Phase 3 Study of INCB123667 Plus Bevacizumab Versus Bevacizumab Alone as First-Line Maintenance Therapy in Ovarian Cancer Overexpressing Cyclin E1
MAESTRA 3
A Phase 3, Double-Blind, Randomized, Controlled Study of INCB123667 in Combination With Bevacizumab Versus Bevacizumab Alone as First-Line Maintenance Therapy in Participants With Advanced Epithelial Ovarian, Fallopian Tube, or Primary Peritoneal Cancer Overexpressing Cyclin E1 (MAESTRA 3)
4 other identifiers
interventional
590
0 countries
N/A
Brief Summary
The purpose of this study is to evaluate INCB123667 in Combination With Bevacizumab Versus Bevacizumab Alone as First-Line Maintenance Therapy in Participants With Advanced Epithelial Ovarian, Fallopian Tube, or Primary Peritoneal Cancer Overexpressing Cyclin E1.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P50-P75 for phase_3 ovarian-cancer
Started Dec 2026
Typical duration for phase_3 ovarian-cancer
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
Click on a node to explore related trials.
Study Timeline
Key milestones and dates
First Submitted
Initial submission to the registry
August 26, 2026
CompletedFirst Posted
Study publicly available on registry
September 1, 2026
CompletedStudy Start
First participant enrolled
December 1, 2026
ExpectedPrimary Completion
Last participant's last visit for primary outcome
May 1, 2032
Study Completion
Last participant's last visit for all outcomes
May 1, 2034
October 2, 2026
October 1, 2026
5.4 years
August 26, 2026
October 1, 2026
Conditions
Keywords
Outcome Measures
Primary Outcomes (1)
Progression-Free Survival (PFS) by BICR
Defined as the time from randomization until the first documented disease progression or disease recurrence as determined by blinded independent central review (BICR) per Response Evaluation Criteria in Solid Tumors (RECIST) v1.1, or death due to any cause, whichever occurs first.
Up to approximately 5 years
Secondary Outcomes (11)
Overall Survival (OS)
Up to approximately 7 years
Progression-Free Survival (PFS) by investigator
Up to approximately 5 years
Progression-Free Survival on the First Subsequent Therapy (PFS2)
Up to approximately 7 years
Second Progression-Free Survival (PFS)
Up to approximately 7 years
Time to First Subsequent Therapy (TFST)
Up to approximately 7 years
- +6 more secondary outcomes
Study Arms (2)
Treatment Group A (TGA)
EXPERIMENTALBevacizumab plus INCB123667 at the protocol defined dose.
Treatment Group B (TGB)
EXPERIMENTALBevacizumab plus matching placebo at the protocol defined dose.
Interventions
Bevacizumab will be administered at the protocol defined dose.
Eligibility Criteria
You may qualify if:
- Newly diagnosed, histologically confirmed, FIGO Stage III or IV, high-grade serous, high-grade endometrioid, or clear cell ovarian, fallopian tube, or primary peritoneal cancer.
- Underwent debulking surgery prior to randomization (either PDS or IDS).
- Completed first-line platinum-based chemotherapy in combination with bevacizumab prior to randomization.
- Received a minimum of 6 cycles (and no more than 8 cycles) of platinum-taxane chemotherapy.
- Received at least 2 infusions of bevacizumab concurrently with the last 2 to 3 cycles of chemotherapy.
- No clinical evidence of disease recurrence (ie, NED following surgery) or progression (ie, CR/PR/SD per RECIST v1.1) on completion of platinum-based chemotherapy.
- Tumor overexpresses cyclin E1.
- Has a local HRD (positive or negative) or BRCA test result available. Participants with BRCA wild-type must have a local HRD result based on a validated test.
- ECOG performance status of 0, 1, or 2.
You may not qualify if:
- Ovarian, fallopian tube, or peritoneal cancer of nonepithelial origin or low-grade ovarian cancer.
- Deleterious tumor BRCA mutation per local test.
- Eligible for treatment with a PARPi as maintenance therapy.
- Known additional malignancy that progressed or requires active treatment, or history of other malignancy within 3 years prior to randomization.
- History of any clinically significant or uncontrolled cardiovascular disease within 6 months prior to randomization.
- Clinically significant gastrointestinal abnormality.
- History of thromboembolism and having been on therapeutic anticoagulation for less than 2 weeks prior to randomization.
- Current treatment with any strong CYP3A4/CYP3A5 inhibitor or inducer or treatment with a strong CYP3A4/CYP3A5 inhibitor or inducer within 5 half-lives or 28 days (whichever is shorter) prior to randomization.
- Platelets: \< 100 × 109/L
- Hemoglobin: \< 9 g/dL or \< 5.6 mmol/L
- ANC: \< 1.5 × 109/L
- ALT: ≥ 2.5 × ULN or ≥ 5 × ULN for participants with liver metastases
- AST: ≥ 2.5 × ULN or ≥ 5 × ULN for participants with liver metastases
- Total bilirubin: ≥ 1.5 × ULN
- Albumin: \< 2.5 g/dL
- +2 more criteria
Contact the study team to confirm eligibility.
Sponsors & Collaborators
Related Links
MeSH Terms
Conditions
Interventions
Condition Hierarchy (Ancestors)
Intervention Hierarchy (Ancestors)
Study Officials
- STUDY DIRECTOR
Incyte Medical Monitor
Incyte Corporation
Central Study Contacts
Study Design
- Study Type
- interventional
- Phase
- phase 3
- Allocation
- RANDOMIZED
- Masking
- QUADRUPLE
- Who Masked
- PARTICIPANT, CARE PROVIDER, INVESTIGATOR, OUTCOMES ASSESSOR
- Purpose
- TREATMENT
- Intervention Model
- PARALLEL
- Sponsor Type
- INDUSTRY
- Responsible Party
- SPONSOR
Study Record Dates
First Submitted
August 26, 2026
First Posted
September 1, 2026
Study Start (Estimated)
December 1, 2026
Primary Completion (Estimated)
May 1, 2032
Study Completion (Estimated)
May 1, 2034
Last Updated
October 2, 2026
Record last verified: 2026-10
Data Sharing
- IPD Sharing
- Will share
- Shared Documents
- STUDY PROTOCOL, SAP
- Time Frame
- Data will be shared after the primary publication or 2 years after the study has ended for market authorized products and indications.
- Access Criteria
- Data from eligible studies will be shared with qualified researchers according to the criteria and process described in the Data Sharing section of the www.incyteclinicaltrials.com website. For approved requests, the researchers will be granted access to anonymized data under the terms of a data sharing agreement.
Incyte shares data with qualified external researchers after a research proposal is submitted. These requests are reviewed and approved by a review panel on the basis of scientific merit. All data provided is anonymized to respect the privacy of patients who have participated in the trial in line with applicable laws and regulations. The trial data availability is according to the criteria and process described on https://www.incyte.com/our-company/compliance-and-transparency