Clinical trials · California
Solid Tumor Cancer clinical trials in California
We’re tracking 313 recruiting solid tumor cancer studies with a site in California — including Early Phase 1, Phase 1, Phase 1/Phase 2, Phase 2/Phase 3, Phase 3 and Phase 4 studies, each written for real people, not researchers.
Recruiting studies in California
- NCT04890613RecruitingPhase 1
CX-5461 for cancers with BRCA or HRD gene changes
This Phase 1 trial tests CX-5461, a new cancer medicine, in people with certain solid tumors that have BRCA1/2 or related “HRD” gene mutations. The goal is to find out how the drug works, what dose is tolerable, and whether it can help shrink tumors.
Santa Monica, CaliforniaAges 18 years+ - NCT05985655RecruitingPhase 1/Phase 2
Study of GTAEXS617 for advanced solid tumors
This trial tests a new drug called GTAEXS617 for adults with certain advanced solid tumors that have not responded to standard treatments. It aims to see if the drug is safe and effective.
Los Angeles, 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+ - NCT06917079RecruitingPhase 1
BBO-11818 for KRAS-mutated cancers
This trial tests a new oral drug (BBO-11818) for people with solid tumors that have a specific KRAS mutation. It's for those whose cancer has spread or cannot be removed by surgery and who have not had other cancers recently.
San Francisco, CaliforniaAges 18 years+ - NCT03486873RecruitingPhase 3
Study extension for people on pembrolizumab, testing long-term safety
This trial follows people with advanced tumors who are already on pembrolizumab (or similar treatment) to check long-term safety and effectiveness. It may help your care team by monitoring benefits and side effects over a longer period.
Bakersfield, CaliforniaAges 18 years+ - NCT05208762RecruitingPhase 1
PD-L1 antibody drug study for advanced lung and head/neck cancers
This Phase 1 trial tests a new experimental drug (PF-08046054/SGN-PDL1V) in people with advanced solid tumors that have not responded to standard treatment or can’t use it. It is designed to see how the drug works and how safe it is, with a focus on tumors that have PD-L1 seen on prior lab testing.
Irvine, CaliforniaAges 18 years+ - NCT04142437Recruiting
Tracking how larotrectinib works for NTRK fusion cancers in routine care
This study follows people with cancers that have an NTRK gene fusion to learn how safe and effective larotrectinib is during everyday treatment. It may help confirm whether this medicine works well in real-world patients and side effects stay manageable.
Los Angeles, CaliforniaAges Any age - NCT07628634RecruitingEarly Phase 1
Testing a Low-Methionine Diet in Solid Tumor Patients
This early-stage study explores whether eating a diet low in methionine (a natural amino acid found in protein) might help people with advanced solid tumors. Researchers will track how this dietary change affects blood levels and may improve treatment outcomes alongside standard cancer care.
Orange, CaliforniaAges 18 years+ - NCT04389632RecruitingPhase 1
Sigvotatug vedotin for advanced solid tumors that spread
This early-stage study tests a drug called sigvotatug vedotin in people with advanced solid cancers that cannot be removed or have spread. It aims to see how well the treatment works and what side effects it causes.
Los Alamitos, CaliforniaAges 18 years+ - NCT06823167RecruitingPhase 1
Study of IM-1021 for advanced cancers
This trial tests a new drug (IM-1021) for people with advanced cancers like lymphoma or solid tumors who have run out of standard options. The drug targets a protein called ROR1, which is found on some cancer cells, and may help shrink tumors or slow their growth.
Duarte, CaliforniaAges 18 years+ - NCT06436157Recruiting
Genetic testing support through a nurse-led program
This study tests whether a special program led by oncology nurses can help more people with solid tumor cancers get genetic testing. If you are starting a new treatment and have not had genetic testing before, this program may help you learn about your cancer risks and treatment options.
Chico, CaliforniaAges 18 years+ - NCT07505771RecruitingEarly Phase 1
A study of 177Lu-IM-3050 for advanced solid tumors
This trial tests a new treatment called 177Lu-IM-3050 for people with advanced solid tumors that have not responded to or stopped working with standard treatments. The treatment targets a protein called FAP found on some cancer cells and may help shrink tumors or slow their growth.
Palo Alto, CaliforniaAges 18 years+ - NCT06131840RecruitingPhase 1
Study of SGN-CEACAM5C for advanced solid tumors
This trial tests a new drug called SGN-CEACAM5C in people with advanced solid tumors that have not responded to other treatments. The drug targets a protein on cancer cells to try to stop them from growing.
