Clinical trials · California
High Risk Prostate Cancer clinical trials in California
We’re tracking 59 recruiting high risk prostate cancer studies with a site in California — including Early Phase 1, Phase 1, Phase 1/Phase 2, Phase 2, Phase 2/Phase 3 and Phase 3 studies, each written for real people, not researchers.
Recruiting studies in California
- NCT05665738Recruiting
Two-visit HDR radiation to treat early prostate cancer
This study tests a radiation treatment delivered in two fractions (two sessions) as the only treatment for certain early-stage prostate cancers. It may help you avoid other treatments, like hormone therapy, depending on whether your cancer and health history fit the study.
San Francisco, CaliforniaAges 18 years+ - NCT06888102RecruitingEarly Phase 1
Epigenetic therapy before prostate surgery
This trial tests a short course of 'epigenetic therapy' (drugs that change how genes work) given before prostate removal surgery. The goal is to see if it can improve treatment effects and help shrink or control the tumor.
Los Angeles, CaliforniaAges 18 years+ - NCT04812366RecruitingPhase 2
Genetic test-guided treatment before prostate surgery
This trial tests different drugs before prostate surgery based on a person's genetic profile. It aims to find better treatments for high-risk prostate cancer that hasn't spread yet.
Sacramento, CaliforniaAges 18 years+ - NCT06613100RecruitingPhase 1
Xaluritamig before prostate surgery for high-risk prostate cancer
This study tests an experimental drug called xaluritamig given before surgery for men with localized prostate cancer that is intermediate or high risk. The goal is to see if it can help shrink the cancer before the prostate is removed.
San Francisco, CaliforniaAges 18 years+ - NCT06952803RecruitingPhase 3
Testing a new drug for men with BRCA-related prostate cancer
This trial tests whether adding a new drug (saruparib) to standard radiation and hormone therapy can help prevent prostate cancer from spreading to other parts of the body. It is for men with high-risk prostate cancer that has a BRCA gene mutation.
La Jolla, CaliforniaAges 18 years+ - NCT03821246RecruitingPhase 2
Atezolizumab and other drugs before prostate surgery for high-risk cancer
This Phase 2 trial tests whether giving immunotherapy (atezolizumab) plus another drug before surgery can shrink or control high-risk localized prostate cancer. The goal is to improve outcomes by treating the cancer early, before radical prostatectomy.
San Francisco, CaliforniaAges 18 years+ - NCT04552509Recruiting
Radiation study for localized prostate cancer using a focused beam
This trial tests whether a precise type of radiation (called stereotactic body radiotherapy) can treat localized prostate cancer. It may help people who fit certain cancer stage and health criteria get treatment planning tailored to them.
Laguna Hills, CaliforniaAges Any age - NCT04700332RecruitingPhase 2
Test of PyL PET/CT for high-risk or returning prostate cancer
This Phase 2 study checks how well a scan called PyL PET/CT can help find prostate cancer that is high-risk or has come back by blood test. The goal is to improve how doctors detect spread and guide the next treatment steps.
Irvine, CaliforniaAges 18 years+ - NCT04787744RecruitingPhase 2/Phase 3
Test standard prostate cancer treatment with or without targeted spot radiation
This study tests whether adding targeted local treatment (like radiation to a few spots seen on scans) improves outcomes for some people with limited (oligometastatic) prostate cancer. It compares standard systemic therapy alone versus standard therapy plus PET-scan–guided spot treatment.
West Los Angeles, CaliforniaAges 18 years+ - NCT05396872Recruiting
Decision-making study about gene testing for advanced prostate cancer
This study looks at how Veterans with advanced prostate cancer make decisions about gene testing and possible targeted treatments, and how patients and caregivers understand the information. It may help by improving decision support for people facing germline and tumor testing choices.
San Francisco, CaliforniaAges 18 years+ - NCT05593497RecruitingPhase 2
Study of hormone therapy plus capivasertib before prostate surgery
This Phase 2 trial tests whether adding capivasertib to intensified hormone therapy (leuprolide plus abiraterone) given before prostate surgery can improve outcomes for men with high-risk localized prostate cancer that has a specific tumor marker (PTEN loss). You would also have extra blood tests, scans, and a tissue biopsy for tumor testing.
West Los Angeles, CaliforniaAges 18 years+ - NCT05806515RecruitingPhase 2
Carboplatin before surgery for high-risk BRCA prostate cancer
This trial tests giving the chemotherapy drug carboplatin before surgery to treat people with high-risk prostate cancer and an inherited BRCA1 or BRCA2 gene change. The goal is to shrink or control the cancer before an operation and improve outcomes.
Irvine, CaliforniaAges 18 years+ - NCT05946213RecruitingPhase 3
Shorter radiation treatment for high-risk prostate cancer
This trial tests whether a shorter course of radiation works as well as the usual longer course for people with high-risk prostate cancer. The goal is to keep cancer control while possibly reducing treatment time and inconvenience.
Orange, CaliforniaAges 18 years+ - NCT06056830RecruitingPhase 3
PET scan for high-risk prostate cancer before surgery
This trial uses a special PET scan to find prostate cancer cells before surgery. It may help doctors see where the cancer is located and if it has spread.
Orange, CaliforniaAges 18 years+ - NCT06242470RecruitingPhase 1
Study of MGC026 for advanced solid tumors
This trial tests a new drug called MGC026 that targets a protein called B7-H3 on cancer cells, aiming to shrink or slow different advanced solid tumors. It is an early-phase study to find the right dose and check safety.
