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Eli Lilly Ends Antibody Trial In Hospitalized COVID-19 Patients, Other Trials Go On

In this May 2020 file photo provided by Eli Lilly, a researcher tests possible COVID-19 antibodies in a laboratory in Indianapolis. On Monday, U.S. government officials announced they are putting an early end to a study testing an Eli Lilly antibody drug for people hospitalized with COVID-19 because it doesn't seem to help.
The Florida Channel
Leon County Judge John Cooper on June 30, 2022, in a screen grab from The Florida Channel.

The trial studied the efficacy of bamlanivimab in combination with the antiviral remdesivir on hospitalized COVID-19 patients. Researchers concluded the antibody treatment was "unlikely to help."

Eli Lilly & Co. is ending a clinical trial of its antibody drug bamlanivimab in hospitalized COVID-19 patients after federal researchers concluded the therapy produced no marked improvement.

The study of the monoclonal antibody called bamlanivimab was initially pausedby the company on Oct. 13 out of "an abundance of caution," because of a potential safety concern. For this particular study the therapy was being used in combination with remdesivir, an antiviral with emergency use authorization for the virus.

Remdesivir was among the medications President Trump received after contracting the coronavirus.

On Monday, the National Institutes of Health, which sponsored the trial, found the antibody treatment posed no significant safety risks for patients. However, researchers said, "bamlanivimab is unlikely to help hospitalized COVID-19 patients recover from this advanced stage of their disease."

The decision to end this study does not put an end to Lilly's investment in the experimental therapy. Company officials said they "remain confident ... that bamlanivimab monotherapy may prevent progression of disease for those earlier in the course of COVID-19."

The company and the NIH are pursuing several additional trials involving the antibody, which is designed to stop the virus from infecting cells. The trials target patients with less advanced stages of the disease.

Copyright 2020 NPR. To see more, visit

Corrected: October 27, 2020 at 12:00 AM EDT
An earlier version of this story incorrectly said President Trump had received bamlanivimab in combination with remdesivir while being treated for COVID-19. The president received only remdesivir, among other medications.
Vanessa Romo is a reporter for NPR's News Desk. She covers breaking news on a wide range of topics, weighing in daily on everything from immigration and the treatment of migrant children, to a war-crimes trial where a witness claimed he was the actual killer, to an alleged sex cult. She has also covered the occasional cat-clinging-to-the-hood-of-a-car story.