Clinical trials · California
Cancer clinical trials in California
We’re tracking 1,320 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
- NCT05406167Recruiting
Tracking quality of life during radiotherapy with a new system
This study collects information about how you feel and how treatment is delivered while you receive radiotherapy using the RefleXion Medical radiotherapy system. It may help doctors improve care and better understand what affects quality of life during treatment.
Duarte, CaliforniaAges Any age - NCT04553770RecruitingPhase 2
Trastuzumab deruxtecan with or without anastrozole for early breast cancer
This Phase 2 study tests whether trastuzumab deruxtecan alone or combined with anastrozole can control early-stage breast cancer that is HER2-low and hormone-receptor positive. It aims to improve outcomes after initial surgical treatment by targeting cancer cells that may have low levels of HER2.
Fullerton, CaliforniaAges 18 years+ - NCT06047379RecruitingPhase 1/Phase 2
Testing NEO212 for brain tumors and metastases
This trial tests a new drug called NEO212 for people with certain brain tumors (like astrocytoma or glioblastoma) or cancer that has spread to the brain from other parts of the body. The goal is to see if it is safe and if it can help shrink or control the tumors.
Beverly Hills, CaliforniaAges 18 years+ - NCT05489211RecruitingPhase 2
Testing a cancer drug for advanced solid tumors
This Phase 2 study tests the drug Dato-DXd (alone or with other cancer medicines) in people with advanced solid tumors. It looks for tumor shrinkage and how safely the treatment can be given.
Santa Rosa, CaliforniaAges 18–130 - NCT04981119Recruiting
Test apheresis for CAR T manufacturing in HLA-A2 solid tumors
This trial studies how a process called apheresis is used to make CAR T cells for people with certain solid tumors. It is designed for tumors that have lost a specific immune marker (HLA-A*02), which may affect how well CAR T therapies work.
Santa Monica, CaliforniaAges 18 years+ - NCT04775355Recruiting
Track urine and gut changes during prostate cancer treatment
This study looks at how your urine and gut (intestine) microbes change while you undergo prostate cancer treatments, including hormone therapy (androgen deprivation) and/or radiation. The goal is to better understand these biological changes, which may help improve future treatment planning.
Duarte, CaliforniaAges 18 years+ - NCT07441681RecruitingPhase 3
Comparing radiation plus targeted therapy vs standard chemo for head and neck cancer
This trial compares two treatments for advanced head and neck cancer in patients who cannot take the drug cisplatin. One group gets radiation plus a targeted drug called cetuximab, the other gets radiation plus standard chemotherapy. The goal is to see which approach works better and is safer for people who are not candidates for cisplatin.
Los Angeles, CaliforniaAges 18 years+ - NCT07321106RecruitingPhase 1
CBI-1214 for advanced colorectal cancer
This trial tests a new drug called CBI-1214, which is designed to help your immune system attack cancer cells. It is for people with advanced colorectal cancer that has not responded to other treatments.
Duarte, CaliforniaAges 18 years+ - NCT04510129Recruiting
Cancer biospecimen collection study for immunotherapy patients
This study collects samples (like tissue biopsies and imaging information) from people with certain cancers who are starting anti–PD-1/PD-L1 immunotherapy. It helps researchers gather material to study how these treatments work.
San Francisco, CaliforniaAges 18 years+ - NCT07061977RecruitingPhase 3
New cancer drug combo for advanced cervical cancer
This trial tests if giving the immunotherapy drug pembrolizumab before and after standard chemoradiation works better than the standard approach for people with high-risk cervical cancer that has spread locally.
Bellflower, CaliforniaAges 18 years+ - NCT03175224RecruitingPhase 2
Test drug APL-101 for lung or other tumors with MET changes
This Phase 2 study tests APL-101 to shrink advanced cancers that have certain MET-related changes, including specific MET mutations, MET gene amplification, or MET fusions. It may help people whose tumors have run out of standard treatment options.
Los Angeles, CaliforniaAges 18 years+ - NCT05107674RecruitingPhase 1
Early drug study for advanced cancers that have limited options
This Phase 1 study tests NX-1607 in adults with advanced cancers that are hard to treat with standard care. It focuses on safety and early signs of how well the drug may work in specific cancer types.
Duarte, CaliforniaAges 18 years+ - NCT06440005RecruitingPhase 1
Testing AGX101 for advanced solid tumors
This study tests a new drug called AGX101 for people with advanced solid tumors that have not responded to other treatments. The goal is to see if it is safe and if it can shrink tumors or slow their growth.
