Johnson & Johnson temporarily halts COVID-19 vaccine trial

Oct. 14, 2020

Johnson & Johnson said it has temporarily paused further dosing in all of its COVID-19 vaccine candidate clinical trials, including the Phase 3 ENSEMBLE trial, due to an unexplained illness in a study participant, according to a press release from the company.

“Following our guidelines, the participant’s illness is being reviewed and evaluated by the ENSEMBLE independent Data Safety Monitoring Board (DSMB) as well as our internal clinical and safety physicians,” the company said, adding that adverse events, such as illnesses and accidents, are an expected part of any large clinical study.

The Janssen Pharmaceutical Companies, a subsidiary of Johnson & Johnson, developed the investigational vaccine (also known as Ad.26.COV2.S) and is leading the clinical trial as regulatory sponsor. Janssen, the National Institute of Allergy and Infectious Diseases (NIAID), part of the National Institutes of Health (NIH), and the Biomedical Advanced Research and Development Authority (BARDA), part of the U.S. Department of Health and Human Services' Office of the Assistant Secretary for Preparedness and Response, are funding the trial.

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