Los Angeles, CaliforniaAges 18 years+ - NCT06384222RecruitingPhase 2
MRI scan to monitor response to abiraterone before prostate surgery
This trial tests whether a special MRI scan can show how well the drug abiraterone works against high-risk prostate cancer before surgery. If you have high-risk prostate cancer that hasn't spread, you might be able to take abiraterone for a few months and then have a prostatectomy, with the MRI helping your doctor see the drug's effect.
San Francisco, CaliforniaAges 18 years+ - NCT06391034RecruitingPhase 2
MRI scan with pyruvate for prostate cancer
This trial uses a special MRI scan (with hyperpolarized pyruvate, a naturally occurring substance) to look at prostate cancer in more detail. It aims to help doctors understand how the cancer is responding to treatment or how it might behave.
San Francisco, CaliforniaAges 18 years+ - NCT06440005RecruitingPhase 1
Testing AGX101 for advanced solid tumors
This study tests a new drug called AGX101 for people with advanced solid tumors that have not responded to other treatments. The goal is to see if it is safe and if it can shrink tumors or slow their growth.
Los Angeles, CaliforniaAges 18 years+ - NCT04945642Recruiting
Radiation combination therapy for intermediate to high-risk prostate cancer
This trial studies a combination of two radiation types—high-dose-rate brachytherapy and stereotactic body radiotherapy—to treat certain intermediate- to high-risk prostate cancers. It may help by aiming radiation closely at the prostate while also targeting the cancer from outside the body.
Los Angeles, CaliforniaAges 18 years+ - NCT06567743RecruitingPhase 2
Study of a new virus therapy for high-risk bladder cancer
This trial tests a new virus-based medicine, cretostimogene grenadenorepvec, given directly into the bladder for people with high-risk non-muscle-invasive bladder cancer. It may help prevent the cancer from coming back, especially for those who have not had BCG treatment or whose cancer did not respond to BCG.
Orange, CaliforniaAges 18 years+ - NCT06785636RecruitingPhase 1/Phase 2
New drug combination for advanced prostate cancer
This study tests a new drug (pocenbrodib) alone or combined with another hormone therapy (darolutamide) for men with advanced prostate cancer that has spread. It is for those who have already tried Pluvicto and one other hormone therapy, but not yet chemotherapy.
Fountain Valley, CaliforniaAges 18 years+ - NCT06990542RecruitingPhase 2
Focused radiation therapy for intermediate and high-risk prostate cancer
This trial tests a more precise radiation therapy that targets tumors seen on MRI or special scans, aiming to treat prostate cancer while reducing side effects. It is for men who have not had prostate surgery or previous radiation to the area.
La Jolla, CaliforniaAges 18 years+ - NCT06995053Recruiting
Prostate cancer radiation therapy with motion monitoring
This trial tests a precise radiation technique for prostate cancer that tracks the prostate during treatment. It aims to deliver higher radiation doses more safely, which may improve outcomes.
Los Angeles, CaliforniaAges 18 years+ - NCT07054346RecruitingPhase 1
Comparing two radiation drugs for high-risk prostate cancer before surgery
This trial tests two radioactive drugs (Lu-177 and Ac-225 PSMA-617) given before prostate removal surgery in men with high-risk prostate cancer that hasn't spread far. The goal is to see which drug works better at targeting cancer cells.
San Francisco, CaliforniaAges 18 years+
Where these studies are running in California
Institutions with a site for the recruiting high risk prostate cancer studies listed above.
- University of California, San Francisco · 6 studies
- University of California, Irvine Medical Center / UC Irvine Health · 3 studies
- Cedars-Sinai Medical Center · 2 studies
- VA Greater Los Angeles Healthcare System, West Los Angeles, CA · 2 studies
- Advanced Urology
- Cancer and Blood Specialty Clinic
- City of Hope Comprehensive Cancer Center
- City of Hope Orange County Lennar Foundation Cancer Center
What taking part in a high risk prostate cancer study involves
A screening visit first
Before anything else, the study team checks whether you fit — usually a visit with some tests. You can stop at any point, and screening is typically free.
Care at a nearby site
Study visits happen at a clinic or hospital taking part. Many studies cover the cost of the study treatment and related visits, and some reimburse travel.
You stay in control
Taking part is voluntary and you can leave a study at any time, for any reason, without affecting your regular care.
The team decides eligibility
Our fit check is a helpful first read, not a decision. The study team makes the final call after reviewing your health history.
Common questions
- Are there high risk prostate cancer clinical trials in California?
- Yes. We're currently tracking 59 recruiting high risk prostate cancer studies with a site in California, each rewritten in plain language so you can see what it's testing and who it's for.
- How do I find out if I qualify for a high risk prostate cancer study in California?
- Each study lists its eligibility rules — age, diagnosis, prior treatments. On every trial page we explain these in plain language and offer a short, optional pre-screen for a fit read. The study team makes the final decision.
- Do I have to live in California to take part?
- Not necessarily. These studies have a site in California, but eligibility is about your health, not your address — some people travel to take part, and a few studies reimburse travel. The study team can tell you what's required.
- Does it cost anything to join a high risk prostate cancer trial?
- Using Clin2 is always free. Many trials cover the study treatment and related visits; some reimburse travel. The study team explains exactly what's covered before you decide.
Not the right time?
New high risk prostate cancer studies open in California regularly. Set up a health profile and we’ll quietly watch for studies that fit you and email you when one opens.
Clin2 helps you find and understand clinical trials and does not provide medical advice. Study data comes from ClinicalTrials.gov. Talk with your doctor about whether a specific trial is right for you.