Epithelial Ovarian CancerPhase 3NCT07811271
Efficacy and Safety of BG-C9074 With Bevacizumab Compared With Bevacizumab in Adults With Ovarian, Fallopian Tube, or Primary Peritoneal Cancers
A Phase 3 study testing BG-C9074 and Bevacizumab in people with Epithelial Ovarian Cancer and Fallopian Tube Cancer, run by BeOne Medicines.
Trial 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. Read more about this study
- Who is it for?
- Ages 18 years and older, women only
- Conditions the study is for
- Epithelial Ovarian Cancer, Fallopian Tube Cancer, Primary Peritoneal Cancer
- What is being tested?
- BG-C9074 and Bevacizumab
- Type of treatment
- Injection or infusion
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 600 participants
- Where
- No sites listed yet
- Study dates
- Oct 2026to 31 Mar 2033
- Phase
- Phase 3
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 years and older
- Women only
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- Able to provide a signed and dated written informed consent prior to any study-specific procedures, sampling, or data collection.
- Eastern Cooperative Oncology Group (ECOG) Performance Status ≤ 1.
- Participants must have a histologically confirmed diagnosis of epithelial high-grade ovarian, fallopian tube or primary peritoneal carcinoma (serous, endometrioid, or clear cell).
- 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.
- Participants must have adequate organ function.
- 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.
Who cannot join
- Participants have ovarian, fallopian tube, or peritoneal cancer of nonepithelial origin.
- Participants have either a germline or somatic BReast CAncer gene (BRCA) mutation as per local test.
- Participants who will receive poly-adenosine diphosphate ribose polymerase (PARP) inhibitor as maintenance therapy per standard of care and investigator discretion.
- Participants have a history of allergic reactions or hypersensitivity to the active ingredients and excipients of the drug products and other monoclonal antibodies.
- Participants had previous transient ischemic attack, cerebrovascular accident, or subarachnoid hemorrhage within 6 months prior to randomization
- Participants have evidence of bleeding diathesis or significant coagulopathy (in the absence of anticoagulation therapy).
- Note: Other protocol defined Inclusion/Exclusion criteria may apply.
Trial locations and contacts
No sites are listed yet. Contact the study team or a site near you to ask about taking part.
About this study
Official title: 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)
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.
Read the 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.
- Being tested
- BG-C9074, Bevacizumab
- Medical subject headings
- Carcinoma, Ovarian Epithelial, Fallopian Tube Neoplasms
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
BG-C9074Drug
Administered by Intravenous infusion
BevacizumabDrug
Administered by Intravenous infusion
| Study group | Role | What they receive |
|---|---|---|
| Arm A: BG-C9074 + Bevacizumab | Experimental | BG-C9074 will be administered first, followed by bevacizumab. Receives: Drug: BG-C9074; Drug: Bevacizumab |
| Arm B: Bevacizumab | Active comparator | Bevacizumab will be administered alone. Receives: Drug: Bevacizumab |
What is being measured
The primary outcome is the main question the study is designed to answer.
Progression-Free survival (PFS) assessed by Blinded Independent Central Review (BICR)
PFS 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.
Measured: Up to 5 years
Secondary outcomes (9)
Overall Survival (OS)
OS is defined as the time from randomization to death due to any reason.
Measured: Up to 5 years
PFS, as Assessed by Investigator
PFS is defined as time from randomization to the date of disease progression by Investigator based on RECIST v1.1 or death, whichever occurs first.
Measured: Up to 5 years
PFS2, as Assessed by Investigator
PFS2, 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.
Measured: Up to 5 years
Time to Next Treatment
Time 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.
Measured: Up to 5 years
Number of Participants with Treatment-Emergent Adverse Events, Treatment-Related Adverse Events, and Serious Adverse Events
An 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:
- Results in death
- Is life-threatening
- Requires inpatient hospitalization or prolongation of existing hospitalization
- Results in persistent or significant disability/incapacity
- Is a congenital anomaly/birth defect
Measured: From first dose of study drug up to 30 days after last dose, up to 24 months
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 Scores
The 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).
Measured: Baseline and up to approximately 2 years
Change from Baseline in EORTC QLQ -Ovarian Cancer Module (OV28) Abdominal/GI Symptoms Domain Score
The 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.
Measured: Baseline and up to approximately 2 years
Time to Deterioration (TTD) of GHS/QoL, Role Functioning, and Physical Functioning Domain Scores as Measured via EORTC QLQ - F17
TTD 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.
Measured: Up to 5 years
Time to deterioration (TTD) of Abdominal/GI Symptoms as Measured via EORTC QLQ - OV28
TTD 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.
Measured: Up to 5 years
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted10 Sep 2026
- Study startOct 2026 (estimated)
- Primary completion30 Nov 2029 (estimated)
- Study completion31 Mar 2033 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Epithelial Ovarian CancerStudies of the same condition, open and under way.
- More trials run by BeOne MedicinesThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase 3
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Enrolment
- 600 participants (estimated)
Sponsor and investigators
- Lead sponsor
- BeOne Medicines
- Sponsor type
- Industry (pharma, biotech, devices)
- Collaborators
- GOG Foundation, Latin American Cooperative Oncology Group (LACOG), European Network of Gynaecological Oncological Trial Groups (ENGOT), Asia-Pacific Gynecologic Oncology Trials Group
- Responsible party
- Sponsor
- Investigators
- Study Director, Study director, BeOne Medicines
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT07811271
- Sponsor's protocol ID
- BG-C9074-301
- Other IDs
- 2026-527172-84-00, GOG-3144, ENGOT-ov108, APGOT-OV29
- Status last verified
- Sep 2026
- First submitted
- 3 Sep 2026
- Last updated
- 10 Sep 2026
- Results posted
- No
- FDA-regulated drug
- Yes
- FDA-regulated device
- No
- Individual data sharing
- Yes: BeOne shares data on completed studies responsibly and provides qualified scientific and medical researchers access to data and supporting documentation for clinical trials in dossiers for medicines and indications after submission and approval in the United States, China, and Europe. Clinical trials supporting subsequent local approvals, new indications, or combination products are eligible for sharing once corresponding regulatory approvals are achieved. BeOne shares data only when permitted by applicable data privacy and security laws and regulations, when it is feasible to do so without compromising the privacy of study participants, and other considerations. Qualified researchers with appropriate competencies who are engaged in novel scientific research may submit a request for participant-level data with a research proposal for BeOne review. Research teams must include a biostatistician and sign a Data Sharing Agreement prior to receiving access to clinical trial data.