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Efficacy and Safety of BG-C9074 With Bevacizumab Compared With Bevacizumab in Adults With Ovarian, Fallopian Tube, or Primary Peritoneal Cancers

A Phase 3, Open-label, Multicenter, Randomized Study of BG-C9074 With Bevacizumab Versus Bevacizumab as First-line Maintenance Therapy for Patients With Epithelial Ovarian, Fallopian Tube, or Primary Peritoneal Cancers Who Have Not Progressed After First-line Platinum-based Chemotherapy Plus Bevacizumab (Starstone-Ovarian 301/GOG-3144/ENGOT-ov108/APGOT-OV29)

Status
Not yet recruiting
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07811271
Enrollment
600
Registered
2026-09-10
Start date
2026-10-01
Completion date
2033-03-31
Last updated
2026-09-10

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Epithelial Ovarian Cancer, Fallopian Tube Cancer, Primary Peritoneal Cancer

Brief summary

The purpose of this study is to evaluate the safety and efficacy of BG-C9074 with bevacizumab (Arm A) versus bevacizumab monotherapy (Arm B) in adults with epithelial ovarian, fallopian tube, or primary peritoneal cancers who have not progressed after firstline platinum-based chemotherapy plus bevacizumab.

Detailed description

Ovarian cancer is a disease where abnormal cells in the ovaries or fallopian tubes grow out of control and form tumors. Common early signs include belly bloating, pelvic or back pain, feeling full quickly when eating, and frequent urination. BG-C9074 is a targeted cancer medicine called an antibody-drug conjugate (ADC). ADC consists of an antibody linked to a drug that can kill cancer cells. The antibody part of BG-C9074 specifically attaches to a protein called B7-H4 that is found on the surface of cancer cells. After it attaches to B7-H4, BG-C9074 enters the cancer cell where the drug causes DNA damage and cell death. Bevacizumab is an approved medicine used to treat these cancers along with chemotherapy. It works by cutting off the blood supply that helps the tumor grow, which may help keep the cancer under better control. The purpose of this study is to test if BG-C9074 is safe and effective in women with advanced epithelial ovarian, fallopian tube or primary peritoneal cancer when it is given in combination with bevacizumab as a first-line maintenance treatment. This study has 2 treatment groups. Participants will be randomly assigned (by chance, like flipping a coin) to receive one of the treatments listed below: * Arm A: BG-C9074 + Bevacizumab * Arm B: Bevacizumab This study will enroll approximately 600 participants. The overall time to participate in this study may be up to 5 years. Participants will make regular visits to the clinic for treatment, health checks, blood tests, and for tumor and imaging tests.

Interventions

Administered by Intravenous infusion

DRUGBevacizumab

Administered by Intravenous infusion

Sponsors

BeOne Medicines
Lead SponsorINDUSTRY
GOG Foundation
CollaboratorNETWORK
Latin American Cooperative Oncology Group (LACOG)
CollaboratorUNKNOWN
European Network of Gynaecological Oncological Trial Groups (ENGOT)
CollaboratorOTHER
Asia-Pacific Gynecologic Oncology Trials Group
CollaboratorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
FEMALE
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

1. Able to provide a signed and dated written informed consent prior to any study-specific procedures, sampling, or data collection. 2. Eastern Cooperative Oncology Group (ECOG) Performance Status ≤ 1. 3. Participants must have a histologically confirmed diagnosis of epithelial high-grade ovarian, fallopian tube or primary peritoneal carcinoma (serous, endometrioid, or clear cell). 4. Participants are newly diagnosed International Federation of Gynecology and Obstetrics (FIGO) stage III or IV and have received primary debulking surgery or interval debulking surgery. 5. Participants must have adequate organ function. 6. Women of childbearing potential must be willing to use a highly effective method of birth control and agree not to donate eggs (ova, oocytes) or freeze/store eggs for the duration of the study and for ≥ 7 months after the last dose of study treatment.

