Clinical trials · California
Oncology clinical trials in California
We’re tracking 134 recruiting oncology studies with a site in California — including Phase 1, Phase 2, Phase 2/Phase 3 and Phase 3 studies, each written for real people, not researchers.
Recruiting studies in California
- NCT05176483RecruitingPhase 1
New drug combinations for advanced solid tumors
This trial tests a new drug called zanzalintinib, which may slow or shrink various types of advanced cancer. It is given together with other cancer treatments, and the study is looking at many different cancers including kidney, prostate, bladder, lung, liver, and more.
Palo Alto, CaliforniaAges 18 years+ - NCT05673148RecruitingPhase 3
Ablation treatment plus usual therapy for limited metastatic bowel cancer
This study tests whether adding “total ablation” (carefully destroying all visible small tumors using surgery, heat/cold treatment, and/or targeted radiation) to standard chemotherapy improves outcomes for people with limited spread of colorectal cancer. It may help by aiming to eliminate all known metastatic spots while you continue usual cancer treatment.
Beverly Hills, CaliforniaAges 18 years+ - NCT06661720RecruitingPhase 3
Tivozanib and pembrolizumab after kidney cancer surgery
This trial is testing if adding the targeted therapy tivozanib to the immunotherapy drug pembrolizumab (Keytruda) can help prevent kidney cancer from coming back after all known tumors have been removed by surgery.
Auburn, CaliforniaAges 18 years+ - NCT02523014RecruitingPhase 2
Drug combo for meningioma that keeps growing despite treatment
This Phase 2 trial tests several targeted medicines (given together or by specific assignment) for meningiomas inside the brain that are progressing or not fully removed after surgery. It may help slow the tumor’s growth and improve symptoms by blocking tumor growth pathways.
Antioch, CaliforniaAges 18 years+ - NCT05334069Recruiting
Blood test study for early cancer detection in patients
This study collects blood from people with cancer and people without cancer (or with possible cancer) to test whether new blood tests can detect cancer earlier. Your blood samples help researchers evaluate how well these tests work.
Arroyo Grande, CaliforniaAges 40–75 - NCT07321652RecruitingPhase 3
Sonrotoclax plus zanubrutinib for untreated CLL or SLL
This trial tests whether adding a new drug, sonrotoclax, to the standard treatment zanubrutinib works better for people with chronic lymphocytic leukemia (CLL) or small lymphocytic lymphoma (SLL) who haven't had treatment before. It's for patients aged 65 and older who need therapy due to symptoms or blood cell issues.
Los Angeles, CaliforniaAges 65 years+ - NCT07200830RecruitingPhase 3
Testing different schedules of a targeted radiation drug for advanced prostate cancer
This trial tests two different dosing schedules of a drug called Lutetium-177 PSMA RLT, which delivers radiation directly to prostate cancer cells. It is for men with advanced prostate cancer that has stopped responding to hormone therapy and has spread, who have not yet had chemotherapy for this stage of the disease.
Bakersfield, CaliforniaAges 18 years+ - NCT07143487Recruiting
Family communication after genetic testing for colon cancer
This trial studies how patients with newly diagnosed colon cancer share genetic test results with their family members. It aims to improve communication and support after learning about hereditary risk.
Arroyo Grande, CaliforniaAges 18 years+ - NCT06632327RecruitingPhase 3
Comparing treatment timing for stage II-IIIB lung cancer
This trial is for people with a certain type of lung cancer (non-small cell lung cancer) that can be surgically removed. It tests whether it is better to receive treatment before or after surgery to remove the cancer.
Antioch, CaliforniaAges 18 years+ - NCT06931340RecruitingPhase 3
Adding chemo to hormone therapy for advanced prostate cancer
This trial is for men with metastatic prostate cancer that has already spread beyond the pelvis. It tests whether adding a chemotherapy drug (docetaxel) to the usual hormone therapy plus apalutamide can help control the cancer better than hormone therapy alone.
Dublin, CaliforniaAges 18 years+ - NCT07283939Recruiting
Testing a tool to adjust chemo doses and reduce treatment delays
This trial tests a computer algorithm called PAGODA that helps doctors adjust chemotherapy doses for people with gastrointestinal cancers. The goal is to prevent unplanned treatment delays while keeping the treatment effective.
Arroyo Grande, CaliforniaAges 18 years+ - NCT07215910RecruitingPhase 3
Testing vorasidenib with temozolomide after radiation for advanced brain cancer
This trial tests whether adding the targeted drug vorasidenib to standard chemotherapy (temozolomide) after radiation helps people with a specific type of advanced brain cancer called IDH-mutant astrocytoma. It is for patients who have not had previous treatments like chemotherapy or radiation and whose tumors have certain genetic features.
Duarte, CaliforniaAges 12 years+ - NCT07293247RecruitingPhase 2
Targeted radiation after lung cancer surgery
This trial tests if targeted radiation after surgery can help people with non-small cell lung cancer who still have cancer in their lymph nodes after chemotherapy. Participants will have had surgery and chemotherapy before starting radiation.
