Clinical trials · California
Breast Cancer Invasive clinical trials in California
We’re tracking 68 recruiting breast cancer invasive studies with a site in California — including Phase 1, Phase 2 and Phase 3 studies, each written for real people, not researchers.
Recruiting studies in California
- NCT05856773RecruitingPhase 3
Standard vs shorter radiation to lymph nodes for breast cancer
This trial compares two ways of giving radiation to the breast/chest wall and nearby lymph nodes after breast surgery: a standard schedule versus a shorter “hypofractionated” schedule. It uses proton therapy and may help reduce treatment time while still controlling the cancer.
San Diego, CaliforniaAges 19 years+ - NCT05879926RecruitingPhase 3
Testing chemo after hormone therapy in premenopausal early breast cancer
This Phase 3 trial checks whether adding chemotherapy after standard hormone-blocking treatment works better for some premenopausal women with early-stage, ER-positive, HER2-negative breast cancer. It targets patients with limited lymph node spread and a lower-to-intermediate tumor “recurrence” risk score.
Anaheim, CaliforniaAges 18–60 - NCT07173751RecruitingPhase 3
Pumitamig for advanced triple-negative breast cancer
This study tests a new drug called pumitamig for people with a type of breast cancer that is triple-negative or has very low hormone receptors and has come back or spread. It aims to see if pumitamig works better than standard treatment and how safe it is for people who cannot get PD(L)-1 immunotherapy with chemo.
La Jolla, CaliforniaAges 18 years+ - NCT04282044RecruitingPhase 1
CRX100 drug trial for advanced cancers with or without pembrolizumab
This Phase 1 trial tests CRX100 (a new cancer medicine) alone and with pembrolizumab (an immune checkpoint drug) in people with advanced solid tumors. It’s mainly designed to check safety and side effects, and to see whether tumors respond, potentially helping people whose cancer has come back or stopped responding to standard treatment.
Stanford, CaliforniaAges 18 years+ - NCT07287098RecruitingPhase 2
Imlunestrant for premenopausal women with ER+/HER2- early breast cancer
This trial tests a new hormone-blocking pill (imlunestrant) in premenopausal women with early-stage ER+/HER2- breast cancer. Depending on whether you've had prior hormone therapy, the study will see if this treatment works better than standard options.
Duarte, CaliforniaAges 18 years+ - NCT06173349RecruitingPhase 1
New bladder therapy for BCG-resistant bladder cancer
This trial tests a new treatment for bladder cancer that does not respond to standard BCG therapy. The treatment uses tiny particles (micelles) that deliver a chemotherapy drug directly into the bladder, aiming to destroy cancer cells without needing surgery.
Sacramento, CaliforniaAges 18 years+ - NCT07061964RecruitingPhase 2
Immunotherapy and radiation to save the bladder
This trial tests whether combining immunotherapy and low-dose radiation after chemotherapy can help you avoid bladder removal. It's for people whose muscle-invasive bladder cancer has shrunk significantly after initial treatment.
Beverly Hills, CaliforniaAges 18 years+ - NCT03448926Recruiting
DCIS test registry to guide radiation and drug decisions
This study collects information from people with breast ductal carcinoma in situ (DCIS) to see how a specific lab test (DCISionRT) may help predict who benefits from radiation and/or certain medications. Your results and clinical details are gathered during routine care, not necessarily to change treatment right away.
San Mateo, CaliforniaAges 30–85 - NCT06336928Recruiting
Blood test validation for breast cancer diagnosis
This study is testing a new blood test (liquid biopsy) to see if it can accurately detect breast cancer or track remission. If you are a woman getting a mammogram, have an abnormal finding, were recently diagnosed, or are in remission after treatment, you may be able to join and help validate this test.
Newport Beach, CaliforniaAges 18 years+ - NCT06809140RecruitingPhase 2
Bladder-sparing treatment for muscle-invasive bladder cancer
This trial tests a combination of two drugs, enfortumab vedotin and pembrolizumab, to treat bladder cancer that has grown into the muscle of the bladder. The goal is to shrink or eliminate the cancer so that surgery to remove the bladder may not be needed.
Duarte, CaliforniaAges 18 years+ - NCT06731894RecruitingPhase 2
Cannabis for nerve pain after chemotherapy in breast and colon cancer survivors
This trial tests whether a cannabis-based product can reduce nerve damage (neuropathy) caused by chemotherapy in people who have finished treatment for breast or colon cancer. It focuses on survivors who still have pain, numbness, or tingling in their hands or feet.
