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, Phase 2/Phase 3, Phase 3 and Phase 4 studies, each written for real people, not researchers.
Recruiting studies in California
- NCT06568016Recruiting
Helping patients get colonoscopy after abnormal stool test
This study tests a new clinic program to help patients complete a colonoscopy if they received an abnormal result from a fecal immunochemical test (FIT), a simple stool test for colon cancer. It focuses on community health centers and aims to make follow-up care easier.
Los Angeles, CaliforniaAges Any age - NCT06570642Recruiting
Study on emotions and physical activity
This study looks at how emotions affect your desire to be active. You'll wear a Fitbit smartwatch and answer short surveys to help researchers understand what helps people start and stick with physical activity.
Los Angeles, CaliforniaAges 18 years+ - NCT05137054RecruitingPhase 1
Linvoseltamab combo for hard-to-treat multiple myeloma
This trial tests a new drug called linvoseltamab combined with other cancer treatments for people with multiple myeloma that has stopped responding to standard therapies. It may be an option if you have already tried several treatments and are looking for a new approach.
La Jolla, CaliforniaAges 18 years+ - NCT06606028Recruiting
Blood test for leftover cancer DNA after head and neck cancer treatment
This study uses a simple blood test to look for leftover cancer DNA after treatment for head and neck squamous cell carcinoma. The goal is to see if the test can find very small amounts of cancer early, which might help doctors make better decisions about follow-up care.
San Francisco, CaliforniaAges 18 years+ - NCT06624644RecruitingPhase 2/Phase 3
LNS8801 with or without pembrolizumab for advanced melanoma
This trial tests a new drug called LNS8801, alone or with pembrolizumab, for people with advanced melanoma that has stopped responding to prior treatments, especially anti-PD-1 therapy.
Newport Beach, CaliforniaAges 18 years+ - NCT06630845Recruiting
Comparing two whole-body scan methods for metastatic cancer
This trial tests whether a newer type of MRI scan (called whole-body DWI) can work as well as a standard PET/CT scan (called FDG PET) for finding and monitoring cancer that has spread. If you have metastatic cancer and already have a scheduled PET/CT or other scan, you may be able to get both scans done, helping researchers compare the two methods.
San Francisco, CaliforniaAges 18 years+ - NCT06639724RecruitingPhase 1
Test of fostamatinib with chemo before and after surgery for pancreatic cancer
This trial tests adding a new drug, fostamatinib, to standard chemotherapy before and after surgery for pancreatic cancer that can be removed. The goal is to see if the combination helps reduce the chance of cancer coming back.
La Jolla, CaliforniaAges 18 years+ - NCT06646627RecruitingPhase 1
B7-H3 car t cells for platinum-resistant ovarian cancer
This trial tests a new treatment where your own immune cells are modified to attack ovarian cancer cells that have stopped responding to platinum chemotherapy. It's for people with recurrent ovarian cancer that hasn't gotten better with standard treatments.
Palo Alto, CaliforniaAges 18 years+ - NCT06648278Recruiting
Support and technology study for breast cancer patients
This trial tests a program called PONTS 2.0 that uses phone texts and online tools to support breast cancer patients through their treatment. It aims to make it easier for patients to get the help they need.
San Francisco, CaliforniaAges 18 years+ - NCT06650163RecruitingPhase 1
New imaging test for brain tumor surgery planning
This trial tests a new kind of PET scan that uses a special tracer (Zr-89 crefmirlimab berdoxam) to help doctors see brain tumors more clearly before surgery. If you are scheduled to have your brain tumor removed, this scan may give your surgeon extra information to guide the operation.
Los Angeles, CaliforniaAges 18 years+ - NCT06655246RecruitingPhase 1
Ziftomenib and imatinib for advanced GIST
This trial tests a new drug, ziftomenib, combined with imatinib for people with advanced or spreading gastrointestinal stromal tumors (GIST) that have a KIT mutation. It may help if your GIST has gotten worse while on imatinib.
Orange, CaliforniaAges 18 years+ - NCT06671613Recruiting
Fasting-mimicking diet with immunotherapy for advanced lung cancer
This study combines a special periodic diet that mimics fasting with the standard immunotherapy drug pembrolizumab (Keytruda) for people with advanced non-small cell lung cancer. The goal is to see if the diet can help the immunotherapy work better.
