Ashiq Mubarack's questions to Mersana Therapeutics (MRSN) leadership • Q3 2024
Question
Ashiq Mubarack from Citi questioned whether XMT-1660's effect would differ based on prior use of Enhertu versus Trodelvy and asked about the long-term development plans for gynecological tumors.
Answer
CEO Martin Huber stated they do not expect a difference, as resistance is payload-related (TOPO1 inhibition), and their payload is not a substrate for Pgp efflux pumps, a common resistance mechanism. Chief Development Officer Mohan Bala added that there is a significant unmet need in both endometrial cancer post-chemo/checkpoint inhibitors and in platinum-sensitive ovarian cancer, confirming these remain areas of strategic interest for development.