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 3 and Phase 4 studies, each written for real people, not researchers.
Recruiting studies in California
- NCT07208084Recruiting
A support program for Black women with breast cancer
This study tests a program called Project SOAR that offers group support and education for Black American women with breast cancer. It aims to help them feel more empowered and connected during their journey.
Los Angeles, CaliforniaAges 18 years+ - NCT07218913RecruitingPhase 1
Testing a drug to reduce ear damage from chemo in testicular cancer
This trial tests whether adding Pedmark (sodium thiosulfate) to cisplatin chemotherapy can protect hearing in men with stage II or III testicular germ cell tumors. It aims to reduce the risk of drug-related ear damage while still treating the cancer.
Duarte, CaliforniaAges 18 years+ - NCT07219147RecruitingPhase 1
Combination treatment for advanced prostate cancer
This trial tests a combination of two treatments for advanced prostate cancer that has stopped responding to hormone therapy. One treatment is a targeted radiation therapy (177Lu-PSMA-617) and the other is an immunotherapy (sipuleucel-T) that helps your immune system fight the cancer.
Duarte, CaliforniaAges 18 years+ - NCT07220343Recruiting
Using phones and watches to check on teens and young adults with cancer
This study uses your smartphone and a smartwatch to track your daily activity and mood, helping researchers learn how to better support teens and young adults with cancer. It may help improve mental health care for people your age dealing with cancer.
Palo Alto, CaliforniaAges 10–25 - NCT07223307RecruitingPhase 2
MRI-guided radiation for liver cancers
This trial tests a precise MRI-guided radiation treatment for liver cancers, including liver cancer, bile duct cancer, or cancer that has spread to the liver. The goal is to target tumors more accurately while protecting healthy tissue.
Palo Alto, CaliforniaAges 18 years+ - NCT07227233RecruitingPhase 2
AI-guided retrial of CDK4/6 inhibitors for advanced breast cancer
This trial tests whether an artificial intelligence (AI) tool can help doctors decide if it is safe and effective to give you a second course of a CDK4/6 inhibitor drug (like palbociclib, ribociclib, or abemaciclib) plus hormone therapy for advanced (unresectable or metastatic) HR+/HER2- breast cancer. The goal is to only treat people whose cancer is likely to respond based on a special AI analysis of their tumor tissue.
La Jolla, CaliforniaAges 18 years+ - NCT07232602RecruitingPhase 1/Phase 2
New drug combinations for advanced bladder cancer
This study tests adding new treatments to a standard therapy (enfortumab vedotin and pembrolizumab) for people with advanced bladder cancer that hasn't been treated before. It aims to find out if these combinations are safe and work better.
San Francisco, CaliforniaAges 18 years+ - NCT07169734RecruitingPhase 1/Phase 2
ALE.P03 for advanced CLDN1-positive solid tumors
This trial tests a new drug, ALE.P03, for people with advanced or metastatic solid tumors that have a certain protein (CLDN1). The drug is given alone (monotherapy) to see if it can shrink tumors or slow their growth.
Los Angeles, CaliforniaAges 18 years+ - NCT06819007RecruitingPhase 3
Study of trastuzumab deruxtecan plus bevacizumab for HER2-positive ovarian cancer
This trial tests whether adding trastuzumab deruxtecan to standard maintenance therapy with bevacizumab works better than bevacizumab alone for people with advanced ovarian cancer that has the HER2 protein. It is for those who have finished initial chemotherapy plus bevacizumab and are now starting maintenance treatment.
Burbank, CaliforniaAges 18 years+ - NCT07091617Recruiting
Better genetic testing for young adults with cancer
This study tests a new way to offer genetic testing to young adults (ages 18-39) who have or had cancer. The goal is to make it easier for you to learn if you have inherited gene changes that could affect your cancer and your family's health.
Arroyo Grande, CaliforniaAges 18 years+ - NCT07558733RecruitingPhase 1/Phase 2
New drug combinations for advanced hormone-receptor positive breast cancer
This trial tests two new drugs (sapanisertib and serabelisib) alone or together to treat advanced breast cancer that is hormone-receptor positive. These drugs target specific pathways that help cancer grow, and the trial will see if they work better than standard treatments.
Los Angeles, CaliforniaAges 18 years+ - NCT07488676RecruitingPhase 1/Phase 2
Study of ASP546C for stomach, pancreas, and other cancers
This trial tests a new drug called ASP546C in people with certain advanced cancers that have a specific marker (CLDN18.2). It aims to see if the drug can shrink or slow tumor growth.
Los Angeles, CaliforniaAges 18 years+ - NCT07285694RecruitingPhase 1/Phase 2
Study of AB-3028 for advanced prostate cancer
This trial tests a new type of immune cell therapy (called AB-3028) designed to recognize and attack prostate cancer cells that have the PSMA protein on their surface. It's for people whose prostate cancer has spread and is no longer controlled by hormone therapy.
