The Impact of Variability in Patient Exposure During Premarket Clinical Development on Postmarket Safety Outcomes.

We characterized the size of the premarket safety population for 278 small-molecule new molecular entities (NMEs) and 61 new therapeutic biologics (NTBs) approved by the US Food and Drug Administration (FDA) between October 1, 2002, and December 31, 2014, evaluating the relationship of premarket safety population size to regulatory characteristics and postmarket safety outcomes. The median size of the safety population was 1,044, and was lower for NTBs than NMEs (median: 920 vs. 1,138, P = 0.

Postmarketing Safety-Related Regulatory Actions for New Therapeutic Biologics Approved in the United States 2002-2014: Similarities and Differences With New Molecular Entities.

We examined the relationship of regulatory and review characteristics to postmarketing safety-related regulatory actions for 61 new therapeutic biologics (NTBs) approved between October 1, 2002 and December 31, 2014. We also compared NTBs with small-molecule new molecular entities (NMEs) on these measures. Postmarketing safety-related regulatory actions were defined as a safety-related withdrawal or a safety-related update to a safety section of the label through June 30, 2018.