Duarte, CaliforniaAges 18 years+ - NCT03715933RecruitingPhase 1
Test drug INBRX-109 for advanced or metastatic solid tumors
This Phase 1 trial tests INBRX-109, a cancer-targeting drug, in people whose solid cancers are locally advanced or spread to other parts of the body. Because it’s Phase 1, the main goal is to see whether it’s safe and how well it can work for different tumor types that meet specific requirements.
San Francisco, CaliforniaAges 12–85 - NCT06400472RecruitingPhase 1
Study of LY4170156 for advanced solid tumors
This study tests a new drug called LY4170156 for people with certain advanced solid tumors. It aims to see if the drug is safe and how well it works.
La Jolla, CaliforniaAges 18 years+ - NCT06493552RecruitingPhase 2/Phase 3
Testing sEphB4-HSA in EphrinB2-high bladder cancer
This trial tests a new drug called sEphB4-HSA for people with a specific type of bladder cancer (urothelial carcinoma) that has high levels of a protein called EphrinB2. The study aims to see if this drug can shrink tumors or prevent them from growing, and it compares it to standard treatments like chemotherapy or immunotherapy.
Santa Monica, CaliforniaAges 18 years+ - NCT06500819RecruitingPhase 1
B7-H3 CAR T cells for relapsed solid tumors
This trial tests a new immune therapy using your own cells (called B7-H3 CAR T cells) to treat solid tumors that haven't responded to other treatments. It may help children and young adults with certain cancers that are hard to cure.
Palo Alto, CaliforniaAges 2–30 - NCT06551142RecruitingPhase 1
Study of GSK5764227 for advanced solid tumors
This study tests a new drug called GSK5764227 for people with advanced solid tumors. It aims to see if the drug is safe and works against cancer that has stopped responding to other treatments.
Stanford, CaliforniaAges 18 years+ - NCT06884618RecruitingPhase 1
Study of RO7673396 for advanced solid tumors with RAS mutations
This trial tests a new drug, RO7673396, for people with advanced solid tumors that have a RAS mutation. The goal is to see if the drug is safe and works against the cancer.
Duarte, CaliforniaAges 18 years+ - NCT07213791RecruitingPhase 1
Study of a new drug for FAP-positive cancers
This trial tests a new drug (LY4337713) for cancers that have a specific protein called FAP on their surface. It may be an option for people whose cancer has continued to grow after standard treatments.
Newport Beach, CaliforniaAges 18 years+ - NCT06541262RecruitingPhase 1/Phase 2
Silmitasertib plus chemo for relapsed solid tumors
This trial tests a new drug, silmitasertib, combined with standard chemotherapy for children and young adults with cancers that have come back or not responded to treatment. The goal is to see if this combination can shrink tumors or stop them from growing.
San Diego, CaliforniaAges Up to 30 years - NCT07486713RecruitingPhase 4
Olutasidenib drug interaction study for IDH1 mutation cancers
This trial tests how olutasidenib interacts with other drugs in people with cancers that have an IDH1 mutation, like certain leukemias or brain tumors. Participation may help determine the best way to take this treatment safely.
Orange, CaliforniaAges 18 years+ - NCT07064018RecruitingPhase 1/Phase 2
SPEDOX-6 for advanced solid tumors
This trial tests a new form of the chemotherapy drug doxorubicin, called SPEDOX-6, for people with certain advanced solid tumors that haven't responded to at least two prior treatments. The drug is designed to deliver doxorubicin directly to cancer cells while possibly reducing side effects.
Orange, CaliforniaAges 18 years+ - NCT04678648RecruitingPhase 1
Testing RSC-1255 in advanced cancers with RAS changes
This early study (Phase 1) tests a new drug, RSC-1255, in people with advanced or metastatic cancers that have RAS mutations. It’s mainly focused on whether the treatment can be given safely and at what dose, and to see if it may shrink tumors.
Los Angeles, CaliforniaAges 18 years+
Solid Tumor Cancer trials by city in California
Where these studies are running in California
Institutions with a site for the recruiting solid tumor cancer studies listed above.
- City of Hope Comprehensive Cancer Center · 5 studies
- University of California, Irvine Medical Center / UC Irvine Health · 5 studies
- University of California, Los Angeles (UCLA) · 4 studies
- Stanford University · 3 studies
- University of California, Davis Medical Center · 3 studies
- Hoag Memorial Hospital Presbyterian · 2 studies
- Providence Medical Foundation · 2 studies
- Sarcoma Oncology Center · 2 studies
What taking part in a solid tumor 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.
Solid Tumor Cancer trials in other states
Common questions
- Are there solid tumor cancer clinical trials in California?
- Yes. We're currently tracking 313 recruiting solid tumor 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 solid tumor 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 solid tumor 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 solid tumor 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.