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
- NCT07276438Recruiting
Image-guided radiation therapy for localized prostate cancer
This trial tests a precise radiation technique that adapts to your body's daily changes. It may offer better outcomes for men with prostate cancer that hasn't spread outside the pelvic area.
Los Angeles, CaliforniaAges 18 years+ - NCT07226115Recruiting
Predicting chemotherapy outcomes for colorectal cancer
This trial uses a special test on your tumor tissue to see if it can predict how well chemotherapy will work for you. If you have had chemotherapy for stage II or III colorectal cancer after surgery, your stored tumor sample may help develop a tool that could guide future treatment decisions.
Duarte, CaliforniaAges 18–80 - NCT07222566RecruitingPhase 3
New drug plus chemotherapy for advanced lung cancer
This trial tests a new study drug called PF-08634404 combined with standard chemotherapy for people with advanced lung cancer that has not been treated before. It aims to see if this combination works better than chemotherapy alone.
Anaheim, CaliforniaAges 18 years+ - NCT07211178Recruiting
Tracking cancer DNA in blood to detect early return of breast cancer
This study tracks tiny traces of cancer DNA in the blood over time to see if it can find early signs of breast cancer coming back. It looks at different types of breast cancer and at different points in a patient's treatment journey.
Whittier, CaliforniaAges 18–99 - NCT07186296Recruiting
Emerald blood test study for new cancer diagnosis
This study is testing a blood test that looks for signs of lung, breast, colorectal, pancreatic, or ovarian cancer. If you have just been told you might have one of these cancers and haven't started treatment yet, this study may be an option to help learn more about your cancer from a simple blood draw.
Long Beach, CaliforniaAges 45 years+ - NCT07191717RecruitingPhase 2
Imlunestrant and abemaciclib for early ER+ breast cancer
This trial tests whether adding two targeted drugs, imlunestrant and abemaciclib, to your usual hormone therapy can lower the chance of your breast cancer coming back. It is for people with early-stage ER+ breast cancer who have no signs of cancer on scans but have tiny amounts of tumor DNA in their blood (called ctDNA).
Los Angeles, CaliforniaAges 18 years+ - NCT07125729Recruiting
Early cancer detection test for colorectal cancer
This trial uses two blood tests (Signatera and Haystack) to look for tiny bits of cancer DNA after surgery, to find out if the cancer comes back as early as possible. People with stage II, III, or IV colorectal cancer who have had or will have surgery to remove their tumor may join.
Lancaster, CaliforniaAges 18 years+ - NCT07103018RecruitingPhase 1
Study of KTX-2001 for men with advanced prostate cancer
This trial tests a new drug called KTX-2001, possibly combined with another drug (darolutamide), for men whose prostate cancer has spread and stopped responding to standard hormone treatments. The goal is to see if it can help shrink tumors or slow the cancer's growth.
San Francisco, CaliforniaAges 18 years+ - NCT07090499RecruitingPhase 1
Study of PF-08046876 for advanced solid tumors
This trial tests a new medicine, PF-08046876, for people with advanced cancers of the bladder, lung, head and neck, esophagus, or pancreas. It aims to see if the drug is safe and works against these cancers.
Duarte, CaliforniaAges 18 years+ - NCT07085767RecruitingPhase 3
Palazestrant and ribociclib for first-line advanced breast cancer
This trial tests a new drug (palazestrant) combined with ribociclib for people with a common type of advanced breast cancer that is estrogen receptor-positive and HER2-negative. You may qualify if you haven't had treatment for advanced disease and your cancer has either just been found or came back long after completing hormone therapy.
Beverly Hills, CaliforniaAges 18 years+ - NCT07080242RecruitingPhase 1
Study of BL-M14D1 for small cell lung cancer and neuroendocrine tumors
This trial tests an investigational drug, BL-M14D1, for people with certain types of neuroendocrine tumors or small cell lung cancer that have progressed after standard treatment. The drug targets a protein called DLL3 found on these cancer cells, which may help shrink tumors or slow their growth.
Long Beach, CaliforniaAges 18 years+ - NCT07024784RecruitingPhase 2
Study of IMGN151 for gynecologic cancers
This study tests a new drug (IMGN151) given intravenously, alone or with other therapies, for people with certain gynecologic cancers, specifically high-grade serous ovarian, fallopian tube, or primary peritoneal cancer. The goal is to see how well it works and what side effects might occur.
Los Angeles, CaliforniaAges 18 years+ - NCT07033026RecruitingPhase 2
Study of NGM120 for weight loss in colorectal cancer
This study tests an experimental drug called NGM120 for people with colorectal cancer who are losing weight (a condition called cancer cachexia). It is a placebo-controlled trial, meaning some participants will receive the drug and some will receive a placebo, to see if the drug helps stop or reverse this weight loss.
