Abstract
Background
Early antiviral therapy was effective in the treatment of COVID-19. We assessed the efficacy and safety of combined interferon beta-1b and remdesivir treatment in hospitalized COVID-19 patients.
Methods
We conducted a multicentre, prospective open-label, randomized-controlled trial involving high-risk adults hospitalized for COVID-19. Patients were randomly assigned to a 5-day interferon beta-1b 16 million units daily and remdesivir 200mg loa ding on day 1 followed by 100mg daily on day 2 to 5 (combination-group), or to remdesivir only of similar regimen (control-group) (1:1). The primary end-point was the time to complete alleviation of symptoms (NEWS2 = 0).
Results
Two-hundred and twelve patients were enrolled. The median days of starting treatment from symptom-onset was 3 days. The median age was 65 years and 159 patients (75%) had chronic disease. The baseline demographics were similar. There was no mortality. For the primary-endpoint, the combination-group was significantly quicker to NEWS2 = 0 (4 versus 6.5 days; hazard-ratio [HR],6.59; 95% confidence-interval [CI],6.1-7.09; p < 0.0001) when compared to the control-group. For the secondary endpoints, the combination-group was quicker to negative NPS VL (6 versus 8 days; HR,8.16; 95% CI,7.79-8.52; p < 0.0001) and develop seropositive IgG (8 versus 10 days; HR,10.78; 95% CI,9.98-11.58; p < 0.0001). All adverse events resolved upo n follow-up. Combination group (HR,4.1 95%CI,1.9-8.6, p < 0.0001), was the most significant independent factor associated with NEWS2 = 0 on day 4.
Conclusions
Early treatment with interferon beta-1b and remdesivir was safe and better than remdesivir only in alleviating symptoms, shorten viral shedding and hospitalization with earlier seropositivity in high-risk COVID-19 patients.
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