT-527 550 mg twice daily (BID) or matching placebo for 5 days. The purpose of this study was to assess the safety and pharmacokinetics (PK) of AT-527 in healthy volunteers and to predict human lung exposure of intracellular AT-9010, the active triphosphate (TP) metabolite of AT-527. Safety assessments included adverse events (AEs), vital signs, electrocardiograms (ECGs), and standard safety laboratory tests. Intensive PK sampling, performed after the firs...