Clinical trials · California
Cancer clinical trials in California
We’re tracking 1,311 recruiting cancer studies with a site in California — including Early Phase 1, Phase 1, Phase 1/Phase 2, Phase 2, Phase 2/Phase 3, Phase 3 and Phase 4 studies, each written for real people, not researchers.
Recruiting studies in California
- NCT07357597RecruitingPhase 4
Preventing mouth sores during breast or lung cancer treatment
This trial tests whether a steroid mouthwash can prevent mouth sores caused by the drug Datopotamab Deruxtecan (Dato-DXd). It is for people with certain types of advanced breast cancer or lung cancer who are about to start Dato-DXd for the first time.
Duarte, CaliforniaAges 18 years+ - NCT07023289RecruitingPhase 2
Study of Telisotuzumab Adizutecan for ctDNA-Positive Colorectal Cancer
This trial tests a new drug, Telisotuzumab Adizutecan, given through a vein (infusion) alone or with standard treatments for people with colorectal cancer who have no visible tumors on scans but still have cancer DNA (ctDNA) in their blood after surgery and chemotherapy.
Fullerton, CaliforniaAges 18 years+ - NCT06336902RecruitingPhase 1
Immunotherapy plus fasting diet and vitamin C for KRAS-mutated colorectal cancer
This trial tests a combination of two immunotherapy drugs (botensilimab and balstilimab) plus a fasting-mimicking diet and high-dose vitamin C for people with a specific type of advanced colorectal cancer (KRAS-mutated). It aims to see if this approach can help when standard treatments have stopped working.
Fullerton, CaliforniaAges 18 years+ - NCT06338475Recruiting
Support program for Latino young adults with cancer
This trial tests a support program designed to help Latino and Hispanic young adults cope with the challenges of cancer. It focuses on reducing distress and helping you move toward your goals.
Irvine, CaliforniaAges 18–39 - NCT06345729RecruitingPhase 3
Study of Calderasib and Pembrolizumab for Advanced Lung Cancer
This trial tests a new combination of two drugs (Calderasib and Pembrolizumab) in people with a specific type of advanced lung cancer (non-small cell lung cancer) that has a KRAS G12C mutation and high PD-L1 levels. It aims to see if this treatment can help shrink or control the cancer.
Beverly Hills, CaliforniaAges 18 years+ - NCT06350097RecruitingPhase 3
Osimertinib with or without another drug for advanced EGFR-mutant lung cancer
This trial tests whether adding a new drug (datopotamab deruxtecan) to the standard targeted therapy osimertinib works better for advanced non-small cell lung cancer with certain EGFR mutations. It is for people who have not had chemotherapy or targeted therapy before.
Fountain Valley, 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+ - NCT06401421Recruiting
Blood test for tumor DNA after breast cancer chemo
This study tests a new blood test to see if it can find tiny bits of tumor DNA after chemotherapy. If you have a larger or higher-risk breast cancer and are getting chemotherapy before surgery, you may join. The test could help doctors know if your cancer is gone or if more treatment is needed.
Torrance, CaliforniaAges 18 years+ - NCT06417814RecruitingPhase 3
Study of Dato-DXd with or without osimertinib for EGFR-mutated lung cancer
This trial tests a new drug, Dato-DXd, given alone or with osimertinib, versus standard chemotherapy for people with a specific type of advanced lung cancer (EGFR-mutated non-small cell lung cancer) that has worsened after osimertinib treatment.
La Jolla, CaliforniaAges 18–130 - NCT06427954Recruiting
Mobile app study for people with advanced lung cancer
This study tests a mobile app (called THRIVE) to help people with advanced lung cancer manage their health and well-being. You'll use the app on your phone to track symptoms and get support, which may help you feel better and stay more in control.
Los Angeles, CaliforniaAges 18 years+ - NCT06437574RecruitingPhase 2
Cholesterol-lowering and immune response in prostate cancer
This trial tests whether taking a daily cholesterol-lowering medication (Vytorin or ezetimibe) can boost your immune system to help fight prostate cancer. It is for men with low- or intermediate-risk prostate cancer who are on active surveillance and planning a biopsy.
Los Angeles, CaliforniaAges 18 years+ - NCT06439836RecruitingPhase 1
Combination immunotherapy for advanced bladder cancer
This trial tests a new drug, CA-4948, combined with pembrolizumab (Keytruda) for people with advanced bladder cancer that grew after prior immunotherapy. The goal is to see if this combination can help when standard treatments stop working.
Duarte, CaliforniaAges 18 years+ - NCT06445062RecruitingPhase 1/Phase 2
Study of new RAS inhibitors for GI solid tumors
This trial tests new drugs that target specific RAS mutations in advanced gastrointestinal cancers, like pancreatic or colorectal cancer. It aims to see if these drugs can shrink tumors or slow their growth.
