NCT06470243 · SWOG Cancer Research Network
Testing Whether the Addition of Carboplatin Chemotherapy to Cabazitaxel Chemotherapy Will Improve Outcomes Compared to Cabazitaxel Alone in People With Castrate-Resistant Prostate Cancer That Has Spread Beyond the Prostate to Other Parts of the Body
What this study is about
This phase III trial compares the effect of adding carboplatin to the the usual treatment chemotherapy drug cabazitaxel versus cabazitaxel alone in treating prostate cancer that keeps growing even when the amount of testosterone in the body is reduced to very low levels (castrate-resistant) and that has spread from where it first started (primary site) to other places in the body (metastatic).
View original scientific description
This phase III trial compares the effect of adding carboplatin to the standard of care chemotherapy drug cabazitaxel versus cabazitaxel alone in treating prostate cancer that keeps growing even when the amount of testosterone in the body is reduced to very low levels (castrate-resistant) and that has spread from where it first started (primary site) to other places in the body (metastatic). Carboplatin is in a class of medications known as platinum-containing compounds.
Interventions
PROCEDURE
Biospecimen Collection
Undergo blood sample collection
PROCEDURE
Bone Scan
Undergo bone scan
DRUG
Cabazitaxel
Given IV
DRUG
Carboplatin
Given IV
PROCEDURE
Chest Radiography
Undergo chest x-ray
PROCEDURE
Computed Tomography
Undergo CT or PET/CT
PROCEDURE
Magnetic Resonance Imaging
Undergo MRI
PROCEDURE
Positron Emission Tomography
Undergo PET/CT
DRUG
Prednisone
Given PO
Primary outcome measures
Radiographic progression-free survival (rPFS)
Time frame: From date of randomization to the first documentation of rPFS event, assessed up to 5 years
Will be assessed using response evaluation criteria in solid tumors (RECIST 1.1), progression of bone lesions using Prostate Cancer Working Group 2 (PCWG2) criteria, or occurrence of death due to any cause. RECIST 1.1 progression requires at least a 20% increase in the sum of diameters of target lesions and/or unequivocal progression of existing non-target lesions. PCWG2 bone lesion progression requires appearance of two or more new lesions seen on bone scan compared with bone scan at randomization.
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
- STEP 1 SCREENING REGISTRATION: NOTE: All participants must have biopsy tissue submitted to MD Anderson Cancer Center prior to randomization for alteration assessment. Participants must have determination of their AVPC-Molecular Pathologic Signature immunohistochemistry (MSIHC) status from central assessment by the MD Anderson Clinical Pathology Laboratory using Clinical Laboratory Improvement Act (CLIA) certified immunohistochemistry (IHC) assays for TP53, RB1 and PTEN. In addition, while not mandated, CLIA certified next generation sequencing (NGS) of tumor deoxyribonucleic acid (DNA) and/or circulating tumor derived DNA (ctDNA) assessment of AVPC-MS marker status will be collected from participants for whom it is available
- STEP 1 SCREENING REGISTRATION: Participants must have a histologically confirmed diagnosis of prostate cancer at the time of step 1 registration
- STEP 1 SCREENING REGISTRATION: Participants must have castrate-resistant prostate cancer and
Where
- Fayetteville, Arkansas
- Rogers, Arkansas
- Springdale, Arkansas
- Long Beach, California
- Lewes, Delaware
- Millville, Delaware
- Newark, Delaware
- Rehoboth Beach, Delaware
- Wilmington, Delaware
- Fort Lauderdale, Florida
- Boise, Idaho
- Caldwell, Idaho
And 120 more locations — see the full list below.
Collaborators
National Cancer Institute (NCI)
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 Jan 22, 2026 · Source of record for eligibility and locations