Reported Sunday, Zymeworks Presents Phase 1 Data For ZW191 ADC Showing 78.6% cORR In FRα-Positive And 47.4% In FRα-Negative Platinum-Resistant Ovarian Cancer Patients At ESMO 2026
ZW191 demonstrates compelling anti-tumor activity in platinum-resistant ovarian cancer patients regardless of FRα expression level
Confirmed objective response rate (cORR) of 78.6% in FRα-positive (≥75% at PS2+) platinum-resistant ovarian cancer patients and 47.4% in FRα-negative patients (<75% at PS2+) across all dose levels studied
Median duration of response was not reached at the time of data cutoff, and median progression-free survival was 7.6 months across ovarian and endometrial cancer cohorts
Patient recruitment in dose optimization cohorts completed, with favorable tolerability profile and broad therapeutic window supporting continued clinical development
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