NCT05327010 · National Cancer Institute (NCI)
Testing the Combination of the Anti-cancer Drugs ZEN003694 (ZEN-3694) and Talazoparib in Patients With Advanced Solid Tumors, The ComBET Trial
What this study is about
This phase II trial tests whether ZEN003694 (ZEN-3694) in combination with talazoparib works to shrink tumors in patients with solid tumors that are unlikely to be cured or controlled with treatment and that may have spread from where it first started to nearby tissue, lymph nodes, or distant parts of the body (advanced).
View original scientific description
This phase II trial tests whether ZEN003694 (ZEN-3694) in combination with talazoparib works to shrink tumors in patients with solid tumors that are unlikely to be cured or controlled with treatment and that may have spread from where it first started to nearby tissue, lymph nodes, or distant parts of the body (advanced). Another aim of this study is to find out if, and how, patients' genes influence their response to this specific drug combination.
Interventions
DRUG
BET Bromodomain Inhibitor ZEN-3694
Given PO
PROCEDURE
Biopsy Procedure
Undergo tumor biopsy
PROCEDURE
Biospecimen Collection
Undergo blood sample collection
PROCEDURE
Diagnostic Imaging Testing
Undergo diagnostic imaging
DRUG
Talazoparib
Given PO
Primary outcome measures
Objective response rate (ORR)
Time frame: From initiation of treatment to first response
Systemically assessed per Response Evaluation Criteria in Solid Tumors (RECIST) version (v) 1.1. ORR = complete response + partial response. Complete response is defined as the disappearance of all target or non-target lesions. Partial response is defined as at least a 30% decrease in the sum of the diameters of target or non-target lesions.
Who can participate
This study lists these criteria on ClinicalTrials.gov. A study coordinator reviews eligibility during screening — this page does not determine whether you qualify.
Inclusion criteria
- Patients must have histologically confirmed malignancy that is metastatic or unresectable and for which standard curative or palliative measures do not exist or are no longer effective
- Patients must have a tumor lesion that can be biopsied with 'low' or 'minimal' risk and at least one measurable disease site, as defined by Response Evaluation Criteria in Solid Tumors (RECIST) version (v) 1.1
- Note: Tumor lesions that are situated in a previously irradiated area may or may not be considered measurable
- Patients in cohorts 1, 2, and 4 should have at least one relevant mutation. Patients enrolled in cohorts 1-3 do not require that PARP inhibitor (i) be the immediate prior therapy to be eligible for the trial. Patients should sign a screening consent that will allow the review of local next generation sequencing (NGS) or equivalent Clinical Laboratory Improvement Act (CLIA)-certified assay results by MD Anderson's Precision Oncology Decision Support (PODS) tea
Where
- Duarte, California
- Irvine, California
- La Jolla, California
- Los Angeles, California
- Newport Beach, California
- Sacramento, California
- San Diego, California
- Aurora, Colorado
- New Haven, Connecticut
- Trumbull, Connecticut
- Gainesville, Florida
- Atlanta, Georgia
And 20 more locations — see the full list below.
Related conditions & keywords
Frequently asked questions
What is a clinical trial?
A clinical trial is a research study that tests new medical treatments, drugs, devices, or procedures to determine their safety and effectiveness. Trials are carefully designed and monitored to protect participants while advancing medical knowledge.
Is it safe to participate?
Clinical trials follow strict safety guidelines and ethical standards. Trials must be reviewed and approved, and participants are closely monitored by medical professionals throughout the study. You can withdraw at any time if you choose.
Will I be compensated?
Many clinical trials offer compensation for your time, travel expenses, and inconvenience. The specific compensation varies by study and will be discussed during the screening process. All study-related medical care is typically provided at no cost to participants.
Will I receive a placebo instead of treatment?
When effective treatment exists, participants typically receive either the standard treatment plus the study intervention, or the standard treatment plus placebo. You would not be denied effective care. Placebos are primarily used when no proven treatment is available, or in addition to standard care. Your trial consent form will clearly explain what treatments you may receive.
Can I leave a trial if I change my mind?
Absolutely. Participation in clinical trials is completely voluntary. You have the right to withdraw from the study at any time, for any reason, without penalty or loss of benefits to which you are otherwise entitled.
How long does a clinical trial last?
Trial duration varies widely depending on the study design and purpose. Some trials last just a few weeks, while others may continue for months or years. The study coordinator will provide specific timeline information during your screening call.
Data: ClinicalTrials.gov · synced Jul 10, 2026 · Source of record for eligibility and locations