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, Phase 2/Phase 3 and Phase 3 studies, each written for real people, not researchers.
Recruiting studies in California
- NCT07505797Recruiting
Ultrasound imaging study for suspicious breast lesions
This study is testing a new ultrasound device (ATUSA) to see how well it can image breast lesions that have been classified as suspicious (BI-RADS 4 or 5). If you have a recent finding that needs further evaluation, this research might help improve detection methods.
Sacramento, CaliforniaAges 18–94 - NCT07581080Recruiting
Biofield therapy to ease fatigue from cancer immunotherapy
This study tests whether Reiki—a hands-on healing practice—can help reduce severe tiredness in cancer patients receiving immunotherapy drugs. If it works, it could offer patients another way to manage fatigue alongside their cancer treatment.
Irvine, CaliforniaAges 18 years+ - NCT06191185Enrolling by invitation
Improving colonoscopy follow-up after abnormal FIT
This trial tests a program to help people who had an abnormal FIT stool test follow through with getting a colonoscopy. The goal is to improve cancer screening by providing extra support through a care team and technology.
San Francisco, CaliforniaAges 18 years+ - NCT03503240Enrolling by invitation
Skin cancer surgery study about satisfaction, scars, and quality of life
This study asks people who had skin cancer surgery about how they feel about their appearance, their scar healing, and their quality of life. It may help doctors understand what outcomes matter most to patients after skin cancer treatment.
Sacramento, CaliforniaAges 21 years+ - NCT07129993RecruitingPhase 2/Phase 3
Study of datopotamab deruxtecan with chemo for advanced bladder cancer
This trial is testing a new drug combination for advanced bladder cancer that has grown despite previous treatment. It pairs a targeted therapy (datopotamab deruxtecan) with chemotherapy, and the goal is to see if it can slow down or stop the cancer better than standard chemo alone.
Fullerton, CaliforniaAges 18 years+ - NCT06634589RecruitingPhase 1/Phase 2
Combination therapy for relapsed B-cell blood cancers
This study tests new drug combinations for people with B-cell blood cancers (like lymphoma or leukemia) that have come back or stopped responding to treatment. It aims to see if these combos are safe and can help fight the cancer.
Los Angeles, CaliforniaAges 18 years+ - NCT07365241RecruitingPhase 3
Study of ABBV-706 vs standard care for advanced small cell lung cancer
This trial tests a new drug called ABBV-706 against standard treatments (topotecan, lurbinectedin, or amrubicin) for people with small cell lung cancer that has come back or stopped responding to previous therapies. The goal is to see if ABBV-706 works better at controlling the cancer.
Duarte, CaliforniaAges 18 years+ - NCT07174336RecruitingPhase 3
Testing Tersolisib with other treatments for advanced breast cancer
This trial tests a new study drug called Tersolisib combined with other anti-cancer treatments for people with advanced breast cancer that has a specific gene change (PIK3CA). The goal is to see if the combination can help shrink or slow the cancer.
Clovis, CaliforniaAges 18 years+ - NCT06077760RecruitingPhase 3
Personalized cancer vaccine plus Keytruda for lung cancer after surgery
This study tests a new personalized cancer vaccine (V940) plus Keytruda versus a placebo plus Keytruda for people with non-small cell lung cancer that was removed by surgery. The goal is to see if the vaccine helps prevent the cancer from coming back.
Los Angeles, CaliforniaAges 18 years+ - NCT07221253RecruitingPhase 3
Study of Rilvegostomig or Durvalumab plus chemo for biliary tract cancer
This trial tests two immunotherapy drugs (rilvegostomig or durvalumab) combined with standard chemotherapy for people with bile duct or gallbladder cancer that has spread or cannot be removed. It aims to see if these combinations work better than chemo alone.
Duarte, CaliforniaAges 18 years+ - NCT06764940RecruitingPhase 2
Utidelone and capecitabine for HER2-negative breast cancer with brain metastases
This trial tests if the combination of Utidelone and capecitabine can shrink brain metastases in people with HER2-negative breast cancer. It is designed for those whose cancer has spread to the brain and who have not had many prior treatments.
Duarte, CaliforniaAges 18 years+ - NCT07562152RecruitingPhase 3
Atebimetinib Plus Gemcitabine/Nab-Paclitaxel for New Pancreatic Cancer
This trial tests a combination of three drugs—atebimetinib (a new targeted therapy), gemcitabine, and nab-paclitaxel (two standard chemotherapy drugs)—as a first treatment for pancreatic cancer that has spread beyond the pancreas. The goal is to see if adding atebimetinib helps patients live longer and feel better.
