Wednesday, July 22, 2026 An immunotherapy platform study in platinum-resistant high grade serous ovarian cancer (IPROC): Sub-studies A and B: Durvalumab (D) + mecbotamab vedotin (BA3011) or ozuriftamab vedotin (BA3021)Comparison of two distinct treatment modalities and identification of molecularly defined subgroups that would allow to individualize the choice of initial treatment. Each sub-study has a Simon’s 2-stage design. If no response is seen (H0: ORR ≤ 5%) in the first 10 patients a planned biomarker review will be conducted to determine if biomarker expression eligibility should be amended or if the sub-study should close.MacKay HJ, Tinker AV, Nelson BH, Zamarin D, Odunsi AO, Lheureux S, Ellard S, Smrke A, Gaudreau P-O, Faulkner T, Upadhaya S, Zhou A, Tu W, Dancey J. CRI-CCTG-0003/IND.240 an immunotherapy platform study in platinum-resistant high grade serous ovarian cancer (IPROC): Sub-studies A and B: Durvalumab (D) + mecbotamab vedotin (BA3011) or ozuriftamab vedotin (BA3021) (ONLINE). Cancer Treatment and Research Communications 2026.https://www.sciencedirect.com/science/article/pii/S2468294226001711