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A Study of INCB123667 in Participants With Platinum-Resistant Ovarian Cancer With Cyclin E1 Overexpression

A Phase 2, Single-Arm Study of INCB123667 in Participants With Platinum-Resistant Ovarian Cancer With Cyclin E1 Overexpression (MAESTRA 1)

Status
Recruiting
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07023627
Acronym
MAESTRA 1
Enrollment
160
Registered
2025-06-17
Start date
2025-11-12
Completion date
2027-10-24
Last updated
2026-03-16

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

Conditions

Ovarian Cancer

Keywords

INCB123667

Brief summary

This study will evaluate the safety and efficacy of INCB123667 in Participants With Platinum-Resistant Ovarian Cancer (PROC) With Cyclin E1 Overexpression.

Interventions

Administered orally twice daily (BID).

Sponsors

Incyte Corporation
Lead SponsorINDUSTRY
ENGOT Foundation
CollaboratorUNKNOWN
GOG Foundation
CollaboratorNETWORK

Study design

Allocation
NON_RANDOMIZED
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
FEMALE
Age
18 Years to 99 Years
Healthy volunteers
No

Inclusion criteria

* Histological diagnosis of a high-grade serous epithelial ovarian, fallopian tube, or primary peritoneal cancer. * Have platinum-resistant disease: * Participants who have only had 1 line of platinum-based therapy must have received at least 4 cycles of a platinum-containing regimen. * Participants who have received 2 to 4 lines of platinum-based therapy must have progressed on or within 6 months after the last dose of platinum. * Willingness to undergo a pretreatment biopsy. Note: Tissue from a fresh pretreatment biopsy is preferred, however an archival sample is acceptable as long as the sample is no older than 5 years. * Received at least 1 and no more than 4 prior lines of systemic therapy following the initial diagnosis, after which single-agent therapy is considered an appropriate next therapeutic option. * Must have received bevacizumab unless there was a contraindication for its use. * If the tumor tests positive for FRα, participants must have received mirvetuximab soravtansine unless there is an exception for its use on medical grounds.

Exclusion criteria

* Have endometrioid, clear cell, mucinous, or sarcomatous histology, mixed tumors containing any of these histologies, or low-grade/borderline ovarian cancer. * Have primary platinum-refractory disease: either did not respond (CR or PR) to first-line platinum-containing therapy or progressed on or within 3 months after the last dose of the first line platinum-containing therapy. * The tumor tests positive for FRα but the participant has not received mirvetuximab soravtansine for any reason other than medical contraindication. * Clinically significant or uncontrolled cardiac disease within 6 months before the first dose of study drug. * Known active CNS metastases and/or carcinomatous meningitis. * Known additional malignancy that is progressing or requires active treatment. Other protocol-defined Inclusion/

Design outcomes

Primary

MeasureTime frameDescription
Objective Response by IRCUp to 2 yearsDefined as having a confirmed best overall response of complete response (CR) or partial response (PR), as determined by independent review committee (IRC) assessment per Response Evaluation Criteria in Solid Tumors (RECIST) v1.1.

Secondary

MeasureTime frameDescription
Duration of Response (DOR) by IRCUp to 2 yearsDefined as the time from the earliest date of CR or PR contributing to a subsequently confirmed CR or PR until the earliest date of disease progression, as determined by IRC assessment per RECIST v1.1, or death due to any cause, whichever occurs first.
Progression-Free Survival (PFS) by IRCUp to 2 yearsDefined as the time from the date of first dose of study drug until the earliest date of disease progression as determined by IRC assessment per RECIST v1.1, or death due to any cause, whichever occurs first.
Overall Survival (OS)Up to 2 yearsDefined as the time from the date of first dose of study drug until death due to any cause.
Objective Response by InvestigatorUp to 2 yearsDefined as having a confirmed best overall response of CR or PR, as determined by investigator assessment per RECIST v1.1.
DOR by investigatorUp to 2 yearsDefined as the time from the earliest date of CR or PR contributing to a subsequently confirmed CR or PR until the earliest date of disease progression, as determined by investigator assessment per RECIST v1.1, or death due to any cause, whichever occurs first.
Treatment Emergent Adverse Events (TEAE'S)Up to 2 years and 30 daysAdverse events reported for the first time or worsening of a pre-existing event after first dose of study drug until 30 days after the last dose of study drug or the start of new anticancer therapy, whichever occurs first.
PFS by InvestigatorUp to 2 yearsDefined as the time from the date of first dose of study drug until the earliest date of disease progression, as determined by investigator assessment per RECIST v1.1, or death due to any cause, whichever occurs first.
TEAEs leading to dose interruptions, dose reductions or discontinuation of study treatmentUp to 2 years and 30 daysTEAEs leading to dose interruptions, dose reductions or discontinuation of study treatment.

Countries

Australia, Belgium, Japan, Puerto Rico, Spain, Switzerland, United Kingdom, United States

Contacts

CONTACTIncyte Corporation Call Center (US)
medinfo@incyte.com1.855.463.3463
CONTACTIncyte Corporation Call Center (ex-US)
eumedinfo@incyte.com+800 00027423
STUDY_DIRECTORIncyte Medical Monitor

Incyte Corporation

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Mar 17, 2026