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
- NCT05789082RecruitingPhase 1/Phase 2
Divarasib for untreated lung cancer with KRAS G12C
This trial studies divarasib to see if it is safe and can shrink or control advanced lung cancer. Participants must have a KRAS G12C mutation and have not had prior treatment for their advanced disease.
Duarte, CaliforniaAges 18 years+ - NCT05872295RecruitingPhase 1
Study drug for HER2-positive advanced cancers
This Phase 1 trial tests IKS014 to see how safe it is and how well it works in advanced solid tumors that have HER2. You may be eligible if your tumor is HER2-positive (including certain “low HER2” types) and your body’s blood counts and organ function are strong enough.
Newport Beach, CaliforniaAges 18 years+ - NCT05877430RecruitingPhase 1/Phase 2
Testing an anti-cancer drug plus pembrolizumab for advanced cancers
This Phase 1/2 study tests the safety and early signs of benefit from CJRB-101 when combined with pembrolizumab (Keytruda) in people with advanced or metastatic lung, head and neck, or melanoma cancer. It may help some participants, but the main goal is to see how safe the combination is and whether it can control cancer.
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+ - NCT05984589Recruiting
Health coaching for colorectal cancer survivors
This study tests a personalized health coaching program for people who have had colorectal or other gastrointestinal cancer. It helps you work on lifestyle habits like diet, exercise, and alcohol use to improve your health.
Los Angeles, CaliforniaAges 18 years+ - NCT06026410RecruitingPhase 1
KO-2806 for advanced solid tumors
This trial tests a new drug called KO-2806, alone or with other treatments, for people with advanced solid tumors that have specific gene changes (like HRAS or KRAS mutations). It may help if standard treatments have stopped working.
Los Angeles, CaliforniaAges 18 years+ - NCT06031688RecruitingPhase 2
Targeted treatment for lung cancer with a MET gene change
This trial tests a targeted drug for advanced non-small cell lung cancer that has a specific genetic change called MET exon 14 skipping. It aims to see if the drug can shrink tumors or slow the cancer's growth, and may help people who have or haven't had prior treatment.
Berkeley, CaliforniaAges 18 minutes+ - NCT06075810RecruitingPhase 1
Oral MBQ-167 for advanced breast cancer
This trial tests an experimental oral drug, MBQ-167, for people with advanced breast cancer who have tried other treatments or have no standard options left. The goal is to see if the drug can help slow or stop the cancer.
Beverly Hills, CaliforniaAges 21 years+ - NCT06092892RecruitingPhase 2
Upfront targeted lymph node removal for early breast cancer
This trial is for women age 45 and older with early ER-positive breast cancer that has spread to the lymph nodes under the arm. It tests a surgery approach where the main tumor and only a few key lymph nodes (rather than many) are removed.
Los Angeles, CaliforniaAges 45 years+ - NCT06099769RecruitingPhase 2
Testing enzalutamide with or without mifepristone for AR-positive breast cancer
This trial tests if adding the drug mifepristone to the standard antiandrogen enzalutamide works better than enzalutamide alone or chemotherapy for people with a specific type of breast cancer that has androgen receptors. It aims to find a new targeted treatment option for triple-negative or ER-low breast cancer.
San Francisco, CaliforniaAges 18 years+ - NCT06103669Recruiting
Local treatment for limited cancer spread
This trial tests whether using local treatments (like targeted radiation or ablation) on a few new spots of cancer can help people whose cancer is otherwise stable on their current treatment. It enrolls people with various solid tumors, such as breast, gynecologic, head & neck, sarcoma, or other types.
Sacramento, CaliforniaAges 18 years+ - NCT06171139Recruiting
Genetic counseling tool for Black men with prostate cancer
This study tests a new tool to help Black or African American men with prostate cancer understand genetic testing options. The goal is to improve counseling and decision-making about tumor genetic testing.
San Francisco, CaliforniaAges 18 years+ - NCT06173362RecruitingPhase 2
Abiraterone or darolutamide for advanced prostate cancer
This study is comparing two drugs, abiraterone and darolutamide, to see how well they work for advanced prostate cancer. You might join if your cancer has spread and your doctor agrees these treatments could help.
