Trial shows remdesivir accelerates recovery from advanced COVID-19

Andre Kalil, M.D.

Hospitalized patients with advanced COVID-19 and lung involvement who received remdesivir recovered faster than similar patients who received placebo, according to a preliminary data analysis from a randomized, controlled trial involving 1,063 patients, which began on Feb. 21.

The trial (known as the Adaptive COVID-19 Treatment Trial, or ACTT), sponsored by the National Institute of Allergy and Infectious Diseases (NIAID), part of the National Institutes of Health, is the first clinical trial launched in the United States to evaluate an experimental treatment for COVID-19.

The first trial participant in the ACTT trial was an American who was repatriated after being quarantined on the Diamond Princess cruise ship that docked in Yokohama, Japan, and volunteered to participate in the study at the first study site, UNMC/Nebraska Medicine, in February 2020. A total of about 450 people across 68 sites ultimately joined the study — 47 in the United States and 21 in countries in Europe and Asia.

Andre Kalil, M.D., a physician and researcher at UNMC and its hospital partner, Nebraska Medicine, has been leading the trial at UNMC.

“My colleagues and I are pleased to be part of this study which is showing good preliminary results,” said Dr. Kalil, a professor of infectious diseases in the UNMC Department of Internal Medicine. “We all are working diligently and swiftly to do the science in the appropriate way to help in this pandemic. It also gives us hope that soon this drug may be used widely.”

In its National Quarantine Unit in Omaha, UNMC/Nebraska Medicine housed 13 people who were repatriated Feb. 17 by the U.S. State Department from the Diamond Princess cruise ship. Eleven of the 13 tested positive for COVID-19 and were monitored and have since been released. Nebraska Medicine also monitored and/or treated other hospitalized patients in the community.

An independent data and safety monitoring board overseeing the trial met on April 27 to review data and shared their interim analysis with the study team. Based upon their review of the data, they noted that remdesivir was better than placebo from the perspective of the primary endpoint, time to recovery, a metric often used in influenza trials. Recovery in this study was defined as being well enough for hospital discharge or returning to normal activity level.

Preliminary results indicate that patients who received remdesivir had a 31% faster time to recovery than those who received placebo (p<0.001). Specifically, the median time to recovery was 11 days for patients treated with remdesivir compared with 15 days for those who received placebo. Results also suggested a survival benefit, with a mortality rate of 8.0% for the group receiving remdesivir versus 11.6% for the placebo group (p=0.059).

More detailed information about the trial results, including more comprehensive data, will be available in a forthcoming report. As part of the U.S. Food and Drug Administration’s commitment to expediting the development and availability of potential COVID-19 treatments, the agency has been engaged in sustained and ongoing discussions with Gilead Sciences regarding making remdesivir available to patients as quickly as possible, as appropriate. The trial closed to new enrollments on April 19. NIAID also will provide an update on the plans for the ACTT trial moving forward. This trial was an adaptive trial designed to incorporate additional investigative treatments.

Remdesivir, developed by Gilead Sciences Inc., is an investigational broad-spectrum antiviral treatment administered via daily infusion for 10 days. It has shown promise in animal models for treating SARS-CoV-2 (the virus that causes COVID-19) infection and has been examined in various clinical trials.


  1. Jerrie Dayton says:

    Proud of the work you've done!

  2. Ruben E Quiros says:

    Congrats Andre! Great job!

  3. Carmen Sirizzotti says:

    Awesome news! Thank you for all your work in this initiative

  4. Tom O’Connor says:

    Awesome, Andre. Thank you so much for making us proud!

  5. Ajit Kumar Shakya says:

    Congratulations puri teem ko

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