| Terminated | 3 | 20 | Canada, US, RoW | Upifitimab rilsodotin, XMT-1536 Antibody Drug Conjugate, Placebo | Mersana Therapeutics, GOG Foundation, European Network of Gynaecological Oncological Trial Groups (ENGOT) | High Grade Serous Ovarian Cancer, Fallopian Tube Cancer, Primary Peritoneal Cancer | 09/23 | 09/23 | | |