Sacramento, CaliforniaAges 18 years+ - NCT06224673RecruitingPhase 2
Testing ARX788 for HER2-low advanced breast cancer
This trial tests a new drug, ARX788, for people with HER2-low breast cancer that has spread or cannot be removed by surgery. The goal is to see if ARX788 helps shrink or control the cancer.
San Francisco, CaliforniaAges 18 years+ - NCT06244771RecruitingPhase 1/Phase 2
Testing FMC-376 for KRAS G12C mutated solid tumors
This study tests a new targeted pill called FMC-376 for people whose cancer has a specific KRAS G12C mutation. The goal is to see if it can shrink tumors or slow their growth when other treatments have stopped working.
San Francisco, CaliforniaAges 18 years+ - NCT06249282RecruitingPhase 1
Carfilzomib and sotorasib for KRAS G12C lung cancer
This trial tests a combination of two drugs: carfilzomib and sotorasib, for people with a specific type of advanced lung cancer (KRAS G12C mutation) who have already tried a KRAS-targeting drug that stopped working. The goal is to see if this new combination can shrink tumors or slow the cancer.
Irvine, CaliforniaAges 18 years+ - NCT06281678RecruitingPhase 2
Study of IBI363 for advanced solid tumors
This trial tests a new drug called IBI363 for people with advanced solid tumors. It aims to see if the drug is safe and effective. You may be able to join if you are generally well and have not had other cancer treatments recently.
San Francisco, CaliforniaAges 18 years+ - NCT06288113RecruitingPhase 2
Re-treatment with 177Lu-PSMA-617 for prostate cancer
This trial tests if a second round of a targeted radiation therapy (177Lu-PSMA-617) can help men whose prostate cancer has returned after a successful first treatment. It is for men whose cancer has stopped responding to hormone therapy and chemotherapy, and whose PSA levels have risen again after a prior good response to this drug.
Los Angeles, CaliforniaAges Any age - NCT06297265Recruiting
Gentle breast massage after lumpectomy for breast cancer
This trial studies whether a special gentle massage technique (manual lymphatic drainage) can help women who have had breast-conserving surgery and will receive whole breast radiation. The goal is to see if it reduces side effects and improves recovery.
Los Angeles, CaliforniaAges 18 years+ - NCT07020117RecruitingPhase 1
Study of AKY-1189 for advanced solid tumors
This trial tests a new radioactive drug, AKY-1189, for people with solid tumors that have spread or cannot be removed. It may help if other treatments have stopped working.
Duarte, CaliforniaAges 18 years+ - NCT06399419RecruitingPhase 1
Study of CBM588 with immunotherapy for advanced kidney cancer
This trial tests whether adding a probiotic (CBM588) to a standard immunotherapy combination (nivolumab and ipilimumab) helps treat advanced kidney cancer. It is for people with a specific type of kidney cancer that has spread or cannot be removed with surgery, who have not had systemic treatment before.
Duarte, CaliforniaAges 18 years+ - NCT06422455Recruiting
Genetic testing for underserved cancer patients
This study offers free genetic testing to cancer patients and their healthcare providers. It aims to help people who may not have easy access to genetic testing understand their cancer risk.
Los Angeles, CaliforniaAges 18 years+ - NCT06454383RecruitingPhase 1
Gemcitabine and leflunomide for advanced pancreatic cancer
This trial tests if adding leflunomide (a drug used for arthritis) to standard chemotherapy (gemcitabine) can help people with advanced pancreatic cancer that cannot be removed by surgery. The goal is to see if the combination works better than gemcitabine alone.
Duarte, CaliforniaAges 18 years+ - NCT06470243RecruitingPhase 3
Adding carboplatin to cabazitaxel for advanced prostate cancer
This study tests whether adding a chemotherapy drug called carboplatin to another chemotherapy called cabazitaxel works better than cabazitaxel alone for men with advanced prostate cancer that has spread and no longer responds to hormone therapy. All participants must have already had docetaxel chemotherapy.
Long Beach, 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 · 5 studies
- City of Hope Comprehensive Cancer Center · 5 studies
- University of California, San Francisco · 4 studies
- City of Hope Orange County Lennar Foundation Cancer Center · 2 studies
- Hoag Memorial Hospital Presbyterian · 2 studies
- Kaiser Permanente-San Francisco · 2 studies
- Kaiser Permanente-Vallejo · 2 studies
- Torrance Memorial Physician Network · 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.