Exclusion criteria

1. Participants have ovarian, fallopian tube, or peritoneal cancer of nonepithelial origin. 2. Participants have either a germline or somatic BReast CAncer gene (BRCA) mutation as per local test. 3. Participants who will receive poly-adenosine diphosphate ribose polymerase (PARP) inhibitor as maintenance therapy per standard of care and investigator discretion. 4. Participants have a history of allergic reactions or hypersensitivity to the active ingredients and excipients of the drug products and other monoclonal antibodies. 5. Participants had previous transient ischemic attack, cerebrovascular accident, or subarachnoid hemorrhage within 6 months prior to randomization 6. Participants have evidence of bleeding diathesis or significant coagulopathy (in the absence of anticoagulation therapy). Note: Other protocol defined Inclusion/

Design outcomes

Primary

MeasureTime frameDescription
Progression-Free survival (PFS) assessed by Blinded Independent Central Review (BICR)Up to 5 yearsPFS is defined as the time from randomization to the date of disease progression by BICR based on Response Evaluation Criteria in Solid Tumors (RECIST) v1.1 or death, whichever occurs first.

Secondary

MeasureTime frameDescription
Overall Survival (OS)Up to 5 yearsOS is defined as the time from randomization to death due to any reason.
PFS, as Assessed by InvestigatorUp to 5 yearsPFS is defined as time from randomization to the date of disease progression by Investigator based on RECIST v1.1 or death, whichever occurs first.
PFS2, as Assessed by InvestigatorUp to 5 yearsPFS2, as assessed by investigator, is defined as time from randomization to the documented disease progression on first subsequent systemic therapy by Investigator or death due to any cause, whichever occurs first.
Time to Next TreatmentUp to 5 yearsTime to next treatment is defined as the time from randomization to the start of the first subsequent anticancer therapy after discontinuation of randomized treatment, or death due to any cause.
Number of Participants with Treatment-Emergent Adverse Events, Treatment-Related Adverse Events, and Serious Adverse EventsFrom first dose of study drug up to 30 days after last dose, up to 24 monthsAn adverse event is defined as any unfavorable and unintended sign (including an abnormal laboratory finding), symptom, or disease (new or exacerbated) temporally associated with the use of study treatment, whether considered related to study treatment or not. A serious adverse event is any untoward medical occurrence that, at any dose, meets one or more of the criteria listed in the view of either the investigator or the Sponsor: 1. Results in death 2. Is life-threatening 3. Requires inpatient hospitalization or prolongation of existing hospitalization 4. Results in persistent or significant disability/incapacity 5. Is a congenital anomaly/birth defect
Change from Baseline in European Organization for Research and Treatment of Cancer Quality of Life Questionnaire (EORTC QLQ) - F17 Global Health Status/Quality of Life (GHS/QoL), Role Functioning, and Physical Functioning Domain ScoresBaseline and up to approximately 2 yearsThe EORTC QLQ-F17 is a 17-item questionnaire that covers GHS/QoL and five functional scales (Physical, Role, Emotional, Cognitive, and Social). All items are scored on a 4-point - Likert scale (1 = "Not at all"; 4 = "Very much"), except the two items of the GHS/QoL-scale that are scored on a 7-point scale (1 = "Very poor"; 7 = "Excellent"). Scores are averaged and transformed to a 0 to 100 scale. Higher scores in GHS/QoL and functional scales indicate better health-related quality of life (HRQoL).
Change from Baseline in EORTC QLQ -Ovarian Cancer Module (OV28) Abdominal/GI Symptoms Domain ScoreBaseline and up to approximately 2 yearsThe EORTC QLQ-OV28 includes a 28-item questionnaire for evaluating ovarian cancer-specific symptoms and concerns in participants of cancer clinical studies. These include items that assess symptoms in the abdominal/gastrointestinal domain. Scores are averaged and transformed to a 0 to 100 scale; higher scores indicate a greater symptom burden, while lower scores reflect fewer symptoms.
Time to Deterioration (TTD) of GHS/QoL, Role Functioning, and Physical Functioning Domain Scores as Measured via EORTC QLQ - F17Up to 5 yearsTTD of GHS/QoL is defined as the time from the date of randomization to the first confirmed clinically meaningful deterioration on the abdominal/gastrointestinal symptom domain of the EORTC QLQ-F17.
Time to deterioration (TTD) of Abdominal/GI Symptoms as Measured via EORTC QLQ - OV28Up to 5 yearsTTD of Abdominal/GI Symptoms is defined as the time from the date of randomization to the first confirmed clinically meaningful deterioration on the abdominal/gastrointestinal symptom domain of the EORTC QLQ-OV28.

Contacts

CONTACTBeOne Medicines
clinicaltrials@beonemed.com1.877.828.5568
STUDY_DIRECTORStudy Director

BeOne Medicines

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Sep 11, 2026