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March 9, 2026
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Episode 52, “Bayesian Borrowing in Phase 3 Trials”

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In this episode of "In the Interim…", Dr. Scott Berry and Dr. Kert Viele examine Bayesian borrowing in Phase 3 clinical trials, focusing on statistical handling of prior information and real-world FDA interactions.

Episode 52 of "In the Interim…" examines Bayesian borrowing in Phase 3 trials—how and when prior data may be incorporated, but only under careful scientific and regulatory scrutiny.

Dr. Scott Berry and Dr. Kert Viele dissect the REBYOTA case (FDA pre-agreed Bayesian integration of Phase 2 and 3) and the WATCHMAN device (static 50% discounting), highlighting criteria for appropriate borrowing, dynamic vs. static approaches, and the challenges of maintaining statistical integrity.

The discussion addresses cherry-picked priors and real FDA interaction. Listen to a discussion of using prior evidence in confirmatory trials. https://www.berryconsultants.com/resource/52-bayesian-borrowing-in-phase-3-trials

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