Los Angeles, CaliforniaAges 18 years+ - NCT06632977RecruitingPhase 2
Matching targeted treatments to your prostate cancer's genetics
This trial is testing whether matching your cancer's specific genetic changes to a targeted treatment can help control metastatic prostate cancer that has stopped responding to standard hormone therapy and chemotherapy. You may receive a drug, a radioactive treatment, or a combination based on your tumor's molecular profile.
Chico, CaliforniaAges 18 years+ - NCT05174169RecruitingPhase 2/Phase 3
Adjuvant colon chemotherapy guided by tumor DNA results
This trial tests whether treatment for colon cancer after surgery can be guided by a blood test that looks for leftover cancer signals (ctDNA). It may help some people choose stronger or different chemo based on whether ctDNA is found after surgery.
Anaheim, CaliforniaAges 18 years+ - NCT06748222RecruitingPhase 3
Online mindfulness program for breast cancer survivors
This trial tests a 6-week online mindfulness program to help breast cancer survivors manage mild to moderate depression. You may qualify if you finished active treatment within the last 5 years and can use a digital device.
Anaheim, CaliforniaAges 18–50 - NCT05879926RecruitingPhase 3
Testing chemo after hormone therapy in premenopausal early breast cancer
This Phase 3 trial checks whether adding chemotherapy after standard hormone-blocking treatment works better for some premenopausal women with early-stage, ER-positive, HER2-negative breast cancer. It targets patients with limited lymph node spread and a lower-to-intermediate tumor “recurrence” risk score.
Anaheim, CaliforniaAges 18–60 - NCT07466316RecruitingPhase 3
Comparing chemo schedules for intermediate-risk rhabdomyosarcoma
This trial compares two different chemotherapy schedules for children and young adults with intermediate-risk rhabdomyosarcoma (a type of muscle cancer). One group gets a higher dose of chemotherapy over a shorter period, while the other gets a lower dose plus maintenance therapy for a longer time. The goal is to see which approach works better.
Duarte, CaliforniaAges Up to 50 years - NCT05705531Recruiting
Cardiac MRI study of heart health after Hodgkin lymphoma treatment
This study looks at how certain blood-related “growth patterns” connect to long-term heart health after treatment for classical Hodgkin lymphoma. It may help doctors better predict who could develop heart problems and how to monitor them over time.
Duarte, CaliforniaAges 7 years+ - NCT04093570Enrolling by invitationPhase 2
Extension study for people continuing ASTX727 from a prior trial
This study checks whether continuing ASTX727 for people who already benefited from it in an earlier Taiho study is safe and effective. It may be an option if you stayed on ASTX727 at the end of your parent study and your doctor felt it was helping you.
Fountain Valley, CaliforniaAges 18 years+ - NCT07691606RecruitingPhase 1
Testing a new drug for B-cell lymphoma that has come back
This trial tests a new medicine called ARC-02 for people with certain types of B-cell non-Hodgkin lymphoma (a cancer of the immune system) that has not responded well enough to at least two prior treatments. The goal is to see if this drug can help when other options are no longer working.
Los Angeles, CaliforniaAges 18 years+ - NCT07007312RecruitingPhase 3
Ziftomenib plus standard chemo for certain AML patients
This trial tests a new drug, ziftomenib, added to standard chemotherapy for adults with untreated acute myeloid leukemia (AML) who have specific gene changes (NPM1 mutation or KMT2A rearrangement). It aims to see if the combination works better than standard treatment alone.
Clovis, CaliforniaAges 18 years+ - NCT05317858RecruitingPhase 3
Open the brain’s blood barrier to treat lung cancer brain spots
This trial tests whether using focused ultrasound to temporarily open the brain’s blood barrier—plus standard immune therapy—can better treat non-small cell lung cancer (NSCLC) that has spread to the brain. It aims to help medicines reach the brain tumor spots more effectively, while still using the usual lung cancer treatment.
Newport Beach, CaliforniaAges 18–100 - NCT07022678RecruitingPhase 3
Xylitol dental wipes to reduce infection risk in childhood leukemia
This trial tests whether using xylitol dental wipes can lower the risk of bloodstream infections in children with acute myeloid leukemia (AML) who are receiving chemotherapy. If you or your child have AML and will have at least two cycles of chemo that include cytarabine, this study may help reduce infection risk.
Madera, CaliforniaAges 1–25
Oncology trials by city in California
Where these studies are running in California
Institutions with a site for the recruiting oncology studies listed above.
- University of California, Irvine Medical Center / UC Irvine Health · 10 studies
- University of California Davis Comprehensive Cancer Center · 9 studies
- Cedars-Sinai Medical Center · 8 studies
- Kaiser Permanente-Oakland · 8 studies
- UC Irvine Health · 8 studies
- Mercy Cancer Center - Elk Grove · 7 studies
- Mercy Cancer Center - Rocklin · 7 studies
- Mercy Cancer Center - Sacramento · 7 studies
What taking part in a oncology 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.
Oncology trials in other states
Common questions
- Are there oncology clinical trials in California?
- Yes. We're currently tracking 134 recruiting oncology 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 oncology 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 oncology 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 oncology 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.