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, Phase 2, Phase 2/Phase 3 and Phase 3 studies, each written for real people, not researchers.
Recruiting studies in California
- NCT07463807RecruitingPhase 1/Phase 2
Comparing two drug combinations for multiple myeloma that returned quickly
This study tests a new combination of two drugs, teclistamab and pomalidomide, against the usual treatment of three drugs for multiple myeloma that has come back shortly after a standard treatment. The goal is to see if the new combination works better or is safer.
Duarte, CaliforniaAges 18 years+ - NCT05621291Recruiting
Sequencing test to guide care after CD19 CAR T in kids
This study checks a DNA-based lab test (next-generation sequencing, or NGS) to monitor B-cell recovery after CD19 CAR T treatment in children and young adults. The goal is to see whether the test can help guide management while looking for remission and safe recovery.
Los Angeles, CaliforniaAges 1–25 - NCT05773274RecruitingPhase 2
Retreating with 177Lu-DOTATATE radiation versus usual treatment
This trial tests whether repeating a targeted radioactive treatment (177Lu-DOTATATE) works better than standard options in people with metastatic gastroenteropancreatic neuroendocrine tumors. It may help by controlling tumor growth after the first round of this therapy stops working.
San Francisco, CaliforniaAges 18 years+ - NCT05058651RecruitingPhase 2/Phase 3
Atezolizumab plus chemo for advanced neuroendocrine cancer outside the lung
This trial tests whether adding an immunotherapy drug called atezolizumab to standard chemotherapy helps people with advanced neuroendocrine carcinoma (a rare and aggressive cancer) that started outside the lung. The goal is to see if the combination works better than chemo alone.
Anaheim, CaliforniaAges 18 years+ - NCT05772130Recruiting
Help family members get cancer genetic test results and counseling
This study tests a family-centered way to share cancer genetic testing results with close relatives, so more relatives get genetic counseling and testing. It may help your eligible family members understand their risk and get the right next steps.
Duarte, CaliforniaAges 18 years+ - NCT06623422RecruitingPhase 3
Vaccine plus Keytruda for lung cancer after surgery
This trial tests combining a cancer vaccine (V940) with the immunotherapy drug pembrolizumab (Keytruda) for people with non-small cell lung cancer that was treated with chemo and Keytruda before surgery but wasn't completely removed. The goal is to see if adding the vaccine helps prevent the cancer from coming back.
Fullerton, CaliforniaAges 18 years+ - NCT06179069RecruitingPhase 1
Study of ZL-1310 for small cell lung cancer
This trial tests a new drug called ZL-1310, alone or with other treatments, for people with small cell lung cancer that has spread (extensive-stage). It aims to see if ZL-1310 can help shrink tumors or slow the disease.
Duarte, CaliforniaAges 18 years+ - NCT05633615RecruitingPhase 2
Testing new drug options after CAR T for aggressive lymphoma
This Phase 2 study tests whether adding or switching drug treatments after CAR T-cell therapy can improve outcomes for people with certain aggressive lymphomas that have come back or did not respond. It mainly looks at who remains disease-stable/partly improved after CAR T and what treatment approach works best next.
Costa Mesa, CaliforniaAges 18 years+ - NCT07226986RecruitingPhase 1/Phase 2
Study of AMO959 with Lutetium-177 and ARPI for prostate cancer
This trial tests a new combination therapy for men with advanced prostate cancer that has spread and is no longer responding to hormone therapy. It combines an experimental drug (AMO959) with a targeted radiation treatment (Lutetium-177) and a standard hormone therapy to see if it helps control the cancer.
Los Angeles, CaliforniaAges 18 years+ - NCT07711002RecruitingPhase 3
Saruparib with standard therapy for metastatic hormone-sensitive prostate cancer
This trial tests a new drug called saruparib, which may help keep prostate cancer from growing. It is for men whose cancer has spread and who have already received certain treatments. The study combines saruparib with a standard hormone therapy to see if it works better than the hormone therapy alone.
Beverly Hills, CaliforniaAges 18 years+ - NCT06422806RecruitingPhase 3
Immunotherapy plus chemo for aggressive sarcoma
This trial compares a combination of immunotherapy (pembrolizumab) plus chemotherapy (doxorubicin) versus chemotherapy alone for people with aggressive, poorly differentiated sarcomas that have spread or cannot be removed. The goal is to see if adding immunotherapy helps shrink tumors or slow their growth better than chemotherapy alone.
