Eli Lilly and Co said the government-sponsored clinical trial of its COVID-19 antibody treatment similar to one taken by US President Donald Trump has been paused due to safety concerns.
Trump touted the Lilly drug, along with the antibody treatment from Regeneron Pharmaceuticals Inc that he received for his COVID-19, as tantamount to a cure in a video he posted last week.
The announcement comes one day after Johnson & Johnson said it was forced to pause a large high-profile trial of its experimental coronavirus vaccine because a volunteer fell ill. J&J said it does not yet know if that person was given the vaccine or a placebo.
AstraZeneca Plc's US trial for its experimental COVID-19 vaccine has also been on hold for over a month after a volunteer in its UK study fell ill. Trials of that vaccine resumed in other regions after a brief halt.
Lilly said earlier this month it was applying for emergency use authorisation (EUA) for the antibody drug, LY-CoV555, for patients with mild to moderate COVID-19 based on data from another clinical trial.
It is not uncommon to pause drug trials to investigate safety concerns, and such actions do not necessarily indicate a serious problem.
"Out of an abundance of caution, the ACTIV-3 independent data safety monitoring board (DSMB) has recommended a pause in enrollment," Lilly spokeswoman Molly McCully said in an emailed statement. "Lilly is supportive of the decision by the independent DSMB to cautiously ensure the safety of the patients participating in this study."
The Indianapolis-based drugmaker did not comment on the implications for the paused trial, called ACTIV-3, which is testing the treatment on COVID-19 patients who require hospitalisation, or on its other ongoing trials. It is also testing the drug in nursing homes to see if it can prevent staff and residents from getting infected.
The US Food and Drug Administration and the National Institutes of Health did not immediately reply to requests for comment.
Lilly began its ACTIV-3 trial in August and is aiming to recruit 10,000 patients primarily in the United States.
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