Clinical trials · California
Cancer clinical trials in California
We’re tracking 1,313 recruiting cancer studies with a site in California — including Phase 1, Phase 1/Phase 2, Phase 2, Phase 2/Phase 3, Phase 3 and Phase 4 studies, each written for real people, not researchers.
Recruiting studies in California
- NCT05699213Recruiting
MRI and blood tests for lung nodules found on screening
This study looks at whether MRI scans and blood-related biomarkers can help better understand lung nodules found during routine lung cancer screening. It may help doctors decide which nodules need closer follow-up versus less intensive monitoring.
Los Angeles, CaliforniaAges 50 years+ - NCT05708352RecruitingPhase 2
Ketogenic diet vs usual diet guidance for newly diagnosed glioblastoma
This trial tests whether a very low-carb, high-fat ketogenic diet helps people with newly diagnosed glioblastoma when combined with standard cancer treatment. You would compare this special diet guidance to the usual anti-cancer diet guidance while receiving the same standard-of-care treatments.
Los Angeles, CaliforniaAges 18 years+ - NCT05710848RecruitingPhase 1/Phase 2
Study drug for repeat bladder tumor surgery patients
This trial tests STM-416, given around the time you have surgery to remove recurring bladder tumors, to see if it can reduce the chance the cancer comes back. It is for people with high-risk early bladder cancer (non–muscle-invasive) who have already had standard treatment and now need another TURBT.
Bakersfield, CaliforniaAges 18 years+ - NCT05711615RecruitingPhase 1
Low-dose doxorubicin plus peposertib for advanced sarcoma
This Phase 1 trial tests a low dose of a common chemotherapy (liposomal doxorubicin) together with an anti-cancer drug called peposertib. It’s for people with advanced sarcoma that can’t be cured, aiming to find a safe dosing plan and see how well the treatment might work.
Los Angeles, CaliforniaAges 18 years+ - NCT05766748RecruitingPhase 1/Phase 2
Azeliragon trial for pancreatic cancer after prior treatments failed
This trial tests azeliragon in people whose pancreatic cancer has spread or grown locally and who did not respond well to earlier chemotherapy. It aims to see whether the drug can help control the cancer and be tolerated after prior treatment.
Los Angeles, CaliforniaAges 18–80 - NCT05797831RecruitingPhase 2/Phase 3
Maintenance treatment for TP53-wildtype endometrial cancer
This trial tests navtemadlin as a maintenance (ongoing) treatment to help prevent endometrial cancer from coming back after chemotherapy works. It is mainly for people whose cancer has certain genetic features (TP53 “wildtype”) and who had a strong response to first-line taxane–platinum chemo.
Vallejo, CaliforniaAges 18 years+ - NCT05803941RecruitingPhase 4
Study long-term safety of a prostate cancer drug
This trial checks the long-term safety (how it affects you over time) of lutetium-177 vipivotide tetraxetan in people with prostate cancer. You may be eligible if you already received the related drug in a prior Novartis prostate cancer study and can complete the required follow-up tests.
Santa Monica, CaliforniaAges 18–100 - NCT05804318Recruiting
Adaptive daily radiation for low- and intermediate-risk prostate cancer
This trial tests a radiation plan that is adjusted every day using your own scans to better target prostate cancer. It may help reduce side effects while still treating the cancer effectively in men with lower- or intermediate-risk disease.
Duarte, CaliforniaAges 18 years+ - NCT05833360Recruiting
Blood test study to match cancer patients to treatment
This study collects a small amount of your blood to analyze cancer signals and sort patients by cancer “size and stage.” The goal is to see whether this blood-based information can help guide cancer care more accurately.
Palo Alto, CaliforniaAges 18 years+ - NCT05836688Recruiting
Biobehavioral program to help young testicular cancer survivors
This study tests a counseling-style (biobehavioral) program to help reduce upsetting outcomes in young adult testicular cancer survivors. It focuses on people who feel high distress after treatment and aims to improve well-being and coping.
Irvine, CaliforniaAges 18–39 - NCT05874921Recruiting
Registry for adults with UTUC treated with Jelmyto
This registry collects information about adults with upper tract urothelial cancer (UTUC) who received Jelmyto after it was approved. It helps doctors understand outcomes and real-world experience with Jelmyto.
Santa Monica, CaliforniaAges 18 years+ - NCT05882253Recruiting
Test MRI-guided biopsy for early prostate cancer detection
This study uses a special MRI-guided (MRI-fusion) needle biopsy to look for early prostate cancer. It may help find concerning areas more accurately before cancer spreads.
La Jolla, CaliforniaAges Any age - NCT05894239RecruitingPhase 3
Tested targeted drug for HER2-positive breast cancer with PIK3CA changes
This Phase 3 study tests inavolisib plus Phesgo versus placebo plus Phesgo in people whose breast cancer has both HER2-positive and PIK3CA-mutated tumor markers. The goal is to see if adding inavolisib improves how well the treatment controls the cancer and how safe it is.
Burbank, 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+ - NCT05902507Recruiting
MRI guidance during breast cancer radiation treatment
This trial studies using MRI images to help plan and guide radiation therapy after breast-conserving surgery. It may help doctors target the right area more accurately while keeping treatment standard and safe.
San Francisco, 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+ - 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+ - 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 Francisco, 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 - 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+ - 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+ - NCT06002828Recruiting
Social and genetic factors in young adult cancer survivors
This study looks at how social and genetic factors affect the health and quality of life of young adults who have survived Hodgkin or non-Hodgkin lymphoma. It may help doctors better support survivors after treatment.
Emeryville, 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+ - 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+
Cancer trials by city in California
Where these studies are running in California
Institutions with a site for the recruiting cancer studies listed above.
- USC / Norris Comprehensive Cancer Center · 5 studies
- Cedars-Sinai Medical Center · 3 studies
- Los Angeles General Medical Center · 3 studies
- Stanford University · 3 studies
- University of California, San Francisco · 3 studies
- City of Hope Comprehensive Cancer Center · 2 studies
- City of Hope Orange County Lennar Foundation Cancer Center · 2 studies
- Kaiser Permanente-Vallejo · 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 1,313 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.