Dublin, CaliforniaAges 18 years+ - NCT06855277RecruitingPhase 3
AAA817 with hormone therapy for advanced prostate cancer
This trial tests a new combination treatment (AAA817 plus a hormone therapy) against standard care for men with advanced PSMA-positive prostate cancer that has spread and stopped responding to a previous hormone therapy. It may be an option if you haven't had certain prior treatments.
Orange, CaliforniaAges 18–100 - NCT07424833RecruitingPhase 1
Study of APG-3288 for Relapsed/Refractory Blood Cancers
This trial is testing a new drug called APG-3288 for people with certain relapsed or treatment-resistant blood cancers (like CLL/SLL, DLBCL, MCL, WM, MZL, or FL). You may qualify if you've tried at least 2 prior treatments and are looking for a new option.
Los Angeles, CaliforniaAges 18 years+ - NCT03961776Recruiting
MRI to monitor treatment response in rectal cancer
This trial tests whether an MRI scan done during chemoradiation can help doctors track how rectal cancer treatment is working. It may improve how they measure response early so treatment planning can be better tailored.
Los Angeles, CaliforniaAges 18 years+ - NCT05363657Recruiting
Registry study for kidney tumor treatment choices
This study is a registry that collects information on how people with localized kidney tumors are treated (either active treatment or watchful waiting). It may help doctors better understand which approaches work best for different patients.
Los Angeles, CaliforniaAges 18 years+ - NCT05423860Recruiting
HALO prostate study for men with early prostate cancer
This trial studies HALO, a new “human analytics” approach, in men with early-stage prostate cancer. It may help doctors better assess or guide care using MRI and biopsy findings, before or around initial treatment.
Indian Wells, CaliforniaAges 45–90 - NCT06002425Recruiting
AI guidance for stomach and colorectal cancer treatment
This study uses a computer program (like ChatGPT) to help doctors recommend the best treatments for people with stomach or colorectal cancer. All your care must happen at one of the study hospitals.
Duarte, CaliforniaAges 18 years+ - NCT03659448RecruitingPhase 3
Test drug that helps map colon and rectal cancer during surgery
This Phase 3 study tests SGM-101, a drug used during surgery to help doctors better outline primary, recurrent, and spread (metastatic) colorectal cancer. It may improve how completely tumors are identified and removed during an operation.
La Jolla, CaliforniaAges 18 years+ - NCT07795749RecruitingPhase 2
Intraperitoneal paclitaxel with systemic therapy for gastrointestinal cancer with peritoneal spread
This study tests a treatment that combines chemotherapy given directly into the abdomen (intraperitoneal) with standard systemic chemotherapy for people whose gastrointestinal cancer has spread to the lining of the abdomen (peritoneal carcinomatosis). It aims to control the cancer and improve how patients feel.
Orange, CaliforniaAges 18 years+ - NCT07758140Recruiting
At-home cervical cancer screening study
This study tests if women can collect their own samples at home to screen for cervical cancer, which could make screening easier and more comfortable. You would provide a sample and compare it to a standard doctor-collected sample.
Sherman Oaks, CaliforniaAges 25–65 - NCT04049214Recruiting
Mindfulness program during breast cancer surgery
This trial tests whether a structured mindfulness program before and after breast cancer surgery can reduce stress and improve how patients feel and cope. You may be offered mindfulness materials to use around the time of your operation.
Newport Beach, CaliforniaAges 18 years+ - NCT07690904Enrolling by invitation
Goals of care planning for veterans with cancer
This study uses a computer program to help veterans with cancer and their doctors talk about what matters most for their care. It aims to improve communication about treatment goals and quality of life.
Palo Alto, CaliforniaAges 18 years+ - NCT07690852Recruiting
Environmental exposures and breast cancer risk study
This study looks at how environmental exposures might affect breast cancer risk. It includes women at average risk, high risk, or those diagnosed with breast cancer before age 50, as well as healthcare providers.
Duarte, CaliforniaAges 18 years+ - NCT07677839Recruiting
Study using ultrasound to look at normal lymph nodes before breast surgery
This study uses a special type of ultrasound (UHFUS) to take detailed images of your lymph nodes before and during breast cancer surgery. The goal is to better understand normal lymph node anatomy, which may help prevent lymphedema (swelling) after surgery.
Sacramento, 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
- UCSF Medical Center · 3 studies
- Stanford University · 2 studies
- University of California, Irvine · 2 studies
- Alta Bates Summit Medical Center-Herrick Campus
- California Pacific Medical Center
- Cedars-Sinai Medical Center
- Children's Hospital of Los Angeles
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.