Baricitinib plus Remdesivir shows promise for treating COVID-19

December 11, 2020

WHAT:

The combination of baricitinib, an anti-inflammatory drug, and remdesivir, an antiviral, reduced time to recovery for people hospitalized with COVID-19, according to clinical trial results published in the New England Journal of Medicine. The study was supported by the National Institute of Allergy and Infectious Diseases (NIAID), part of the National Institutes of Health.

The clinical trial is the second iteration of the NIH Adaptive COVID-19 Treatment Trial (ACTT-2), a study protocol to evaluate therapeutics for people hospitalized with COVID-19. Remdesivir is a broad-spectrum antiviral treatment developed by Gilead Sciences, Inc. Baricitinib was discovered by Incyte and licensed to Eli Lilly and Company, and marketed under the brand name Olumiant. It is approved in more than 70 countries as a treatment for adults with moderately-to-severely active rheumatoid arthritis. Researchers hypothesized that because many severe symptoms of COVID-19 are caused by a poorly regulated inflammatory response, a therapeutic designed to target inflammation could be helpful for patients. The primary results of this study were first announced in September.

The ACTT-2 trial opened on May 8, 2020 and enrolled a total of 1,033 volunteer participants at sites in eight countries. Once enrolled, participants were randomized to receive a treatment regimen of either oral baricitinib tablets and intravenous (IV) remdesivir or oral placebo tablets and IV remdesivir.

In the study, the combination of baricitinib and remdesivir reduced median time to recovery in hospitalized COVID-19 patients from eight days to seven days. Patients who required high-flow oxygen or non-invasive ventilation during their hospitalization appeared to have had the largest benefit: their median time to recovery was shortened from 18 days to ten days. In addition, participants' conditions at day 15 of the study (as measured by an eight-category ordinal scale which ranked the severity of their condition) was significantly improved when they received the two therapeutics combined. Recipients of the two treatments also had slightly fewer serious adverse effects.

The researchers caution that comparing this COVID-19 treatment regimen versus those with other therapeutics, such as dexamethasone, is difficult without additional comparison studies. These results do appear to show that baricitinib plus remdesivir can benefit some COVID-19 patients and the combination deserves further clinical study, according to the researchers.
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The research was partially supported by NIAID grants UM1AI148684, UM1AI148576, UM1AI148573, UM1AI148575, UM1AI148452, UM1AI148685, UM1AI148450, and UM1AI148689. It also received support from the National Cancer Institute (NCI) under Contract 75N91019D00024, Task Order 75N91020F00010. For more information about the study, search clincialtrials.gov using identifier NCT04401579.

ARTICLE:

Kalil et al. Baricitinib plus remdesivir for the treatment of hospitalized adults with Covid-19. A randomized double-blind placebo-controlled trial. New England Journal of Medicine DOI: 10.1056/NEJMoa2031994 (2020).

WHO:

John Beigel, M.D., associate director for clinical research in NIAID's Division of Microbiology and Infectious Diseases, is available for comment.

CONTACT:

To schedule interviews, please contact Elizabeth Deatrick, (301) 402-1663, elizabeth.deatrick@nih.gov.

NIAID conducts and supports research--at NIH, throughout the United States, and worldwide--to study the causes of infectious and immune-mediated diseases, and to develop better means of preventing, diagnosing and treating these illnesses. News releases, fact sheets and other NIAID-related materials are available on the NIAID website.

About the National Institutes of Health (NIH): NIH, the nation's medical research agency, includes 27 Institutes and Centers and is a component of the U.S. Department of Health and Human Services. NIH is the primary federal agency conducting and supporting basic, clinical, and translational medical research, and is investigating the causes, treatments, and cures for both common and rare diseases. For more information about NIH and its programs, visit http://www.nih.gov/.

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