Clinical trials · California
Cancer clinical trials in California
We’re tracking 1,320 recruiting cancer studies with a site in California — including Phase 1, Phase 1/Phase 2 and Phase 2 studies, each written for real people, not researchers.
Recruiting studies in California
- NCT04221893Recruiting
Radiation therapy for metastatic gastrointestinal cancers
This trial tests whether adding radiation therapy to your current immunotherapy can help control cancer that has spread in the digestive system. It aims to improve symptoms and possibly slow the cancer's growth.
Walnut Creek, CaliforniaAges 18 years+ - NCT06465069RecruitingPhase 1
Study of an experimental drug for advanced bladder and other cancers
This trial tests a new drug called LY4052031 for people with advanced or metastatic cancers, especially bladder cancer. The drug aims to slow or stop tumor growth. Doctors will check if it is safe and how well it works.
Duarte, CaliforniaAges 18 years+ - NCT07406087Recruiting
Navigation support for young adults after cancer
This study tests a navigation program to help cancer survivors ages 21-45 get the follow-up care they need. It may be a good fit if you were diagnosed with certain cancers as a teen or young adult.
Pasadena, CaliforniaAges 21–45 - NCT06583395Enrolling by invitation
Meditation retreat study with fitness tracker
This trial studies people attending a 7-day meditation retreat to see how meditation affects well-being. You will wear a fitness tracker and answer surveys.
Palm Desert, CaliforniaAges 21 years+ - NCT06172478RecruitingPhase 2
HER3-DXd for advanced solid tumors after prior treatment
This trial tests a new targeted drug called HER3-DXd for people with several types of advanced solid tumors that have stopped responding to standard treatments. The drug is an antibody-drug conjugate, designed to deliver chemotherapy directly to cancer cells that have a protein called HER3 on their surface.
Duarte, CaliforniaAges 18 years+ - NCT06051695RecruitingPhase 1/Phase 2
CAR T cell therapy for mesothelin-positive solid tumors
This trial tests a new type of immune cell therapy (CAR T-cells) designed to target cancer cells that have a protein called mesothelin but have lost a marker that lets them hide from the immune system. It's for people with advanced solid tumors who have already tried standard treatments.
Los Angeles, CaliforniaAges 18 years+ - NCT04703101RecruitingPhase 1
Short radiation plus chemo for stage II–III rectal cancer
This trial tests a short course of radiation therapy combined with chemotherapy for people with stage II or III rectal cancer. It’s designed to see whether this approach is safe and effective before or around cancer surgery.
Los Angeles, CaliforniaAges 18 years+ - NCT07817147Recruiting
Microwave ablation treatment for advanced cancer
This study tests a procedure called microwave ablation (using heat to destroy cancer cells) for tumors that are hard to remove with surgery. It aims to see if the procedure is safe and effective when done through a scope in the stomach.
Los Angeles, CaliforniaAges 18 years+ - NCT07529808RecruitingPhase 1/Phase 2
New Drug BHB810 for Advanced Stomach Cancer
This trial tests a new drug called BHB810 for gastric (stomach) and gastroesophageal junction cancer that has stopped responding to standard treatments or has no standard options available. The drug targets a protein called CDH17 found on cancer cells and may help slow or shrink the tumor.
Duarte, CaliforniaAges 18 years+ - NCT07447050RecruitingPhase 2
Riluzole to Prevent Chemo-Related Cognitive Problems
This pilot study tests whether the drug riluzole can help prevent the thinking and memory problems (often called 'chemobrain') that some people experience during chemotherapy. If you are about to start a chemo regimen containing an anthracycline or platinum drug, you may be able to join.
Orange, CaliforniaAges 18 years+ - NCT07195734RecruitingPhase 2
Adding chemo or immunotherapy before surgery for advanced head and neck cancer
This trial tests whether giving chemotherapy or chemotherapy plus immunotherapy before surgery can improve outcomes for people with advanced head and neck cancer that has come back or not gone away after prior treatment.
Los Angeles, CaliforniaAges 18 years+ - NCT06943521RecruitingPhase 1/Phase 2
Study of MT-4561 for advanced solid tumors
This trial tests a new drug called MT-4561 in people with advanced solid tumors that have not responded to prior treatments. It aims to see if the drug can help shrink tumors or slow their growth.
