Auxora Versus Standard of Care for the Treatment of Severe or Critical COVID-19 Pneumonia: Results from a Randomized Controlled Trial
Abstract BACKGROUNDCalcium release-activated calcium (CRAC) channel inhibitors stabilize the pulmonary endothelium and block proinflammatory cytokine release, potentially mitigating respiratory complications observed in patients with COVID-19. This study aimed to investigate the safety and efficacy of Auxora, a novel, intravenously administered CRAC channel inhibitor, in adults with severe or critical COVID-19 pneumoniaMETHODSA randomized, controlled, open-label study of Auxora was conducted in adults with severe or critical COVID-19 pneumonia. Patients were randomized 2:1 to receive three doses of once-daily Auxora versus standard of care (SOC) alone. The primary objective was to assess safety and tolerability of Auxora. Additional outcomes included changes in clinical status based on an 8-point ordinal scale and the proportion of patients dying or requiring invasive mechanical ventilation in the 30 days after randomization.RESULTSIn total, 17 patients with severe and three with critical COVID-19 pneumonia were randomized to Auxora and nine with severe and one with critical COVID-19 pneumonia to SOC. Similar proportions of patients receiving Auxora and SOC experienced ≥1 adverse event (75% versus 80%, respectively). Fewer patients receiving Auxora experienced serious adverse events versus SOC (30% versus 50%, respectively). Two patients (10%) receiving Auxora and two (20%) receiving SOC died in the 30 days after randomization. Among patients with severe COVID-19 pneumonia, median time to recovery with Auxora was five days versus 12 days with SOC; recovery rate ratio was 1.87 (95%CI, 0.72, 4.89). Invasive mechanical ventilation was needed in 18% of patients with severe COVID-19 pneumonia receiving Auxora versus 50% receiving SOC (absolute risk reduction=32%; 95%CI, -0.07, 0.71). One intubation or death over 30 days would be prevented by treating 2.6 patients with Auxora. Outcomes measured by an 8-point ordinal scale were significantly improved for patients receiving Auxora, especially for patients with a baseline PaO2/FiO2=101-200.CONCLUSIONSAuxora demonstrated a favorable safety profile in patients with severe or critical COVID-19 pneumonia and improved outcomes in patients with severe COVID-19 pneumonia. The impact of Auxora on respiratory complications in patients with severe COVID-19 pneumonia will be further assessed in a planned randomized, blinded, placebo-controlled study.TRIAL REGISTRATIONClinicalTrials.gov,NCT04345614. Retrospectively registered 14April2020 - https://clinicaltrials.gov/ct2/show/NCT04345614