Clinical trial Recruiting at 1 site Phase 2 Interventional Ages 18 and up Men only

Comparing Abiraterone with Prednisone or Darolutamide for Advanced Prostate Cancer

Official title: A Pragmatic Phase II Study Evaluating Tolerability in Prostate Cancer Patients Treated With Abiraterone + Prednisone or Darolutamide

Run by University of California, Davis · NCT06173362 · Data updated 2026-11-12

This study is testing whether a combination of abiraterone and prednisone works better than darolutamide alone for people with advanced prostate cancer by looking at side effects and changes in PSA levels over a year.

Quick facts

PhasePhase 2
Study typeInterventional
Ages18 Years and up
SexMen only
Enrollment75 (estimated)
SponsorUniversity of California, Davis
Academic / other
Drugs / interventionsprednisone
Locations1 site (Sacramento, California)
StatusRecruiting
StartedNovember 9, 2023
Main results expectedNovember 2026
Study endsMay 2027
Registry record updatedMarch 13, 2026
Trial IDNCT06173362 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates include adult males aged 18 and older with histologically confirmed advanced prostate adenocarcinoma who are appropriate for treatment with either abiraterone and prednisone or darolutamide.

Probably not a fit

Patients who have previously been treated with abiraterone or darolutamide for more than 28 days prior to enrollment may not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This phase II trial evaluates the effects of abiraterone combined with prednisone versus darolutamide alone in patients with advanced prostate cancer. The study aims to assess the tolerability of these treatments and their impact on prostate-specific antigen (PSA) levels over a period of one year. Patients will be monitored for side effects and will undergo blood sample collection throughout the study. The trial includes a follow-up period of three years after treatment completion.

Why it matters

Potential benefit: If successful, this study could provide new insights into effective treatment options for advanced prostate cancer, potentially improving patient outcomes.

How similar studies have gone: Other studies have shown promise in using androgen deprivation therapies for advanced prostate cancer, making this approach a continuation of established treatment strategies.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Ability to understand and willingness to sign an informed consent form
* Histologically confirmed prostate adenocarcinoma
* Advanced prostate cancer appropriate for treatment with abiraterone acetate plus prednisone or darolutamide as assessed by the treating physician
* Participants are encouraged to be currently treated with androgen deprivation therapy (ADT) or having undergone bilateral orchiectomy
* Performance status 0 - 2 (Karnofsky ≥ 50%)
* Age ≥ 18 years at time of consent
* Life expectancy ≥ 6 months per investigator discretion
* Ability and stated willingness to adhere to the study visit schedule and other protocol procedures/requirements for the duration of the study

Exclusion Criteria:

* Have been on either abiraterone or darolutamide for \> 28 days prior to initiating enrollment
* Any condition that in the opinion of the investigator would prohibit the understanding or rendering of informed consent or interfere with the participant's safety or compliance while on trial

Where it's running

  • University of California Davis Comprehensive Cancer Center
    Sacramento, California, United States
    Recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.