Clinical trials · California
Cancer clinical trials in California
We’re tracking 1,311 recruiting cancer studies with a site in California — including Phase 1, Phase 1/Phase 2, Phase 2 and Phase 3 studies, each written for real people, not researchers.
Recruiting studies in California
- NCT06136624RecruitingPhase 3
Comparing a new drug to standard hormone therapy for advanced prostate cancer
This trial tests a new pill, opevesostat, against other hormone treatments for men with metastatic castration-resistant prostate cancer that has progressed after previous therapies. It aims to see which approach works better.
Orange, CaliforniaAges 18 years+ - NCT06022965Recruiting
Telemedicine support for older adults with cancer
This study uses telemedicine (video or phone visits) to help older adults with cancer, especially those in underserved communities, get better care. If you're 65 or older and starting a new cancer treatment, you may be able to join from home in English, Spanish, or Chinese.
Lancaster, CaliforniaAges 65 years+ - NCT05733689RecruitingPhase 1
Testing new pre-surgery treatment for stomach and esophagus cancer
This Phase 1 trial tests how well a tailored (response-adapted) chemotherapy plan works before surgery for stomach or gastroesophageal junction cancer. It aims to improve treatment planning while checking early safety.
Orange, CaliforniaAges 18 years+ - 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+ - NCT05642611RecruitingPhase 3
Cooling and compression for nerve protection during chemotherapy
This study tests whether using cooling and/or compression on the arms or legs can prevent nerve damage that can happen from certain chemotherapy drugs. If you get eligible chemo soon, this may help lower the chance of painful numbness or tingling during treatment.
Martinez, CaliforniaAges 18 years+ - NCT05471856RecruitingPhase 1
Test different doses of cancer drugs with ezabenlimab
This Phase 1 trial tests how different doses of a study drug (BI 1703880) work and how safe they are when given with ezabenlimab for advanced solid tumors. It’s for people whose cancer can’t be removed with surgery and who have tried standard treatments or can’t get them.
Los Angeles, CaliforniaAges 18 years+ - NCT04665739RecruitingPhase 2
Lutetium Lu-177 for lung carcinoid tumors with somatostatin receptors
This trial tests lutetium Lu 177 dotatate, a targeted radiation treatment, for advanced lung neuroendocrine (carcinoid) tumors that have a specific marker called somatostatin receptors. It may help shrink tumors by delivering radiation directly to cancer cells that “light up” on a special scan.
Beverly Hills, CaliforniaAges 18 years+ - NCT05394831RecruitingPhase 1/Phase 2
Study of an EGFR-targeted drug for advanced lung cancer
This trial tests a new drug (JIN-A02) in people with advanced or metastatic non-small cell lung cancer (NSCLC) whose cancer has specific EGFR mutations. It mainly checks whether the treatment is safe and tolerable, and how the body handles the drug, with possible benefit depending on your mutation type.
Orange, CaliforniaAges 18 years+ - NCT04609046RecruitingPhase 1
Lenalidomide and nivolumab added to standard treatment for brain lymphoma
This Phase 1 trial tests adding two cancer medicines—lenalidomide and nivolumab—to the usual treatment for primary CNS diffuse large B-cell lymphoma (a type of lymphoma in the brain/spinal fluid). The goal is to see if the combination is safe and if it works better than the usual approach.
Los Angeles, CaliforniaAges 18 years+ - NCT03384238RecruitingPhase 1/Phase 2
Panitumumab dye during pancreatic surgery
This trial tests whether a targeted antibody with a fluorescent dye can help surgeons see and remove pancreatic cancer during planned surgery. It’s an early-phase study, so the main goal is to see if the approach is safe and useful around the time of the operation.
Palo Alto, CaliforniaAges 19 years+ - NCT05521698RecruitingPhase 1
Bicalutamide study for early bladder cancer in men
This trial tests whether bicalutamide can help men with non-muscle invasive bladder cancer (an early form that hasn’t spread into muscle). It is a Phase 1 study, meaning the main goal is to see how safe it is and learn how it behaves in the body for this cancer type.
Los Angeles, CaliforniaAges 18 years+ - NCT04166409RecruitingPhase 3
Selumetinib versus chemo for low-grade brain tumor in children
This trial studies whether the targeted drug selumetinib works better than standard chemotherapy (carboplatin and vincristine) for children and young adults with a specific type of low-grade glioma (grade 1 or 2). It may help shrink tumors and slow growth while comparing side effects between the two treatment approaches.
Loma Linda, CaliforniaAges 2–21 - NCT07671534RecruitingPhase 2
Metronomic chemotherapy with gemcitabine, mitomycin C, and thalidomide for advanced solid tumors
This trial tests a combination of three drugs—gemcitabine, mitomycin C, and thalidomide—given in a low, frequent 'metronomic' schedule to treat advanced solid tumors that have already been treated. The goal is to see if this approach can slow or stop tumor growth with fewer side effects.