Los Angeles, CaliforniaAges 18 years+ - NCT06682793RecruitingPhase 1/Phase 2
Study of A2B395 therapy for solid tumors with EGFR and HLA loss
This trial tests a new cell therapy called A2B395 for cancers that have EGFR, a protein on the cell surface, and have lost a specific marker called HLA-A*02. The therapy uses specially engineered immune cells to target and kill these cancer cells. This may help patients with colorectal, lung, head and neck, breast, kidney, or other solid tumors that are no longer responding to standard treatments.
Los Angeles, CaliforniaAges 18 years+ - NCT06625775RecruitingPhase 1
Study of BBO-10203 for advanced solid tumors
This trial tests a new drug called BBO-10203, alone or combined with other cancer treatments, for people with certain advanced breast, colorectal, or lung cancers. It aims to see if the drug is safe and effective.
Duarte, CaliforniaAges 18 years+ - NCT06293898RecruitingPhase 1
Study of BL-M07D1 for HER2-positive solid tumors
This trial tests a new drug, BL-M07D1, for people with advanced solid tumors that have a protein called HER2. It is for patients who have already tried at least two other standard treatments.
Duarte, CaliforniaAges 18 years+ - NCT06253871RecruitingPhase 1
Study of IAM1363 for HER2 Cancers
This trial tests a new oral drug called IAM1363 for people with HER2-altered cancers that have stopped responding to previous treatments. The goal is to see if the drug is safe and how well it works against these cancers.
La Jolla, 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.
Beverly Hills, CaliforniaAges 18 years+ - NCT05136846RecruitingPhase 1
Papaverine with chemoradiation for stage II–III lung cancer
This early-phase trial tests whether adding papaverine to standard chemoradiation can improve treatment for stage II–III non-small cell lung cancer (and some limited stage IV cases). It aims to see if the combination is safe and tolerable while targeting the cancer with radiation and chemotherapy.
Duarte, CaliforniaAges 18 years+ - NCT04945642Recruiting
Radiation combination therapy for intermediate to high-risk prostate cancer
This trial studies a combination of two radiation types—high-dose-rate brachytherapy and stereotactic body radiotherapy—to treat certain intermediate- to high-risk prostate cancers. It may help by aiming radiation closely at the prostate while also targeting the cancer from outside the body.
Los Angeles, CaliforniaAges 18 years+ - NCT06586957RecruitingPhase 1
Study of NKT3964 for advanced solid tumors
This trial tests an experimental drug called NKT3964 for people with certain advanced cancers that have stopped responding to standard treatments. It aims to see if the drug can shrink tumors or slow their growth.
Los Angeles, CaliforniaAges 19 years+ - NCT07517198RecruitingPhase 1
EXS74539 Study for Advanced Solid Tumors
This is an early-stage study testing a new cancer drug called EXS74539 to find the right dose and see how well it works in people with various advanced solid tumors. The drug may help patients whose cancers have stopped responding to standard treatments.
Los Angeles, CaliforniaAges 18 years+ - NCT07227168RecruitingPhase 1
Study of STRO-004 for advanced solid tumors
This trial tests a new drug called STRO-004 for people with advanced solid tumors (cancers that have spread or come back). It aims to see if the drug is safe and effective for those who have already tried other treatments.
San Diego, CaliforniaAges 18 years+ - NCT07218003Enrolling by invitationPhase 1
Study of RNDO-564 alone or with pembrolizumab for bladder cancer
This trial tests an experimental drug, RNDO-564, either by itself or combined with another drug (pembrolizumab), for people with advanced bladder cancer or other solid tumors that have stopped responding to standard treatments. The goal is to see if it can shrink tumors or slow cancer growth.
San Francisco, CaliforniaAges 18 years+ - NCT06980038RecruitingPhase 2
Testing two immunotherapy drugs before surgery for advanced head and neck cancer
This trial tests whether adding a second immunotherapy drug (CDX-1140) to the standard immunotherapy cemiplimab before surgery is better than cemiplimab alone for people with stage III-IV head and neck cancer that can be removed with surgery.
Irvine, 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 · 6 studies
- University of California San Diego Moores Cancer Center · 4 studies
- University of California, Los Angeles (UCLA) · 4 studies
- USC Norris Comprehensive Cancer Center · 3 studies
- Cedars-Sinai Medical Center · 2 studies
- Stanford University · 2 studies
- UCSF Medical Center · 2 studies
- University of California, Los Angeles · 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 1,320 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.