Early results from a clinical trial of the experimental drug Remdesivir reportedly show promising results in the treatment of those suffering from severe COVID-19, with most patients receiving the drug significantly improving within a week.

Although official results for multiple trials intended to evaluate the safety and efficacy of the drug have yet to be released, a video from researchers at the University of Chicago suggests that Remdesivir could be an effective treatment for the virus, according to a report from health news outlet STAT.

The University of Chicago recruited 125 COVID-19 patients for a clinical trial by the drug’s manufacturer Gilead Sciences, including 113 with the severe form of the disease. The video reportedly shows infectious disease specialist Dr. Kathleen Mullane discussing encouraging early results from the trial with colleagues at the university earlier in the week.