Tara Bancroft's questions to Mersana Therapeutics (MRSN) leadership • Q2 2025
Question
Tara Bancroft of TD Cowen asked for expectations regarding the upcoming second-half 2025 data for EMILY, inquiring about the minimum follow-up period, the number of patients to be included, and the efficacy benchmarks Mersana aims to meet or exceed.
Answer
President and CEO Dr. Martin Huber explained that the data will be based on the 45+ patients enrolled across Dose A and Dose B cohorts. He noted that Dose A will have a longer follow-up duration, but Dose B will have sufficient data to assess efficacy and safety. Dr. Huber reiterated that an objective response rate (ORR) in the 20s and a progression-free survival (PFS) of 16 weeks would be considered a strong result compared to the standard of care's 5% ORR and 6-7 week PFS.