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November 10, 2025
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Episode 36, “The Saga of the Lecanemab Adaptive Phase II Trial”

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In Episode 36 of "In the Interim…", Dr. Scott Berry and Dr. Don Berry analyze the Phase II trial of Lecanemab (BAN2401) in Alzheimer’s disease, focusing on the application of adaptive Bayesian methods following persistent failures in Alzheimer’s drug development.

Dr. Scott Berry and Dr. Donald Berry break down the Lecanemab Phase II Alzheimer’s trial—a model of flexibility and efficiency after years of failed studies in the field.

The trial applied:

● 16 interim analyses plus a final readout, all published

● Response-adaptive randomization favoring promising doses

● Adaptive sample size from 300–800 patients

● Bayesian longitudinal modeling and multiple imputation for missing data

● Pre-specified probabilistic thresholds for Phase III transition and futility

Empirical evidence and adaptive methods drove precise, data-centered decisions. This approach set a new standard for informative results and adaptability in complex drug development.

Listen to the full conversation today: https://www.berryconsultants.com/resource/36-the-saga-of-the-lecanemab-adaptive-phase-ii-trial

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