A Study of Raludotatug Deruxtecan With or Without Bevacizumab as First-Line Maintenance Treatment in Non-HRD-Positive Advanced Ovarian Cancer (MK-5909-006, (ENGOT-ov102/GOG-3141/ REJOICE-Ovarian 04)

Prior treatment

• Has received 1L platinum-based chemotherapy without bevacizumab and have a response of SD or PR at the time of screening
• Has received prior systemic anticancer therapy, with the exception of the first-line platinum-based chemotherapy required by the inclusion criteria
• Has not recovered from major surgery or has ongoing surgical complications
• Has active inflammatory bowel disease requiring immunosuppressive medication or previous history of inflammatory bowel disease
• Has clinically severe pulmonary compromise resulting from intercurrent pulmonary illnesses including, but not limited to, any underlying pulmonary disorder or prior pneumonectomy

Other illness

• Has non-serous or non-endometrioid high-grade epithelial histology, nonepithelial ovarian cancers, borderline tumors, mucinous tumor, seromucinous tumor that is predominately mucinous, malignant Brenner's tumor, and undifferentiated carcinoma
• Has current, clinically relevant bowel obstruction including obstruction related to underlying EOC, abdominal fistula or gastrointestinal perforation, intra-abdominal abscess, or evidence of rectosigmoid involvement by pelvic exam
• HIV-infected participants with a history of Kaposi's sarcoma and/or multicentric Castleman disease
• Has known additional malignancy that is progressing or has required active treatment within the past 3 years
• Has active infection requiring systemic therapy

Lab values

• Has a homologous recombination deficiency (HRD)-positive, unknown, or inconclusive tumor status as determined by the central laboratory

Other

• The main exclusion criteria include but are not limited to the following:

• The main inclusion criteria include but are not limited to the following:
• Has a new, histologically confirmed diagnosis of International Federation of Gynecology and Obstetrics (FIGO) Stage III or Stage IV epithelial ovarian cancer (EOC) (high grade serous or high grade endometrioid), fallopian tube cancer, or primary peritoneal cancer
• Has undergone primary debulking surgery (PDS) or interval debulking surgery (IDS)
• Has completed first-line (1L) platinum-based chemotherapy, with a response of stable disease, partial response, complete response or no evidence of disease per protocol
• Has provided tumor tissue that is not previously irradiated
• Who have AEs due to previous anticancer therapies must have recovered to Grade ≤1 or baseline (except alopecia or vitiligo), as assessed by the physician investigator
• Human immunodeficiency virus (HIV)-infected participants must have well-controlled HIV on antiretroviral therapy (ART)