Clinical trials · California
Solid Tumor clinical trials in California
We’re tracking 328 recruiting solid tumor 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
- 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+ - NCT05970497RecruitingPhase 1/Phase 2
KB707 trial for advanced solid tumors after other treatments
This early-stage trial tests KB707 in people with locally advanced or metastatic solid tumors that have not responded well to standard treatments. If you qualify, you may receive KB707 to see how well it can shrink tumors or control the disease.
Los Angeles, CaliforniaAges 18 years+ - NCT05983432RecruitingPhase 1
Study of BL-B01D1 for advanced lung and other solid tumors
This trial tests an experimental drug called BL-B01D1 for people with several types of advanced solid tumors, especially non-small cell lung cancer and breast cancer. It's designed for those whose cancer has continued to grow after standard treatments.
Orange, CaliforniaAges 18 years+ - NCT06005740RecruitingPhase 1
Study of TORL-4-500 for advanced solid tumors
This trial tests a new investigational drug, TORL-4-500, for people with advanced solid tumors that have not responded to other treatments. It aims to find a safe dose and see if the drug can help shrink or control the cancer.
Torrance, CaliforniaAges 18 years+ - NCT06014658RecruitingPhase 1/Phase 2
Study of MBRC-101 for advanced solid tumors
This trial tests a new drug, MBRC-101, that targets a protein called EphA5 found on some cancer cells. It is for people with advanced solid tumors (like lung, breast, or pancreatic cancer) that have stopped responding to other treatments. The study aims to find a safe dose and see if the drug can shrink tumors.
San Francisco, CaliforniaAges 18 years+ - NCT06103669Recruiting
Local treatment for limited cancer spread
This trial tests whether using local treatments (like targeted radiation or ablation) on a few new spots of cancer can help people whose cancer is otherwise stable on their current treatment. It enrolls people with various solid tumors, such as breast, gynecologic, head & neck, sarcoma, or other types.
Sacramento, CaliforniaAges 18 years+ - NCT07020117RecruitingPhase 1
Study of AKY-1189 for advanced solid tumors
This trial tests a new radioactive drug, AKY-1189, for people with solid tumors that have spread or cannot be removed. It may help if other treatments have stopped working.
Duarte, CaliforniaAges 18 years+ - 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+ - NCT06401356RecruitingPhase 3
Long-term study for people already taking pelabresib
This is a follow-up study for people who are already taking the drug pelabresib in another trial and are doing well on it. It allows you to continue receiving pelabresib and monitors your health over a longer period.
Los Angeles, CaliforniaAges 18 years+ - NCT06445062RecruitingPhase 1/Phase 2
Study of new RAS inhibitors for GI solid tumors
This trial tests new drugs that target specific RAS mutations in advanced gastrointestinal cancers, like pancreatic or colorectal cancer. It aims to see if these drugs can shrink tumors or slow their growth.
La Jolla, CaliforniaAges 18 years+ - NCT05873686RecruitingPhase 1
Study of NXP900 for advanced solid tumors
This trial tests a new drug called NXP900 for people with advanced solid tumors that have not responded to other treatments. The study has two parts: one for any advanced solid tumor and another for tumors with specific genetic changes.
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 - NCT06515613RecruitingPhase 1
Testing CTIM-76 for recurrent ovarian and other advanced cancers
This trial tests a new drug, CTIM-76, in people whose ovarian, testicular, or endometrial cancer has come back and is not responding to standard treatments. It aims to see if the drug can shrink tumors or stop them from growing.
Beverly Hills, CaliforniaAges 18 years+ - 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+ - NCT06582017RecruitingPhase 1
Study of QXL138AM for advanced solid tumors and multiple myeloma
This trial tests an investigational drug called QXL138AM for people with advanced solid tumors or multiple myeloma that has not responded to standard treatments. The goal is to see if the drug is safe and effective.
Newport, CaliforniaAges 18 years+ - NCT06586515RecruitingPhase 1
Testing a new drug for cancers with KRAS G12D mutation
This trial tests a new pill (LY3962673) for people whose cancer has a specific DNA change called KRAS G12D. The drug aims to block the faulty protein that helps the cancer grow, and the study will look at safety and whether the tumor shrinks.
Santa Monica, CaliforniaAges 18 years+ - NCT06535607RecruitingPhase 2
Study of volrustomig for advanced solid tumors
This trial tests a new drug called volrustomig, alone or with other cancer treatments, for people with advanced or metastatic solid tumors. It aims to see if the drug can help shrink or control the cancer.
Los Angeles, 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+ - NCT06796907RecruitingPhase 1/Phase 2
Mocertatug rezetecan with other drugs for advanced solid tumors
This trial tests a new drug, mocertatug rezetecan, combined with other anti-cancer therapies for people with advanced solid tumors like endometrial or ovarian cancer. It aims to see if the combination is safe and effective.
La Jolla, CaliforniaAges 18 years+ - NCT06730347RecruitingPhase 2
Study of lorigerlimab for advanced ovarian and other cancers
This trial tests a new drug, lorigerlimab, for people with certain types of ovarian cancer or related cancers that have come back or not responded to treatment. The goal is to see if the drug can help shrink tumors or slow the disease.
Los Angeles, CaliforniaAges 18 years+ - NCT06736379RecruitingPhase 1
RNA Therapy Injections for Head and Neck Cancer
This trial tests a new type of immunotherapy made of self-amplifying RNA (saRNA) that produces a protein called IL-12. It's injected directly into head and neck tumors to help your immune system fight the cancer. The study is for people whose cancer has not responded well to standard treatments or who are having surgery to remove their tumor.
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+ - NCT06887348Recruiting
Long-term safety study for prior RP1, RP2, or RP3 patients
This study checks the long-term safety of patients who have already received RP1, RP2, or RP3 treatment in a previous study. It helps doctors understand any side effects that may appear over time.
La Jolla, CaliforniaAges 18 years+
Solid Tumor trials by city in California
Where these studies are running in California
Institutions with a site for the recruiting solid tumor studies listed above.
- University of California, Los Angeles (UCLA) · 6 studies
- City of Hope Comprehensive Cancer Center · 4 studies
- Hoag Memorial Hospital Presbyterian · 3 studies
- UC San Diego Moores Cancer Center · 3 studies
- Cedars-Sinai Medical Center · 2 studies
- GSK Investigational Site · 2 studies
- Providence Medical Foundation · 2 studies
- Stanford University · 2 studies
What taking part in a solid tumor 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 trials in other states
Common questions
- Are there solid tumor clinical trials in California?
- Yes. We're currently tracking 328 recruiting solid tumor 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 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 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 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.