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
- NCT04181060RecruitingPhase 3
Osimertinib alone or with bevacizumab for EGFR-mutant lung cancer
This Phase 3 trial tests whether starting osimertinib with or without bevacizumab helps people with advanced EGFR-mutant lung cancer live longer and control the cancer better. Your EGFR mutation test result and past treatments are key to whether you can join.
Antioch, CaliforniaAges 18 years+ - NCT03191149RecruitingPhase 2
Osimertinib for lung cancer with an EGFR exon 20 change
This Phase 2 study tests osimertinib (a targeted lung cancer pill) in people with advanced non-small cell lung cancer (NSCLC) whose tumors have an EGFR exon 20 insertion. It aims to see how well osimertinib works for this specific EGFR mutation and how safe it is.
Burbank, CaliforniaAges 18 years+ - NCT05285358RecruitingPhase 1
Aerosol chemo plus standard drugs for bile duct and gallbladder cancer
This trial tests a new way to give the drug paclitaxel directly into your belly as a mist, along with two standard chemo drugs given through your veins, for bile duct or gallbladder cancer that has spread to the lining of the belly. The goal is to see if this approach can better control the cancer in the belly.
Duarte, CaliforniaAges 18 years+ - NCT06901531RecruitingPhase 3
Study of zolbetuximab with pembrolizumab and chemo for gastric cancer
This trial tests a new combination of drugs (zolbetuximab, pembrolizumab, and chemotherapy) for people with advanced stomach or gastroesophageal junction cancer. It may be an option if your tumor has certain proteins (CLDN18.2 and PD-L1) and you haven't had chemotherapy for advanced disease.
Bakersfield, CaliforniaAges 18 years+ - NCT03526835RecruitingPhase 1/Phase 2
Study of MCLA-158 for advanced solid tumors
This trial tests a new experimental drug called MCLA-158 (petosemtamab) for people with advanced solid tumors, especially head and neck cancer or colorectal cancer, that have not responded to standard treatments. The study aims to see if this drug can shrink tumors or slow their growth.
La Jolla, CaliforniaAges 18 years+ - NCT04198766RecruitingPhase 1/Phase 2
New OX40 immunotherapy for advanced solid tumors
This trial tests a new immunotherapy drug (INBRX-106) alone or with Keytruda (pembrolizumab) for adults with advanced solid tumors that have not responded to standard treatments. The goal is to see if the drug can help the immune system fight cancer.
Duarte, CaliforniaAges 18 years+ - NCT06369285RecruitingPhase 2
Alisertib and hormone therapy for advanced breast cancer
This trial tests a new drug, alisertib, combined with hormone therapy for people with HR-positive, HER2-negative breast cancer that has spread or come back and is no longer curable. It may be an option if you've already tried at least two hormone therapies and a CDK4/6 inhibitor.
Beverly Hills, CaliforniaAges 18 years+ - NCT07043608RecruitingPhase 2
Zanzalintinib for kidney cancer that spread to bone
This trial tests a new drug called zanzalintinib for people with advanced clear cell kidney cancer that has spread to the bones (at least 3 spots). The study wants to see if this drug can help slow down or shrink the cancer. It's for patients who have already had some prior treatments.
San Francisco, CaliforniaAges 18 years+ - NCT06545942RecruitingPhase 1
Studying MOMA-313 for advanced or metastatic solid tumors
This trial tests a new oral drug, MOMA-313, alone or with another drug (olaparib), in people whose cancer has a specific DNA repair problem (HR-deficient mutation). It aims to see if the drug can shrink tumors or slow their growth.
La Jolla, CaliforniaAges 18 years+ - NCT07719361RecruitingPhase 1
New drug for advanced, treatment-resistant prostate cancer
This study tests an experimental drug for men whose prostate cancer has spread and stopped responding to standard hormone therapies. It may be an option if your PSA is rising despite treatment with drugs like enzalutamide or abiraterone.
Los Angeles, CaliforniaAges 18 years+ - NCT04172532RecruitingPhase 1/Phase 2
New targeted drug with radiation for locally advanced pancreatic cancer
This Phase 1/2 trial tests adding peposertib, a targeted anti-cancer drug, to standard radiation for people with locally advanced pancreatic adenocarcinoma. It aims to improve control of the cancer after initial chemotherapy and determine whether the combo is safe and effective.
Duarte, CaliforniaAges 18 years+ - NCT07318805RecruitingPhase 1
A study of PF-08032562 for advanced solid tumors
This study tests a new medicine, PF-08032562, for people with advanced breast or colorectal cancer that has not responded to prior treatments. It aims to see if the drug is safe and can help shrink or slow the cancer.
Duarte, CaliforniaAges 18 years+ - NCT07581184RecruitingPhase 1
Targeted Radioactive Therapy for Advanced Prostate Cancer
This Phase 1 trial tests a new radioactive treatment called [225Ac]Ac-AKY-2519 in men with advanced prostate cancer that has spread and stopped responding to hormone therapy. The drug carries radioactivity directly to cancer cells to try to shrink tumors and slow disease progression.