Santa Monica, CaliforniaAges 18 years+ - NCT03257033RecruitingPhase 3
Gemcitabine through an artery versus by vein after radiation
This study tests whether giving gemcitabine directly into the artery feeding the pancreas (instead of through an IV) works better after you finish radiation therapy. It may help patients by improving how the medicine reaches the tumor while comparing side effects and outcomes between the two delivery methods.
Loma Linda, CaliforniaAges 18 years+ - NCT01954992RecruitingPhase 3
Glufosfamide vs 5-FU for metastatic pancreatic cancer after gemcitabine
This study compares two chemotherapy drugs—glufosfamide and 5-FU—in people with pancreatic cancer that has spread and got worse after gemcitabine. It aims to see which option works better as a “second-line” treatment.
Whittier, CaliforniaAges 18 years+ - NCT07061769Enrolling by invitation
Using a gentle head device to help with nerve pain from chemo
This trial tests a low-intensity cranial PEMF device to see if it can reduce nerve pain caused by chemotherapy. Participants use the device at home and receive text messages to track their symptoms.
Newport Beach, CaliforniaAges 18–60 - NCT07535112RecruitingPhase 1
Testing BAY 3771249 for Advanced Colorectal Cancer With KRAS Mutation
This early-stage study tests a new drug called BAY 3771249 in people with advanced colorectal cancer that has a specific genetic change (KRAS G12D mutation). Researchers want to learn if it's safe and whether it helps shrink tumors.
San Diego, CaliforniaAges 18 years+ - NCT06492122RecruitingPhase 1
Study of a radioactive drug for advanced prostate cancer
This trial tests a new radioactive treatment, [225Ac]Ac-FL-020, for men with metastatic castration-resistant prostate cancer (mCRPC) that has gotten worse despite other treatments. It's for those who have had at least one prior hormone therapy or chemotherapy.
Irvine, CaliforniaAges 18 years+ - NCT07184294Recruiting
Massage therapy for anxiety during chemo
This study tests different types of massage therapy to see if they can help reduce anxiety while you are getting chemotherapy. It is for people who have already had at least one chemo session, feel anxious, and have at least six more infusions scheduled.
Irvine, CaliforniaAges 18 years+ - NCT05688215RecruitingPhase 1/Phase 2
Zimberelimab and quemliclustat with chemotherapy for pancreatic cancer
This trial studies how well zimberelimab and quemliclustat work together with standard chemotherapy for people with borderline resectable or locally advanced pancreatic cancer. It may help shrink the tumor and make treatment more effective before or around the time surgery is considered for some patients.
Los Angeles, CaliforniaAges 18 years+ - NCT05886036RecruitingPhase 2
Comparing rituximab vs mosunetuzumab for NLPHL
This trial compares two immunotherapy drugs, rituximab and mosunetuzumab, to see which works better for people with nodular lymphocyte-predominant Hodgkin lymphoma (NLPHL) who need treatment. It's for both newly diagnosed and previously treated patients.
Duarte, CaliforniaAges 18 years+ - NCT07217301RecruitingPhase 3
Comparing TAK-928 to docetaxel for advanced lung cancer
This study tests a new drug called TAK-928 against the standard chemo docetaxel for people with advanced squamous non-small cell lung cancer. You may be able to join if you have already tried a checkpoint inhibitor and platinum chemotherapy, and your cancer has grown.
Fair Oaks, CaliforniaAges 18 years+ - NCT07150715RecruitingPhase 2
Radioactive drug plus precise radiation for recurrent prostate cancer
This trial tests a powerful radioactive drug (either alpha or beta) combined with precise radiation to treat prostate cancer that has come back in a few spots outside the prostate. It may help men whose cancer is still hormone-sensitive and has not spread widely.
Los Angeles, CaliforniaAges 18 years+ - NCT06682390Recruiting
Race and diet study for men on hormone therapy
This study explores how race affects nutrition for men receiving hormone therapy (ADT) for prostate cancer. It may help researchers understand if different dietary approaches are needed based on race.
Los Angeles, CaliforniaAges 18 years+
Cancer trials by city in California
Where these studies are running in California
Institutions with a site for the recruiting cancer studies listed above.
- Cedars-Sinai Medical Center · 4 studies
- City of Hope Comprehensive Cancer Center · 4 studies
- University of California, San Francisco · 4 studies
- Loma Linda University Medical Center · 2 studies
- University of California, Los Angeles (UCLA) · 2 studies
- Apex Research Group
- Cancer and Blood Specialty Clinic
- Chao Family Comprehensive Cancer Center
What taking part in a 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.
Cancer trials in other states
Common questions
- Are there cancer clinical trials in California?
- Yes. We're currently tracking 1,311 recruiting 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 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 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 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.