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
- 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 - NCT06736379RecruitingPhase 1
RNA Therapy Injections for Head and Neck Cancer
This trial tests a new type of immunotherapy made of self-amplifying RNA (saRNA) that produces a protein called IL-12. It's injected directly into head and neck tumors to help your immune system fight the cancer. The study is for people whose cancer has not responded well to standard treatments or who are having surgery to remove their tumor.
Stanford, CaliforniaAges 18 years+ - NCT06774027Recruiting
Breast cancer antibody-drug conjugate treatment registry
This study tracks how well antibody-drug conjugates (ADCs) work for breast cancer that has spread. You may join if you are about to start your first or second ADC for hormone receptor-positive/HER2-negative or triple-negative breast cancer.
San Francisco, 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+ - 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+ - 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.
San Francisco, 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+ - 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+ - NCT07038343RecruitingPhase 1/Phase 2
Testing a new drug for advanced solid tumors
This trial tests a new drug called AVZO-1418, either alone or with other treatments, for people with advanced solid tumors that have spread or cannot be removed. The goal is to see if the drug is safe and effective against certain types of cancer.
Los Angeles, CaliforniaAges 18–75 - NCT07080242RecruitingPhase 1
Study of a new drug for small cell lung cancer and neuroendocrine tumors
This trial tests a new drug called BL-M14D1 for people with certain types of advanced lung cancer or neuroendocrine tumors that have stopped responding to other treatments. It may be an option if your cancer has a specific marker called DLL3.
Los Angeles, 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+ - 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 - NCT06101277Recruiting
Local therapy for limited new cancer growth in digestive cancers
This trial tests a cancer treatment that uses local therapies (like radiation or targeted heat) to destroy a small number of growing spots. It is for people with certain gastrointestinal cancers whose main treatment is working well except for a few new spots, so they can avoid switching to a different drug right away.
Sacramento, CaliforniaAges 18 years+ - 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+ - 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.
Los Angeles, CaliforniaAges 45 years+ - NCT00568490Recruiting
Finding blood markers that show low oxygen in tumors
This study looks for substances in blood that may reflect how “low-oxygen” a tumor is. If you have head and neck cancer or non-small cell lung cancer, it may help researchers understand tumor oxygen levels and improve future care.
Stanford, CaliforniaAges 18 years+ - NCT06178354Recruiting
Freezing or ultrasound for early prostate cancer
This trial is testing whether freezing (cryotherapy) or using high-frequency ultrasound (HIFU) to destroy only the cancer spots in the prostate is safe and effective for men with early-stage prostate cancer. It's a less invasive option that targets just the tumor, not the whole prostate.
Sacramento, CaliforniaAges 18 years+ - NCT07444814RecruitingPhase 1
HWK-007 for advanced solid tumors
This trial tests a new drug called HWK-007, which is designed to target and attack cancer cells while sparing healthy ones. It is for people with specific advanced solid tumors (lung, endometrial, or ovarian cancer) that have not responded well to standard treatments.
Los Angeles, CaliforniaAges 18 years+ - NCT07462377RecruitingPhase 1
Testing EPI-326 for EGFR-mutant lung and head & neck cancers
This trial tests a new drug, EPI-326, in people with advanced lung or head & neck cancers that have certain EGFR changes. The goal is to see if it is safe and may help shrink the cancer.
Los Angeles, CaliforniaAges 18 years+ - NCT07468903Recruiting
Focal radiation for prostate cancer with HDR brachytherapy
This trial tests a targeted radiation treatment called HDR brachytherapy for prostate cancer that hasn't spread. It aims to treat only the cancer spots seen on MRI, which may reduce side effects.
Los Angeles, CaliforniaAges 40 years+ - NCT06844383RecruitingPhase 2
Talazoparib with or without enzalutamide for prostate cancer after prior treatment
This study tests a drug called talazoparib, either alone or combined with enzalutamide, in people with prostate cancer that has spread and has a specific genetic change. The goal is to see if this treatment can help control the cancer after previous therapies have stopped working.
Duarte, CaliforniaAges 18 years+ - NCT07005154RecruitingPhase 2
Study of ASP5541 for metastatic prostate cancer
This study tests an experimental drug called ASP5541 for men with metastatic prostate cancer (either hormone-sensitive or castration-resistant). It aims to see if the drug can slow cancer growth and improve outcomes when added to standard hormone therapy.
San Diego, CaliforniaAges 18 years+ - NCT07109726RecruitingPhase 1/Phase 2
Testing TER-2013 for advanced tumors with AKT/PI3K/PTEN changes
This trial tests a new drug called TER-2013, alone or combined with another drug (fulvestrant), for people with advanced solid tumors that have specific genetic changes in the AKT/PI3K/PTEN pathway. It aims to see if the drug is safe and effective.
Duarte, CaliforniaAges 18 years+ - NCT06058377RecruitingPhase 3
Adding immunotherapy to chemo for stage II-III breast cancer
This trial tests whether adding the immunotherapy drug durvalumab to standard chemotherapy works better than chemo alone for people with hormone receptor positive, HER2 negative breast cancer that is stage II or III and has a high-risk genetic score (MammaPrint High Risk 2).
Auburn, 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
- University of California, San Francisco · 4 studies
- University of California Davis Comprehensive Cancer Center · 3 studies
- Providence Medical Foundation · 2 studies
- Providence Santa Rosa Memorial Hospital · 2 studies
- Stanford University · 2 studies
- The Angeles Clinic and Research Institute · 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.