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    Researchers Question FDA's Use of Surrogate Endpoints for Cancer Drug Approvals

    Two researchers are questioning the US Food and Drug Administration's (FDA) use of surrogate endpoints in approving new oncology drugs and the agency's failure to more strictly enforce postmarketing study requirements for these drugs, according to a letter appearing in JAMA Internal Medicine . Drugmakers have increasingly relied on surrogate endpoints to support the approval for new cancer drugs. Instead of demonstrating improvements in overall survival, often called "t...