Los Angeles, CaliforniaAges 18 years+ - NCT05919264RecruitingPhase 1/Phase 2
FOG-001 for advanced solid tumors with certain gene changes
This trial tests a new drug, FOG-001, alone or with other treatments, for people with advanced solid tumors that have specific changes in the WNT pathway genes. It aims to see if the drug can shrink tumors or slow their growth.
Los Angeles, CaliforniaAges 18 years+ - NCT05659381RecruitingPhase 3
Heated belly chemo plus niraparib after interval surgery for ovarian cancer
This Phase 3 study tests whether heated chemotherapy placed inside the belly, followed by interval surgery and the maintenance medicine niraparib, can improve outcomes for certain advanced ovarian, fallopian tube, or primary peritoneal cancers. It focuses on people whose tumors are HRD/LOH positive and who can have all visible disease removed.
Palo Alto, CaliforniaAges 18 years+ - NCT05281471RecruitingPhase 3
Tested drug for platinum-resistant ovarian cancer with bevacizumab
This Phase 3 trial tests a treatment made of an investigational gene-based drug plus standard “platinum” chemotherapy and bevacizumab, compared with standard chemotherapy and bevacizumab. It’s for ovarian/fallopian tube/primary peritoneal cancers that have not responded to platinum chemotherapy or came back quickly.
La Jolla, CaliforniaAges 18 years+ - NCT05005403RecruitingPhase 1
Testing azirkitug for lung, head/neck, and other solid cancers
This Phase 1 study tests how a new medicine (azirkitug) behaves in the body and how safe it is, given by IV infusion alone or with other cancer drugs. It may help people with several advanced solid tumor cancers, especially after standard treatments have stopped working.
Duarte, CaliforniaAges 18 years+ - NCT04657068RecruitingPhase 1/Phase 2
Study of ART0380 for advanced solid tumors
This study tests a new drug called ART0380 for people with advanced solid tumors that have not responded to standard treatments. It may be especially helpful for those with certain DNA repair gene changes (like ATM or BRCA). The drug will be given alone or with chemotherapy (gemcitabine or irinotecan) depending on the part of the trial.
Santa Barbara, CaliforniaAges 18 years+ - NCT03866382RecruitingPhase 2
Immunotherapy plus a targeted drug for rare genitourinary tumors
This Phase 2 study tests whether nivolumab and ipilimumab (immunotherapy drugs) plus cabozantinib (a targeted anti-cancer drug) can shrink or control rare cancers of the urinary/reproductive system that have spread. It may help by boosting the immune system and blocking cancer growth signals at the same time.
Arroyo Grande, CaliforniaAges 18 years+ - NCT01042379RecruitingPhase 2
Adaptive drug trial for newly diagnosed breast cancer
This study tests personalized, changing treatment plans (given before surgery) to find better options for your specific breast tumor. You may be asked for extra breast-tissue testing to help match you with the most suitable study drug(s).
Newport Beach, CaliforniaAges 18 years+ - NCT07391774RecruitingPhase 3
Hormone therapy with or without chemo for early breast cancer
This trial tests whether skipping chemotherapy and using only hormone therapy with a drug called ribociclib works as well as chemotherapy followed by hormone therapy with ribociclib for certain early breast cancers that have a low risk of coming back.
Auburn, CaliforniaAges 18 years+ - NCT07625644RecruitingPhase 3
New immunotherapy combination for advanced lung cancer
This trial tests a new drug called BL-M14D1 combined with atezolizumab (an immunotherapy) against standard chemotherapy for extensive-stage small cell lung cancer, a serious type of lung cancer that has spread. The goal is to see if this combination helps patients live longer and control their cancer better.
Glendale, CaliforniaAges 18 years+ - NCT07524322RecruitingPhase 1
RGT-490 for Advanced Cancers With PIK3CA Mutations
This study tests a new drug called RGT-490 in patients with advanced solid tumors (cancers that have spread or cannot be removed by surgery) that have a specific genetic change called a PIK3CA mutation. The drug is designed to block a protein involved in cancer cell growth.
Los Angeles, CaliforniaAges 18 years+ - NCT07250477RecruitingPhase 2
Guided immunotherapy for advanced lung cancer
This trial tests whether using a blood test to guide treatment can improve outcomes for people with advanced non-small cell lung cancer who are starting immunotherapy for the first time. Participants will receive standard immunotherapy tailored to their individual risk profile.
Chico, 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.
- City of Hope · 8 studies
- USC Norris Comprehensive Cancer Center · 4 studies
- UC San Diego Moores Cancer Center · 3 studies
- UCLA Jonsson Comprehensive Cancer Center · 3 studies
- University of Southern California · 3 studies
- Cedars-Sinai Medical Center · 2 studies
- Hoag Memorial Hospital Presbyterian · 2 studies
- Stanford Cancer Institute · 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 1,320 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.