Clinical trials · California
Metastatic Breast Cancer clinical trials in California
We’re tracking 203 recruiting metastatic breast 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
- NCT05408845RecruitingPhase 2
Study drug vs standard care for HER2 salivary gland cancer
This Phase 2 trial tests how well ado-trastuzumab emtansine (and compares to two standard treatment options) works for salivary gland cancers that are HER2-positive or HER2-low. It aims to see whether the study drug can control cancer better and with acceptable side effects.
Duarte, CaliforniaAges 18 years+ - NCT07452224RecruitingPhase 2
Combination treatment for advanced lung cancer
This trial tests a new drug, ILKN421H, combined with pembrolizumab (a type of immunotherapy) for people with advanced non-small cell lung cancer (NSCLC) that has not responded to standard treatments or has not been treated before. It aims to see if this combination can help shrink tumors or slow their growth.
Los Angeles, CaliforniaAges 18 years+ - NCT07046923RecruitingPhase 1
A study of LY4175408 for advanced cancer
This trial tests a new targeted drug (LY4175408) for people with certain advanced solid tumors (lung, endometrial, or triple negative breast cancer) who have already tried standard treatments. The goal is to see if the drug is safe and effective.
Stanford, 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 - NCT03053193Recruiting
Testing gene activity to guide breast cancer treatment
This study links breast tumor test results from MammaPrint and optional BluePrint (and full genetic data) with real-world clinical information to understand which new gene activity patterns matter. It may help future patients by improving how doctors use these tests to guide care.
Redding, CaliforniaAges 18 years+ - NCT04621435RecruitingPhase 1
PET imaging test for solid tumors using FAP-2286
This Phase 1 study tests a special imaging scan (using FAP-2286) to see solid tumors in people who have already been diagnosed. It may help doctors better detect where cancer is in the body and how to plan treatment.
San Francisco, CaliforniaAges 18 years+ - NCT05768139RecruitingPhase 1/Phase 2
Testing a new targeted drug for advanced solid tumors with PI3Kα mutation
This trial tests tersolisib, a new targeted medicine, in adults with advanced or hard-to-remove solid cancers. It focuses on tumors that have a specific genetic change (PI3Kα mutation) to see how well the treatment works and what side effects it causes.
Los Angeles, CaliforniaAges 18 years+ - 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+ - NCT06908928RecruitingPhase 1
Study of Bulumtatug Fuvedotin for advanced triple-negative breast cancer
This study tests a new drug called bulumtatug fuvedotin for people with triple-negative breast cancer that has spread or come back. It's for those who have already tried certain other treatments, including a taxane and a specific type of antibody-drug conjugate.
La Jolla, CaliforniaAges 18 years+ - NCT06993844RecruitingPhase 1/Phase 2
Study of ETX-636 for advanced solid tumors with PIK3CA mutation
This trial tests an experimental drug called ETX-636 in people whose cancer has a specific gene change (PIK3CA mutation) and has not responded to at least one prior treatment. The goal is to see if the drug can shrink tumors or stop them from growing.
San Francisco, CaliforniaAges 18 years+ - NCT05372614RecruitingPhase 1
Testing trastuzumab deruxtecan and neratinib for HER2-positive cancers
This trial tests a combination of two targeted drugs, trastuzumab deruxtecan (Enhertu) and neratinib, for people with solid tumors that have a HER2 gene change. The goal is to see if the combination is safe and works well for cancers that have not responded to at least one prior treatment.
Duarte, CaliforniaAges 18 years+ - NCT07114601RecruitingPhase 1
Study of LY4257496 for people with GRPR-positive solid tumors
This trial tests a new drug, LY4257496, in people with certain types of cancer that have a protein called GRPR on their cells. The study aims to see if the drug can help shrink tumors or slow the cancer's growth.
Duarte, CaliforniaAges 18 years+ - NCT04534205RecruitingPhase 2/Phase 3
Testing BNT113 plus pembrolizumab versus pembrolizumab alone
This trial studies whether adding BNT113 to pembrolizumab works better and is safe for people with HPV16-positive head and neck cancer that can’t be cured with local treatments. It also compares outcomes to pembrolizumab alone, specifically for tumors that show PD-L1 in testing.
Los Angeles, CaliforniaAges 18 years+ - NCT07344220Enrolling by invitationPhase 2
Maintenance therapy study for stable metastatic pancreatic cancer
This trial tests a new drug, DZ-002, as maintenance therapy for people with metastatic pancreatic cancer whose disease has not worsened after at least 4 months of first-line chemotherapy. The goal is to help keep the cancer under control with fewer side effects.
