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FDA Office of Prescription Drug Promotion Issues Warning Letter to ImmunityBio
March 25, 2026
WASHINGTON, March 25 -- The U.S. Department of Health and Human Services Food and Drug Administration issued the following warning letter to ImmunityBio Inc. from its Office of Prescription Drug Promotion:

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Recipient: Richard Adcock, President and Chief Executive Officer, ImmunityBio, Inc., 9920 Jefferson Blvd, Culver City, CA 90232, United States

Issuing Office: The Office of Prescription Drug Promotion (OPDP), United States

RE: BLA 76133 . . .

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