Sean McCutcheon's questions to Compass Therapeutics Inc. (CMPX) leadership • Q2 2025
Question
Sean McCutcheon from Raymond James Financial asked about the necessary magnitude of PFS benefit for Tivesimig to be clinically meaningful over paclitaxel. He also inquired about the FDA's potential view on the intent-to-treat (ITT) versus the crossover-adjusted OS analysis.
Answer
CEO Thomas Schuetz stated the PFS analysis is powered for a hazard ratio of approximately 0.6, which recent market research suggests would be highly meaningful. He noted the high progression rate in the paclitaxel arm suggests its efficacy is low. Regarding the OS analysis methods, he said the company has not received specific feedback from the FDA on the difference between the ITT and the crossover-adjusted (RPSFT) analyses.