Irvine, CaliforniaAges 18 years+ - NCT04434040RecruitingPhase 2
Atezolizumab and sacituzumab to prevent breast cancer return
This trial tests two medicines after surgery and chemotherapy to help lower the risk that triple-negative breast cancer comes back. It’s for people whose cancer still showed “residual” invasive disease after neoadjuvant (before-surgery) chemotherapy, and whose blood test shows traces of tumor DNA.
San Francisco, CaliforniaAges 18 years+ - NCT04503265RecruitingPhase 1/Phase 2
AMXI-5001 study for advanced cancers that won’t respond
This Phase 1/2 trial tests AMXI-5001 in people with advanced cancers that have progressed or stopped responding to standard treatments. It’s mainly designed to find the safest dose and see early signs the treatment might work.
Los Angeles, CaliforniaAges 18 years+ - NCT04729114RecruitingPhase 1
Safety and dose test of PRL-02 shot for advanced prostate cancer
This Phase 1 study tests how safe PRL-02 depot (an injection) is and finds the best dose for men with advanced prostate cancer. It may help determine a new treatment option for cancers that have spread or are getting worse despite standard care.
Anaheim, CaliforniaAges 18 years+ - NCT04734730RecruitingPhase 2
Talazoparib plus hormone therapy for metastatic prostate cancer
This trial tests whether talazoparib added to standard hormone therapy (ADT), along with abiraterone, can better control metastatic prostate cancer that hasn’t progressed despite starting hormone treatment. It may help people live longer and delay cancer worsening.
Duarte, CaliforniaAges 18 years+ - NCT04900818RecruitingPhase 1
Givastomig for advanced solid cancers, including gastric and pancreas
This Phase 1 trial tests how safe and effective givastomig (TJ033721) is for advanced or metastatic solid tumors. It may help people whose cancer has grown despite standard treatment, or—if in the combination parts—specific cancers that meet certain lab test and tumor-marker requirements.
Orange, CaliforniaAges 18 years+ - NCT07322094RecruitingPhase 1/Phase 2
Study of TORL-1-23 plus chemo before surgery for advanced ovarian cancer
This trial tests a new drug, TORL-1-23, given with chemotherapy before surgery for women with advanced ovarian cancer. It aims to see if this combination is safe and effective in shrinking tumors before they are removed.
Fullerton, CaliforniaAges 18–75 - NCT04981509RecruitingPhase 2
Check if 3 medicines help advanced kidney cancer
This Phase 2 trial tests whether combining bevacizumab, erlotinib, and atezolizumab can shrink or control advanced kidney cancer. It’s aimed at people with certain kidney-cancer subtypes (including HLRCC-related cases or papillary kidney cancer) and who have not had many prior targeted or immune treatments.
La Jolla, CaliforniaAges 12 years+ - NCT05123482RecruitingPhase 1/Phase 2
Early study of AZD8205 for advanced solid tumors
This Phase 1/2 study tests how safe and effective AZD8205 is for people with advanced or metastatic solid cancers that have come back or spread after standard treatments. It may help by finding the right dose and whether AZD8205 works alone or with another treatment in different cancer types.
Duarte, CaliforniaAges 18 years+ - NCT05198830RecruitingPhase 2
Adding TRC102 to standard chemoradiation for stage III lung cancer
This Phase 2 trial tests whether adding TRC102 to standard chemotherapy plus radiation can improve outcomes for people with stage III non-squamous, non-small cell lung cancer. It is designed for newly staged patients and aims to help the immune system work better while treating the tumor.
Buena Park, CaliforniaAges 18 years+ - NCT05274048RecruitingPhase 1
Neratinib plus antibody-drug for HER2-positive stomach or esophagus cancer
This early-phase trial tests neratinib together with an antibody-drug to treat advanced HER2-positive gastro-esophageal (stomach/esophagus) cancer that can’t be removed by surgery. It’s for people whose cancer has progressed after at least one HER2-targeted treatment, aiming to shrink tumors and improve outcomes.
Palo Alto, CaliforniaAges 18 years+ - NCT05365581RecruitingPhase 1
Study drug for stomach and pancreatic cancers with lab-checked targets
This Phase 1 trial tests ASP2138 alone or with other cancer medicines in adults with stomach (including GEJ) or pancreatic cancer. You may be eligible if your tumor has a specific protein marker and your health tests and scan results meet safety requirements.
Orange, 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 · 6 studies
- City of Hope Orange County Lennar Foundation Cancer Center · 4 studies
- University of California Davis Comprehensive Cancer Center · 3 studies
- University of California, Los Angeles (UCLA) · 3 studies
- University of California, San Francisco · 3 studies
- Los Angeles Cancer Network · 2 studies
- Providence Medical Foundation · 2 studies
- Providence Saint Joseph Medical Center/Disney Family 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.