NCT06173362 · University of California, Davis
Abiraterone and Prednisone or Darolutamide for the Treatment of Advanced Prostate Cancer
What this study is about
This phase II trial compares the effects, good and/or bad of abiraterone and prednisone or darolutamide alone in treating patients with prostate cancer that may have spread from where it first started to nearby tissue, lymph nodes, or distant parts of the body (advanced). Androgens (male hormones) can cause the growth of prostate tumor cells.
View original scientific description
This phase II trial compares the effects, good and/or bad of abiraterone and prednisone or darolutamide alone in treating patients with prostate cancer that may have spread from where it first started to nearby tissue, lymph nodes, or distant parts of the body (advanced). Androgens (male hormones) can cause the growth of prostate tumor cells. Abiraterone acetate lowers the amount of androgens made by the body. This may help stop the growth of prostate tumor cells that need androgen to grow. Darolutamide blocks the use of androgens by the tumor cells. Prednisone is used to lessen inflammation and lower the body's immune response. Researchers want to compare the side effects of standard of care (SOC) abiraterone and prednisone or darolutamide alone in treating patients with advanced prostate cancer.
Interventions
DRUG
Abiraterone
Given abiraterone
PROCEDURE
Biospecimen Collection
Undergo collection of blood samples
DRUG
Darolutamide
Given darolutamide
DRUG
Prednisone
Given prednisone
Primary outcome measures
Incidence of grade 3 or higher adverse events
Time frame: At 12 months
Will be defined and graded by National Cancer Institute Common Terminology Criteria for Adverse Events version 5.0 (NCI CTCAE v 5.0).
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
- 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
- Sacramento, California
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 Mar 13, 2026 · Source of record for eligibility and locations