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, Phase 2/Phase 3 and Phase 3 studies, each written for real people, not researchers.
Recruiting studies in California
- NCT06067841RecruitingPhase 1
New drug for advanced prostate cancer
This study tests a new drug (BMS-986460) for people with advanced prostate cancer that has stopped responding to hormone therapy. It aims to see if the drug can shrink or slow the cancer.
Palo Alto, CaliforniaAges 18 years+ - NCT06056830RecruitingPhase 3
PET scan for high-risk prostate cancer before surgery
This trial uses a special PET scan to find prostate cancer cells before surgery. It may help doctors see where the cancer is located and if it has spread.
Los Angeles, CaliforniaAges 18 years+ - NCT06079671RecruitingPhase 3
Volrustomig for high-risk locally advanced cervical cancer
This trial tests a new medicine called volrustomig for women with locally advanced cervical cancer that has not spread. It is given along with standard chemoradiation and aims to improve outcomes.
West Hollywood, CaliforniaAges 15 years+ - NCT06072781RecruitingPhase 3
Study of Avutometinib + Defactinib for recurrent low-grade ovarian cancer
This trial tests a combination of two oral targeted drugs for people with recurrent low-grade serous ovarian cancer. It aims to see if this therapy works better than standard hormone therapy or chemotherapy options.
Los Angeles, CaliforniaAges 18 years+ - NCT05978128Recruiting
Use advocates to boost lung cancer screening
This trial tests whether trained advocates and supporters can help people who are eligible for lung cancer screening actually get screened. It may help you (and others) by making screening easier to plan and complete.
Los Angeles, CaliforniaAges 40–80 - NCT05558904RecruitingPhase 1/Phase 2
PET/CT scan to help find early lung cancer
This trial tests a special PET/CT scan to spot early lung cancer by finding specific body processes linked to cancer. It compares scan results in people with lung nodules that are either cancer (lung adenocarcinoma) or likely benign.
Los Angeles, CaliforniaAges 18 years+ - NCT06080061Recruiting
Personalized accelerated chemoradiation for lung cancer
This trial tests a personalized, faster course of radiation combined with chemotherapy for lung cancer. It aims to improve treatment effectiveness while reducing side effects by tailoring the radiation plan to each patient.
Palo Alto, CaliforniaAges 18 years+ - NCT06043817RecruitingPhase 1/Phase 2
Study of STX-721 for advanced lung cancer with EGFR or HER2 changes
This trial tests a new drug, STX-721, for people with advanced non-small cell lung cancer that has a specific genetic change (EGFR or HER2 exon 20 insertion). The study aims to see if the drug is safe and effective.
Irvine, CaliforniaAges 18 years+ - NCT06040541RecruitingPhase 1
Study of RMC-9805 for KRAS G12D solid tumors
This trial tests an experimental pill (RMC-9805) for people with solid tumors that have a specific KRAS G12D mutation. It's for those who have already tried other treatments and need new options.
Sacramento, CaliforniaAges 18 years+ - NCT06038578RecruitingPhase 2
TRK-950 with standard chemo for advanced stomach cancer
This trial tests a new drug, TRK-950, added to standard chemotherapy (ramucirumab and paclitaxel) for people with advanced stomach or gastroesophageal junction cancer that has worsened after previous treatment. The goal is to see if this combination can help shrink tumors or slow disease progression.
Duarte, CaliforniaAges 18 years+ - NCT06029270RecruitingPhase 2
Adding relatlimab to standard immunotherapy for nasopharyngeal cancer
This trial tests whether adding a new drug called relatlimab to the usual immunotherapy (nivolumab) helps people with nasopharyngeal cancer that has returned or spread. You will get standard chemotherapy plus nivolumab first, then if it works, you may be randomly assigned to get nivolumab alone or with relatlimab.
Dublin, CaliforniaAges 18 years+ - NCT06022822RecruitingPhase 2
Urolithin A supplement before prostate cancer surgery
This trial tests whether taking a supplement called urolithin A for a few weeks before prostate removal surgery can help. The supplement comes from pomegranates and may slow cancer growth. You may qualify if you have prostate cancer, are planning surgery within 3-6 weeks, and have not had prior treatment like hormone therapy.
Los Angeles, CaliforniaAges 18 years+ - NCT06015880RecruitingPhase 1
Combination drug therapy for relapsed or resistant large B-cell lymphoma
This trial tests a combination of three drugs (mosunetuzumab, polatuzumab vedotin, and lenalidomide) for people with diffuse large B-cell lymphoma (a type of blood cancer) that has come back or not responded to previous treatment. The goal is to see if this combination is safe and effective.
