Tyler Van Buren's questions to Allogene Therapeutics Inc (ALLO) leadership • Q2 2025
Question
Tyler Van Buren inquired about the success criteria for the ALPHA-three study's futility analysis, specifically asking what would constitute a positive outcome for the Minimal Residual Disease (MRD) conversion rates between the treatment and observation arms.
Answer
David Chang, Co-Founder, President, & CEO, explained that a delta of approximately 30% in the MRD conversion rate would be considered meaningful. He drew parallels to the pivotal trials for Yescarta and BRYANZI in the second-line setting, where complete remission rate differences of 33% and 27%, respectively, led to statistically significant and clinically meaningful benefits in event-free survival.