Irvine, CaliforniaAges 18 years+ - NCT07060807RecruitingPhase 3
Study of Patritumab Deruxtecan for Advanced HR+/HER2- Breast Cancer
This trial tests a new drug called patritumab deruxtecan (a targeted therapy) for people with a common type of advanced breast cancer (HR+/HER2-). It's for those whose cancer has grown despite treatment with a CDK4/6 inhibitor plus hormone therapy.
Los Angeles, CaliforniaAges 18 years+ - NCT06919965RecruitingPhase 3
TAR-210 vs. standard bladder chemo for high-risk bladder cancer
This trial compares a new drug called TAR-210, given directly into the bladder, to standard chemotherapy for people with a specific type of high-risk bladder cancer that has not invaded muscle. It tests if TAR-210 can be more effective with fewer side effects.
Los Angeles, CaliforniaAges 18 years+ - NCT07000084RecruitingPhase 3
Testing gemcitabine with BCG for returning bladder cancer
This trial tests whether adding a chemotherapy drug called gemcitabine to the usual BCG therapy can help prevent bladder cancer from coming back again. If you have had BCG before and your cancer returned, this study might offer a more effective treatment option.
Irvine, CaliforniaAges 18 years+ - NCT05232916RecruitingPhase 3
Vaccine for HER2-positive breast cancer after standard treatment
This trial tests a vaccine (GLSI-100) that may help prevent the return of HER2-positive breast cancer. It is given to patients who still had cancer cells after initial treatment with trastuzumab, or who had stage III disease and achieved a complete response.
Duarte, CaliforniaAges 18–100 - NCT06353997RecruitingPhase 2
New immunotherapy combination before surgery for triple-negative breast cancer
This trial tests a new combination of two immunotherapy drugs (INBRX-106 and pembrolizumab) given before surgery for people with early-stage triple-negative breast cancer. The goal is to see if this treatment can shrink the tumor and improve outcomes.
Los Angeles, CaliforniaAges 18 years+ - NCT06682728RecruitingPhase 2
Treating high-risk bladder cancer after surgery
This trial tests a combination of two drugs (sacituzumab govitecan and nivolumab) given after surgery to prevent the return of muscle-invasive bladder cancer. It is for patients whose cancer has a high chance of coming back despite surgery.
Orange, CaliforniaAges 18 years+ - NCT06995677RecruitingPhase 2
TYRA-300 pill for low-grade bladder cancer with FGFR3 change
This study tests an experimental pill called TYRA-300 for people with low-grade bladder cancer that hasn't spread into the muscle layer. The pill targets a specific gene change (FGFR3) found in the tumor. The goal is to see if it can slow or shrink the cancer.
Murrieta, CaliforniaAges 18 years+ - NCT06605404Recruiting
Pan-tumor study of a blood test after cancer surgery
This study is testing a new blood test that looks for leftover cancer cells after surgery. It is for people with different types of solid tumors who are planning to have surgery to cure their cancer. The goal is to see if the test can help guide future treatment decisions.
San Diego, CaliforniaAges 18 years+ - NCT07168993Recruiting
Testing a new sputum test for lung cancer in high-risk adults
This study tests a new, non-invasive sputum test (FlowPath Lung) to see if it can accurately detect lung cancer in people at high risk who have a lung nodule. If you are between 50 and 80, have a smoking history, and have a lung nodule, this test may help decide if further steps are needed.
Palo Alto, CaliforniaAges 50–80
Where these studies are running in California
Institutions with a site for the recruiting breast cancer invasive studies listed above.
- City of Hope Comprehensive Cancer Center · 6 studies
- City of Hope Orange County Lennar Foundation Cancer Center · 5 studies
- USC / Norris Comprehensive Cancer Center · 4 studies
- Cedars-Sinai Medical Center · 3 studies
- Keck Medicine of USC · 3 studies
- Los Angeles General Medical Center · 3 studies
- Stanford University · 3 studies
- University of California Davis Comprehensive Cancer Center · 3 studies
What taking part in a breast cancer invasive 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.
Breast Cancer Invasive trials in other states
Common questions
- Are there breast cancer invasive clinical trials in California?
- Yes. We're currently tracking 68 recruiting breast cancer invasive 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 breast cancer invasive 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 breast cancer invasive 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 breast cancer invasive 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.