A randomized phase II trial of docetaxel or cabazitaxel with or without darolutamide in men with metastatic castration-resistant prostate cancer
NCT ID NCT05762536
First seen Sep 10, 2026 · Last updated Sep 10, 2026
Summary
Taxane efficacy in metastatic prostate cancer is modest due to resistance development. Several clinical phase III studies in metastatic castration-naïve prostate cancer (mCNPC) patients have shown that adding an androgen receptor signalling inhibitor (ARSi) to patients receiving a taxane and androgen deprivation therapy (ADT) improves survival endpoints. Adding ARSi darolutamide to docetaxel+ADT in mCNPC patients resulted in a robust OS benefit (HR 0.68). Importantly, the combination of a taxane and darolutamide is not prone to a drug-drug interaction, while there is a detrimental CYP3A4 inducing effect in the case of enzalutamide, resulting in a significant and clinically relevant reduction of cabazitaxel plasma concentrations. The investigators have previously reported preclinical data showing that addition of an androgen receptor signaling inhibitor (ARSi) improves cabazitaxel efficacy, even in metastatic castration-resistant prostate cancer (mCRPC). As treatment options for mCRPC) patients are scarce and patients often develop drug resistance relatively early, a new treatment regimen for this population to delay drug resistance is highly desired. The investigators propose a randomized phase II trial to investigate the efficacy of docetaxel or cabazitaxel plus darolutamide compared to docetaxel or cabazitaxel monotherapy in men with metastatic CRPC, who have progressed on an ARSI.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Phase
-
Phase 2
Tests whether the treatment actually works, and watches for side effects, in a larger group.
- Participants
-
About 245 people
The number the study aims to enrol. It can still change while the study runs.
- Started
-
Nov 2023
- Expected to finish
-
May 2028
An estimate. End dates often move.
- Lead sponsor
-
Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
-
18 years and older
- Sex
-
Male participants only
- Healthy volunteers
-
Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: 1. Age ≥ 18 years; 2. A confirmed diagnosis of progressive mCRPC (progression according to Prostate cancer Working Group (PCWG) 3 criteria, castration defined as castrate levels of testosterone of \<0.5 ng/mL) with an indication for docetaxel or cabazitaxel. 3. Patients should have had disease progression previously on at least one ARSi (abiraterone, apalutamide, darolutamide or enzalutamide). ARSi administration is allowed both in the mCNPC and in the mCRPC setting. Previous co-administration of docetaxel in mCNPC (triplet-therapy) is allowed, if patients will receive cabazitaxel in this study. 4. WHO performance ≤ 2 5. Able and willing to sign the Informed Consent Form prior to screening evaluations 6. Adequate haematological, renal and liver function and chemistry. Exclusion Criteria: 1. Impossibility or unwillingness to take oral drugs 2. Hypersensitivity to taxanes 3. Known serious illness or medical unstable conditions that could interfere with this study requiring treatment (e.g. HIV, hepatitis, Varicella zoster or herpes zoster, organ transplants, kidney failure, serious liver disease (e.g. severe cirrhosis), cardiac and respiratory diseases) 4. Symptomatic peripheral neuropathy CTCAE grade ≥2 5. Docetaxel-rechallenge.
Get updates
Get notified about this study
Sign up to get updates when this study changes or when new studies for Metastatic castration resistant prostate cancer are added.
By submitting, you agree to our Terms of use
Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
-
The places running it
1 site. The list below names each one and where it is.
-
The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
-
A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
-
Erasmus MC Cancer Institute
RECRUITINGRotterdam, 3015GD, Netherlands
More trials for these conditions
Other studies related to the condition(s) this trial covers.
- Can a Cancer-Targeting drug slow advanced prostate cancer?
- Can a smart radiation drug hunt down prostate cancer cells?
- Can a new daily pill slow advanced prostate cancer?
- Can a radioactive injection extend life in advanced prostate cancer?
- Chemo combo vs. radioactive drug: which tames aggressive prostate cancer?
- Can a new pill outsmart resistant prostate cancer?