Los Angeles, CaliforniaAges 18 years+ - NCT07293585RecruitingPhase 3
Precision radiation to protect erectile function in prostate cancer
This trial tests a new radiation technique to better protect erectile function during prostate cancer treatment. It uses advanced imaging to precisely target the tumor while reducing harm to nearby structures.
Los Angeles, CaliforniaAges 18 years+ - NCT07303725Recruiting
Spectral CT scan during cancer tumor treatment
This study tests a special CT scan used during procedures to treat tumors, like blocking blood flow or burning the tumor. It may help doctors see tumors more clearly during the treatment.
Palo Alto, CaliforniaAges 18 years+ - NCT07323641RecruitingPhase 2
Telisotuzumab Vedotin and Osimertinib for Advanced Lung Cancer
This trial tests a combination of two drugs—telisotuzumab vedotin and osimertinib—for people with a specific type of advanced non-small cell lung cancer that has stopped responding to osimertinib alone. The goal is to see if adding the second drug can help control the cancer.
Los Angeles, CaliforniaAges 18 years+ - NCT07336446RecruitingPhase 1/Phase 2
Testing AZD9750 for metastatic prostate cancer with or without other drugs
This trial is for men with metastatic prostate cancer that has gotten worse despite treatment. It tests a new drug called AZD9750, given alone or with other cancer drugs, to see if it is safe and works well.
Duarte, CaliforniaAges 18 years+ - NCT05376878RecruitingPhase 4
PET/MRI scan to guide treatment in HER2+ brain metastatic breast cancer
This trial tests a special PET/MRI imaging scan using a labeled drug to help doctors evaluate HER2+ breast cancer that has spread to the brain. It focuses on patients who plan to receive fam-trastuzumab deruxtecan, a targeted cancer medicine, and aims to see how well the scan can support treatment decisions.
Duarte, CaliforniaAges 18 years+ - NCT05128825RecruitingPhase 2
Test drug azenosertib for platinum-resistant ovarian cancer
This Phase 2 trial tests azenosertib to treat platinum-resistant high-grade serous ovarian, fallopian tube, or primary peritoneal cancer. It looks for whether the drug can shrink tumors and improve outcomes in people whose cancer has returned after platinum chemotherapy.
La Jolla, CaliforniaAges 18 years+ - NCT04804644RecruitingPhase 3
Memory-sparing radiation for brain metastases in small cell lung cancer
This study tests whether focusing high-dose radiation only on brain tumor spots, while avoiding the hippocampus (a brain area important for memory), helps protect memory and thinking compared with standard whole-brain radiation. It’s for people with small cell lung cancer that has spread to the brain.
Anaheim, CaliforniaAges 18 years+ - NCT07431281RecruitingPhase 3
New drug combo for advanced stomach cancer with CLDN18.2
This trial tests a new drug combination for people with advanced stomach cancer that has not been treated before. It looks at two groups: one with PD-L1 (a protein that helps decide if immunotherapy works), and one without. The treatment includes an antibody-drug conjugate (Sonesitatug Vedotin) plus standard chemotherapy, with or without an immunotherapy drug.
Walnut Creek, CaliforniaAges 18 years+ - NCT07611110RecruitingPhase 3
AZD2265 vs standard care for advanced prostate cancer
This trial tests a new cancer-fighting drug called AZD2265 against standard treatment for men with advanced prostate cancer that has spread and stopped responding to hormone therapy. You may qualify if your cancer previously responded to PSMA-targeted radiation treatments but is now growing again.
Duarte, CaliforniaAges 18 years+ - NCT00230308Recruiting
Study of new genes in head and neck cancer surgery tissue
This study looks at tissue from people having surgery for head and neck cancer at Stanford University. Researchers want to identify new proteins and genes that may help explain the cancer and guide future treatments.
Stanford, CaliforniaAges 18 years+ - NCT00843375Recruiting
Testing stool samples to find early colon cancer and polyps
This study checks stool samples to see how well stool tests can detect early colon cancer and precancerous growths called adenomas. If you qualify, you’ll collect stool samples for a lab test (FIT) and sometimes this helps sort who should get follow-up testing.
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.
- City of Hope Comprehensive Cancer Center · 4 studies
- Research Site · 3 studies
- Stanford University · 3 studies
- USC / Norris Comprehensive Cancer Center · 3 studies
- Providence Saint Joseph Medical Center/Disney Family Cancer Center · 2 studies
- START Los Angeles · 2 studies
- University of California, Los Angeles (UCLA) · 2 studies
- Cedars-Sinai Medical 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.