La Jolla, CaliforniaAges 18 years+ - NCT06445114RecruitingPhase 2
Blood-Guided Chemoradiation for HPV-Positive Throat Cancer
This study tests whether a blood test that looks for circulating HPV DNA (ctDNA) can help doctors decide if you need chemotherapy after surgery for HPV-positive throat cancer. After you have surgery to remove the cancer, you receive radiation (possibly with chemotherapy) — the results of the blood test guide whether or not to add chemo.
Beverly Hills, CaliforniaAges 18 years+ - NCT06457503RecruitingPhase 4
Toripalimab plus chemo for advanced nasopharyngeal cancer
This trial tests whether adding the immunotherapy drug toripalimab to standard chemotherapy (cisplatin and gemcitabine) can help people whose nasopharyngeal cancer has come back or spread. It is for those who haven't yet received other treatments for this advanced stage.
Irvine, CaliforniaAges 12 years+ - NCT06463028RecruitingPhase 2
Targeted pills plus chemo for advanced endometrial cancer
This trial tests a combination of two targeted pills (sapanisertib and serabelisib) with standard chemo (paclitaxel) for endometrial cancer that has come back or spread. A substudy also looks at combining these drugs with a special diet that lowers insulin levels.
San Francisco, CaliforniaAges 18 years+ - NCT06481592RecruitingPhase 2
Study of lifileucel for advanced endometrial cancer
This trial tests an experimental cell therapy called lifileucel, made from your own immune cells, for advanced endometrial cancer that has progressed after standard treatments. It aims to shrink tumors and slow the disease.
Los Angeles, CaliforniaAges 18–70 - NCT03972657RecruitingPhase 1/Phase 2
Testing a new prostate and kidney cancer drug with immunotherapy
This early trial tests whether REGN5678 (nezastomig) is safe and how well it works, either by itself or with an immunotherapy drug (cemiplimab). It targets adults with metastatic castration-resistant prostate cancer and certain metastatic kidney cancers that have already been treated.
Santa Monica, CaliforniaAges 18 years+ - NCT07155187RecruitingPhase 2/Phase 3
Study of telisotuzumab adizutecan for EGFR-mutated lung cancer
This trial tests a new drug, telisotuzumab adizutecan (given through a vein), alone or with another targeted therapy, versus standard treatments for people with a specific type of advanced lung cancer that has an EGFR mutation and has gotten worse after previous treatment.
Duarte, CaliforniaAges 18 years+ - NCT04613596RecruitingPhase 2/Phase 3
Adagrasib for KRAS G12C lung cancer, alone or with pembrolizumab
This trial studies adagrasib (an anti-cancer drug) either alone or with pembrolizumab (an immunotherapy) in people with advanced lung cancer that has a KRAS G12C mutation. It aims to shrink tumors and improve outcomes, including for people without urgent brain treatment needs.
Anaheim, CaliforniaAges 18 years+ - NCT06486454Recruiting
Liver tumor treatment with sound waves
This trial tests a new device that uses sound waves to destroy liver tumors without cutting or needles. It may be an option if you have a liver tumor that can be partly or fully targeted by this technique.
Mission Viejo, CaliforniaAges 22 years+ - NCT06500481RecruitingPhase 3
Proton vs standard radiation for cancer spread to brain/spine lining
This trial compares a newer type of radiation (proton therapy) to standard radiation for people whose breast or lung cancer has spread to the lining of the brain and spinal cord. It aims to see if proton therapy can better control the disease while causing fewer side effects.
Encinitas, CaliforniaAges 18 years+ - NCT06511037RecruitingEarly Phase 1
Dye injection to help see cancer during belly surgery
This study tests a special dye, called pafolacianine, that is injected before surgery to help surgeons see hidden cancer spots in the belly during the operation. The goal is to see if using this dye improves how completely the cancer is removed in people with gastrointestinal cancer that has spread to the belly lining.
Orange, CaliforniaAges 18 years+ - NCT06526299RecruitingPhase 2
Higher dose of targeted radiation for prostate cancer with low PSMA levels
This trial tests a higher dose of a radioactive drug (177Lu-PSMA-617) for men whose prostate cancer has spread and does not produce much of a protein called PSMA on scans. The goal is to see if a stronger dose can work better than the standard dose.
Sylmar, 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.
- University of California, San Francisco · 5 studies
- UC San Diego Moores Cancer Center · 4 studies
- Cedars-Sinai Medical Center · 3 studies
- Providence Medical Foundation · 3 studies
- Research Site · 3 studies
- City of Hope Comprehensive Cancer Center · 2 studies
- Providence Saint John's Health Center · 2 studies
- University of California, Irvine · 2 studies
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.