Newport Beach, CaliforniaAges 18 years+ - NCT06228482RecruitingPhase 1
Targeted radioactive therapy for advanced lung cancer
This trial tests a new targeted radioactive drug that seeks out a specific marker on lung cancer cells. It first uses a low-dose imaging scan to see if the cancer cells have this marker, then gives a higher-dose treatment to destroy those cells.
Sacramento, CaliforniaAges 18 years+ - NCT06216301RecruitingPhase 3
Electric fields with immunotherapy and chemo for advanced lung cancer
This trial tests adding a device that delivers electric fields (Tumor Treating Fields) to standard immunotherapy and chemotherapy for people with advanced non-small cell lung cancer that has not been treated before. It may help slow tumor growth.
Sacramento, CaliforniaAges 18 years+ - NCT05789082RecruitingPhase 1/Phase 2
Divarasib for untreated lung cancer with KRAS G12C
This trial studies divarasib to see if it is safe and can shrink or control advanced lung cancer. Participants must have a KRAS G12C mutation and have not had prior treatment for their advanced disease.
Duarte, CaliforniaAges 18 years+ - NCT07012031RecruitingPhase 1/Phase 2
Sotorasib and trastuzumab deruxtecan for KRAS G12C lung cancer
This trial tests a combination of two drugs, sotorasib and trastuzumab deruxtecan, for people with advanced or metastatic non-small cell lung cancer that has a KRAS G12C mutation. It may be an option if you've already had treatment with a KRAS G12C inhibitor, immunotherapy, and chemotherapy.
Sacramento, CaliforniaAges 18 years+ - NCT06524544RecruitingPhase 3
Pembrolizumab and sacituzumab govitecan for advanced bladder cancer
This trial tests a new drug combination (pembrolizumab and sacituzumab govitecan) against standard treatment for advanced bladder cancer that has spread or cannot be removed by surgery. It's for people who have already tried an immunotherapy drug like pembrolizumab and another drug called enfortumab vedotin.
Irvine, CaliforniaAges 18 years+ - NCT07225946RecruitingPhase 3
Study of pasritamig with docetaxel for advanced prostate cancer
This trial tests a new drug called pasritamig combined with the chemotherapy docetaxel, compared to docetaxel alone, in men with prostate cancer that has spread and is no longer responding to hormone therapy.
Fountain Valley, CaliforniaAges 18 years+ - NCT05694715RecruitingPhase 1
Test combo treatment for cancers with DNA repair gene mutations
This Phase 1 study tests a combination of medicines (including niraparib and irinotecan) for advanced solid tumors that have specific DNA repair gene changes, such as BRCA1/2 or related defects. It aims to see whether the treatment can shrink tumors and is safe enough to continue studying.
San Francisco, CaliforniaAges 18 years+ - NCT07217704RecruitingPhase 3
New PET scan to find stomach or esophageal cancer spread
This trial tests a new PET scan drug (18F-FAPI) to see if it can better detect where stomach or esophageal cancer has spread. It may help doctors plan the right treatment for you.
Cerritos, CaliforniaAges 18 years+ - NCT06218914RecruitingPhase 1
Study of a new treatment for KRAS G12D cancers
This trial tests a new type of cell therapy (called TCR-T) that targets a specific genetic change (KRAS G12D) in advanced solid tumors that have stopped responding to standard treatments. It may be an option if your cancer has this mutation and you have a specific tissue type (HLA).
Duarte, CaliforniaAges 18 years+ - NCT06399419RecruitingPhase 1
Study of CBM588 with immunotherapy for advanced kidney cancer
This trial tests whether adding a probiotic (CBM588) to a standard immunotherapy combination (nivolumab and ipilimumab) helps treat advanced kidney cancer. It is for people with a specific type of kidney cancer that has spread or cannot be removed with surgery, who have not had systemic treatment before.
Duarte, CaliforniaAges 18 years+
Metastatic Breast Cancer trials by city in California
Where these studies are running in California
Institutions with a site for the recruiting metastatic breast cancer studies listed above.
- City of Hope Comprehensive Cancer Center · 8 studies
- University of California, San Francisco · 6 studies
- City of Hope Orange County Lennar Foundation Cancer Center · 4 studies
- University of California San Diego Health · 4 studies
- Hoag Memorial Hospital Presbyterian · 3 studies
- Stanford University · 3 studies
- University of California Davis Comprehensive Cancer Center · 3 studies
- City of Hope · 2 studies
What taking part in a metastatic breast 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.
Metastatic Breast Cancer trials in other states
Common questions
- Are there metastatic breast cancer clinical trials in California?
- Yes. We're currently tracking 203 recruiting metastatic breast 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 metastatic breast 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 metastatic breast 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 metastatic breast 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.