Duarte, CaliforniaAges 18 years+ - NCT05987241RecruitingPhase 2/Phase 3
Using a blood test to guide immunotherapy after bladder/kidney cancer surgery
This study tests whether a blood test that detects tumor DNA can help guide the use of immunotherapy (nivolumab with or without relatlimab) after surgery for urothelial cancer. The goal is to see if starting immunotherapy based on the blood test results can prevent the cancer from coming back.
Anaheim, CaliforniaAges 18 years+ - NCT05997615RecruitingPhase 1
Study of VIR-5500 for advanced prostate cancer
This trial tests VIR-5500 (AMX-500), a new targeted treatment, in men with prostate cancer that has spread and stopped responding to standard therapies. The goal is to see if it is safe and if it may help shrink or slow the cancer.
Duarte, CaliforniaAges 18 years+ - NCT05989828RecruitingPhase 1
Engineered immune cells for advanced triple-negative breast cancer
This trial tests a personalized treatment where your own immune cells are modified to recognize and attack cancer cells that have a specific marker called NY-ESO-1. It is for people with triple-negative breast cancer that has not responded to at least two prior treatments.
Los Angeles, CaliforniaAges 18 years+ - NCT05987644RecruitingPhase 1/Phase 2
Timing of brain radiation for ALK-positive lung cancer with brain mets
This trial tests whether it is better to delay brain radiation or give it right away in people with ALK-positive lung cancer that has spread to the brain and is causing few or no symptoms. If you are starting alectinib, you may be able to join and help find the best timing for radiation.
Stanford, CaliforniaAges 18 years+ - NCT05964504Recruiting
Registry study for metastatic lobular breast cancer
This study collects health information from adults with invasive lobular breast cancer that has spread (metastatic) to help researchers understand factors linked to survival. Joining may help build better knowledge for future treatments and care planning.
San Diego, CaliforniaAges 18 years+ - NCT05948657Recruiting
PSMA PET-CT scan for men on prostate cancer surveillance
This study checks whether a special prostate scan called PSMA PET-CT (along with standard monitoring scans) can help guide care while you are on “active surveillance” instead of immediate treatment. It may help doctors track low-risk prostate cancer changes more accurately over time.
Los Angeles, CaliforniaAges 18 years+ - NCT05951179RecruitingPhase 2
Bladder instillation study for high-grade non–muscle-invasive cancer
This Phase 2 trial tests TARA-002 given directly into the bladder to treat high-grade non–muscle-invasive bladder cancer with active disease. It may help patients who have not previously responded to, or have not received, BCG treatment in the recent past.
Bakersfield, CaliforniaAges 18 years+ - NCT05948865RecruitingPhase 1
Early trial drug for advanced solid tumors
This Phase 1 study tests CPO301 in adults with advanced or metastatic solid tumors that have worsened or cannot be treated with standard options. It aims to find the safest dose and understand how the treatment affects tumors, especially in certain lung cancer groups.
Santa Monica, CaliforniaAges 18 years+ - NCT05920356RecruitingPhase 3
Tested KRAS-targeted sotorasib plus chemo vs pembrolizumab plus chemo
This Phase 3 trial tests whether sotorasib plus standard chemotherapy works better than pembrolizumab (an immunotherapy) plus standard chemotherapy as first treatment for certain advanced lung cancers. It may help people whose tumors have a KRAS G12C mutation and that do not show PD-L1 on testing.
Santa Barbara, CaliforniaAges 18–100 - NCT05913999Enrolling by invitation
PET and heart scans during early chemotherapy
This trial studies how a specialized heart imaging test (PET/MPI) changes during the start of chemotherapy for cancer patients. It may help researchers understand whether this monitoring approach detects heart strain early and keeps patients safer during treatment.
Los Angeles, CaliforniaAges 18 years+ - NCT05896839RecruitingPhase 1/Phase 2
Immunotherapy with prednisone and sirolimus for transplant skin cancer
This early-phase study tests whether adding immunotherapy (nivolumab and ipilimumab) to prednisone and sirolimus can control advanced skin cancers in people with kidney transplants. It aims to see how well the treatment works and how safe it is for transplant recipients.
La Jolla, 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.
- Stanford University · 5 studies
- USC Norris Comprehensive Cancer Center · 5 studies
- City of Hope · 3 studies
- Keck Medicine of USC · 3 studies
- Los Angeles General Medical Center · 3 studies
- UCLA Jonsson Comprehensive Cancer Center · 3 studies
- University of California, Davis · 3 studies
- University of California, Irvine · 3 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.