Los Angeles, CaliforniaAges 18 years+ - NCT07018869RecruitingPhase 3
A website to improve follow-up care for colorectal cancer survivors
This study tests if an educational website, viewed with a supporter, can improve follow-up care for people who had surgery for stage II or III colorectal cancer. It aims to help patients and their supporters find helpful information together.
Merced, CaliforniaAges 18 years+ - NCT06982521RecruitingPhase 3
Comparing two drug combinations for advanced breast cancer
This trial tests two different combinations of medicines for people with a certain type of advanced breast cancer (HR-positive, HER2-negative) that has a specific gene change called PIK3CA. The goal is to see which combination is better at slowing down the cancer.
Beverly Hills, CaliforniaAges 18 years+ - NCT06974110RecruitingPhase 1
Study of a new drug for advanced solid tumors with MSI-H or dMMR
This trial tests an oral medication called MOMA-341 in people with advanced solid tumors that have high microsatellite instability (MSI-H) or mismatch repair deficiency (dMMR). It aims to see if the drug can help when prior immunotherapy hasn't worked or isn't available.
San Diego, CaliforniaAges 18 years+ - NCT06917079RecruitingPhase 1
BBO-11818 for KRAS-mutated cancers
This trial tests a new oral drug (BBO-11818) for people with solid tumors that have a specific KRAS mutation. It's for those whose cancer has spread or cannot be removed by surgery and who have not had other cancers recently.
Sacramento, CaliforniaAges 18 years+ - NCT06778863RecruitingPhase 1
A study of CLSP-1025 for adults with certain solid tumors
This trial tests a new drug called CLSP-1025 for people with advanced solid tumors that have a specific change in the p53 gene (R175H). The drug targets this change to help fight the cancer.
Los Angeles, CaliforniaAges 18 years+ - NCT06774963RecruitingPhase 1
Study of LNCB74 for advanced solid tumors
This trial tests a new drug called LNCB74 for people with advanced solid tumors that have not responded to other treatments. It aims to see if the drug is safe and effective.
Newport Beach, CaliforniaAges 18 years+ - NCT06736379RecruitingPhase 1
Injected immune therapy for head and neck cancer
This trial tests an experimental treatment that is injected directly into the tumor to stimulate your immune system to fight the cancer. It is for people with head and neck cancer who have not been helped by prior treatments or who are scheduled for surgery.
Stanford, CaliforniaAges 18 years+ - NCT06710756RecruitingPhase 1/Phase 2
Lead-212 therapy for solid tumors
This trial tests a new radioactive drug, Lead-212 PSV359, for people with advanced solid tumors that have not responded to standard treatments. The drug is designed to find and attack cancer cells.
Los Angeles, CaliforniaAges 18–90 - NCT06298916RecruitingPhase 1/Phase 2
Study of 64Cu-LNTH-1363S in Sarcoma or GI Cancer
This trial tests a new imaging agent, 64Cu-LNTH-1363S, to see if it can find certain sarcomas and gastrointestinal cancers. The goal is to help doctors better see where your cancer is and plan the best treatment. You may be eligible if you have a sarcoma or a GI cancer and are willing to have a tumor tissue sample taken.
Orange, CaliforniaAges 15 years+ - NCT06589804RecruitingPhase 3
Testing cetuximab plus pembrolizumab for advanced head and neck cancer
This trial tests whether adding cetuximab to the standard drug pembrolizumab works better for head and neck cancer that has spread or come back after treatment. It is for people whose cancer did not respond to platinum chemotherapy and whose tumors have a certain immune marker (PD-L1).
Marysville, CaliforniaAges 18 years+ - NCT06562192RecruitingPhase 1
Testing a radioactive drug for advanced pancreatic, lung, breast, and colorectal cancers
This trial tests a new radioactive drug (177Lu-NNS309) for people with advanced pancreatic, lung, breast, or colorectal cancer that has not responded to prior treatments. It aims to see if the drug can target and shrink tumors.
Palo Alto, CaliforniaAges 18–100
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 · 5 studies
- UCLA Jonsson Comprehensive Cancer Center · 4 studies
- City of Hope at Irvine Lennar · 2 studies
- MemorialCare Long Beach Medical Center · 2 studies
- University of California, Davis · 2 studies
- University of California, Los Angeles (UCLA) · 2 studies
- University of California, San Francisco · 2 studies
- Beverly Hills Cancer 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 1,320 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.