Long Beach, CaliforniaAges 18 years+ - NCT06682728RecruitingPhase 2
Treating high-risk bladder cancer after surgery
This trial tests a combination of two drugs (sacituzumab govitecan and nivolumab) given after surgery to prevent the return of muscle-invasive bladder cancer. It is for patients whose cancer has a high chance of coming back despite surgery.
Orange, CaliforniaAges 18 years+ - NCT04184973Recruiting
Testing a colon bypass device during colorectal cancer surgery
This trial studies a device (CG-100) placed inside the bowel to see if it can improve safety and outcomes during surgery for colorectal cancer. You would be asked to follow extra study check-ins after your operation, and the team would monitor whether the device works as intended.
San Diego, CaliforniaAges 22–70 - NCT06385080RecruitingPhase 1/Phase 2
Study of amivantamab for head and neck cancer
This trial tests a drug called amivantamab, either alone or with other treatments, for people with head and neck cancer that has spread or come back. The goal is to see if the drug can help shrink tumors or control the cancer.
La Jolla, CaliforniaAges 18 years+ - NCT06667908RecruitingPhase 2
Study of a drug with chemoradiation for stage 3 lung cancer
This trial tests a new drug, JNJ-90301900, given together with standard chemotherapy and radiation, followed by maintenance immunotherapy (durvalumab) for people with stage 3 non-small cell lung cancer that cannot be surgically removed. The goal is to see if adding this drug improves outcomes.
La Jolla, CaliforniaAges 18 years+ - NCT04389632RecruitingPhase 1
Sigvotatug vedotin for advanced solid tumors that spread
This early-stage study tests a drug called sigvotatug vedotin in people with advanced solid cancers that cannot be removed or have spread. It aims to see how well the treatment works and what side effects it causes.
Los Alamitos, CaliforniaAges 18 years+ - NCT06183437RecruitingPhase 4
Can I stop heart meds after cancer therapy?
This trial tests whether it is safe to stop taking heart failure medications in people who developed heart weakness after cancer treatment but whose heart function has since recovered. It aims to see if stopping these drugs leads to any worsening of heart health.
Los Angeles, CaliforniaAges 18 years+ - NCT04564781Recruiting
Predicting how bladder cancer responds to BCG
This study tries to predict whether BCG treatment will work for people with certain early-stage bladder cancers. It may help doctors better choose and monitor BCG for similar patients in the future.
Los Angeles, CaliforniaAges 18–90 - NCT06119581RecruitingPhase 3
Oloromosib with Immunotherapy as First Treatment for KRAS G12C Lung Cancer
This trial tests a new targeted pill (olomorasib) combined with immunotherapy (pembrolizumab) and possibly chemotherapy for people with advanced non-small cell lung cancer that has a KRAS G12C mutation and has not been treated before.
Los Angeles, CaliforniaAges 18 years+ - NCT06796907RecruitingPhase 1/Phase 2
Mocertatug rezetecan with other drugs for advanced solid tumors
This trial tests a new drug, mocertatug rezetecan, combined with other anti-cancer therapies for people with advanced solid tumors like endometrial or ovarian cancer. It aims to see if the combination is safe and effective.
La Jolla, CaliforniaAges 18 years+ - NCT07224841Recruiting
Blood test to predict targeted therapy response in colorectal cancer
This study is developing a blood test that looks at DNA signals to see if certain targeted therapies will work for people with metastatic colorectal cancer. It may help doctors choose the right treatment in the future.
Duarte, CaliforniaAges 18 years+ - NCT06750094RecruitingPhase 3
Study of amivantamab plus FOLFIRI in colorectal cancer
This trial tests adding amivantamab to standard FOLFIRI chemotherapy for people with certain types of colorectal cancer that have already been treated once. It aims to see if this combination works better than another common treatment (cetuximab or bevacizumab plus FOLFIRI).
Bakersfield, CaliforniaAges 18 years+ - NCT07243015Recruiting
Detecting cancer spread risk with blood markers
This trial uses simple blood tests to find tiny bits of cancer that might remain after surgery for stomach cancer. It could help doctors predict if the cancer will come back or spread.
Duarte, 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 Diego Health · 4 studies
- University of California, Los Angeles (UCLA) · 4 studies
- University of California, San Francisco · 3 studies
- Cancer and Blood Specialty Clinic · 2 studies
- Cedars-Sinai Medical Center · 2 studies
- City of Hope Comprehensive Cancer Center · 2 studies
- Providence Medical Foundation · 2 studies
- UCLA / Jonsson Comprehensive Cancer Center · 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.