Duarte, CaliforniaAges 18 years+ - NCT06820463RecruitingPhase 2
Study of telisotuzumab adizutecan plus chemo for metastatic colorectal cancer
This trial tests a new drug combination for people with metastatic colorectal cancer. The study includes an experimental antibody-drug conjugate (telisotuzumab adizutecan) plus standard chemotherapy and targeted therapies, to see if it works better than current options.
Duarte, CaliforniaAges 18 years+ - NCT06863272RecruitingPhase 1/Phase 2
Study of ifinatamab deruxtecan for advanced prostate cancer
This trial tests a new drug, ifinatamab deruxtecan, either alone or in combination with other treatments, for men with metastatic castrate-resistant prostate cancer that has worsened despite hormone therapy. It aims to see if this approach can help shrink or slow the cancer.
Los Angeles, CaliforniaAges 18 years+ - NCT07213674RecruitingPhase 3
A study of xaluritamig plus abiraterone for prostate cancer
This trial tests a new combination of two drugs (xaluritamig plus abiraterone) for men with a type of advanced prostate cancer that is no longer responding to hormone therapy but has not yet been treated with chemotherapy. The goal is to see if this combination works better than the standard options your doctor might choose.
Duarte, CaliforniaAges 18 years+ - NCT05805371RecruitingPhase 1
PSCA CAR-T cells with or without radiation for prostate cancer
This Phase 1 study tests a prostate cancer treatment made of PSCA-targeted CAR-T cells, with or without radiation, to help control advanced prostate cancer. It aims to find a safe treatment approach and see how well it works in people whose cancer has PSCA.
Duarte, CaliforniaAges 18 years+ - NCT07318558RecruitingPhase 3
Study of Sac-TMT for advanced ovarian cancer without HRD
This trial is testing a new drug called Sac-TMT for people with advanced ovarian cancer that has not responded well to initial platinum-based chemotherapy and does not have a specific gene change called HRD. It aims to see if this drug can work better than standard treatment.
Walnut Creek, CaliforniaAges 18 years+ - NCT06952803RecruitingPhase 3
Testing a new drug for men with BRCA-related prostate cancer
This trial tests whether adding a new drug (saruparib) to standard radiation and hormone therapy can help prevent prostate cancer from spreading to other parts of the body. It is for men with high-risk prostate cancer that has a BRCA gene mutation.
La Jolla, CaliforniaAges 18 years+ - NCT07227597RecruitingPhase 1/Phase 2
Study of two experimental drugs for advanced small cell lung cancer
This study tests two experimental drugs, gocatamig and ifinatamab deruxtecan, for people with advanced small cell lung cancer. The goal is to see if this combination can help control the cancer, either as a first treatment or after initial standard therapy.
Santa Rosa, CaliforniaAges 18 years+ - NCT07059845RecruitingPhase 2
Studying mirvetuximab combos for ovarian cancer
This trial tests multiple combinations of the drug mirvetuximab soravtansine with other treatments for people with ovarian cancer. It aims to see how well these combos work and what side effects they cause.
La Jolla, CaliforniaAges 18 years+ - NCT06925737RecruitingPhase 3
Study of I-DXd for metastatic prostate cancer
This study tests a new drug called Ifinatamab Deruxtecan (I-DXd) for people with metastatic prostate cancer that has stopped responding to hormone therapy. It may help by targeting and destroying cancer cells in a different way.
Duarte, CaliforniaAges 18 years+ - NCT07198074RecruitingPhase 3
Testing Avastin added to chemo plus Keytruda for certain endometrial cancer
This study tests adding Avastin (bevacizumab) to the standard combination of chemotherapy (carboplatin and paclitaxel) plus immunotherapy (Keytruda) for advanced or recurrent endometrial cancer with a specific genetic makeup (pMMR and TP53 mutation). The goal is to see if adding Avastin helps shrink tumors or slow their growth.
Carmichael, 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 - NCT06225011RecruitingPhase 1
Can a common antidepressant help your immune system fight colorectal cancer before surgery?
This trial is testing whether a common antidepressant called fluoxetine (Prozac) can help your immune system fight colorectal cancer before surgery. It's for people with early-stage colorectal cancer who have not yet had treatment.
Los Angeles, 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 · 8 studies
- University of California, Irvine Medical Center / UC Irvine Health · 5 studies
- City of Hope Orange County Lennar Foundation Cancer Center · 4 studies
- Research Site · 3 studies
- Cedars-Sinai Medical Center · 2 studies
- Hoag Memorial Hospital Presbyterian · 2 studies
- Providence Medical Foundation · 2 studies
- Sansum Clinic · 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.