Clinical trials · California
Cancer clinical trials in California
We’re tracking 1,309 recruiting cancer studies with a site in California — including Phase 1, Phase 1/Phase 2, Phase 2 and Phase 3 studies, each written for real people, not researchers.
Recruiting studies in California
- NCT06931340RecruitingPhase 3
Adding chemo to hormone therapy for advanced prostate cancer
This trial is for men with metastatic prostate cancer that has already spread beyond the pelvis. It tests whether adding a chemotherapy drug (docetaxel) to the usual hormone therapy plus apalutamide can help control the cancer better than hormone therapy alone.
Dublin, CaliforniaAges 18 years+ - NCT07594106RecruitingPhase 1/Phase 2
New immunotherapy for advanced prostate or kidney cancer
This trial tests new experimental drugs (REGN15505 and REGN4336) designed to target and attack cancer cells in advanced prostate cancer or kidney cancer. These drugs work by boosting your immune system to recognize and destroy cancer, and may be combined with other approved immunotherapy drugs.
Duarte, CaliforniaAges 18 years+ - NCT06790693RecruitingPhase 3
Inavolisib plus hormone therapy for advanced breast cancer
This trial tests a new targeted therapy, inavolisib, combined with standard hormone therapy and a CDK4/6 inhibitor for people with a specific genetic mutation (PIK3CA) in their hormone receptor-positive, HER2-negative advanced breast cancer that has not been treated before. It compares this combination to a placebo plus the same standard treatments.
Burbank, CaliforniaAges 18 years+ - NCT07215910RecruitingPhase 3
Testing vorasidenib with temozolomide after radiation for advanced brain cancer
This trial tests whether adding the targeted drug vorasidenib to standard chemotherapy (temozolomide) after radiation helps people with a specific type of advanced brain cancer called IDH-mutant astrocytoma. It is for patients who have not had previous treatments like chemotherapy or radiation and whose tumors have certain genetic features.
Duarte, CaliforniaAges 12 years+ - NCT07293247RecruitingPhase 2
Targeted radiation after lung cancer surgery
This trial tests if targeted radiation after surgery can help people with non-small cell lung cancer who still have cancer in their lymph nodes after chemotherapy. Participants will have had surgery and chemotherapy before starting radiation.
Los Angeles, CaliforniaAges 18 years+ - NCT06632977RecruitingPhase 2
Matching targeted treatments to your prostate cancer's genetics
This trial is testing whether matching your cancer's specific genetic changes to a targeted treatment can help control metastatic prostate cancer that has stopped responding to standard hormone therapy and chemotherapy. You may receive a drug, a radioactive treatment, or a combination based on your tumor's molecular profile.
Chico, CaliforniaAges 18 years+ - NCT07228832RecruitingPhase 3
Study of two drugs with chemo for advanced colorectal cancer
This clinical trial tests a new drug, ivonescimab, against an approved drug, bevacizumab. Both are given with standard chemotherapy (FOLFOX) for people with advanced colorectal cancer that has not been treated yet with chemo or other drugs.
Beverly Hills, CaliforniaAges 18 years+ - NCT07288177RecruitingPhase 2
A study of Rina-S for people with non-small cell lung cancer
This trial tests a new drug called Rina-S for people with non-small cell lung cancer that has spread or can't be removed by surgery. It aims to see if the drug can shrink tumors and how safe it is.
Fountain Valley, CaliforniaAges 18 years+ - NCT06748222RecruitingPhase 3
Online mindfulness program for breast cancer survivors
This trial tests a 6-week online mindfulness program to help breast cancer survivors manage mild to moderate depression. You may qualify if you finished active treatment within the last 5 years and can use a digital device.
Anaheim, CaliforniaAges 18–50 - NCT05879926RecruitingPhase 3
Testing chemo after hormone therapy in premenopausal early breast cancer
This Phase 3 trial checks whether adding chemotherapy after standard hormone-blocking treatment works better for some premenopausal women with early-stage, ER-positive, HER2-negative breast cancer. It targets patients with limited lymph node spread and a lower-to-intermediate tumor “recurrence” risk score.
Anaheim, CaliforniaAges 18–60 - NCT07680439RecruitingPhase 2
CAR T cell therapy study for children with DIPG brain tumor
This trial tests a new CAR T cell therapy (BCB-276) for children and young adults with a type of brain tumor called DIPG. The therapy uses your own immune cells that are specially trained to attack the cancer.
Los Angeles, CaliforniaAges 1–26 - NCT06128551RecruitingPhase 1/Phase 2
Testing two targeted drugs for KRAS G12C advanced cancer
This study tests two oral medicines (elironrasib and daraxonrasib) given alone or together to see if they can shrink tumors or slow down cancer growth in people with advanced solid tumors that have a KRAS G12C mutation. It is for people who have already tried other treatments.
Duarte, CaliforniaAges 18 years+ - NCT07397338RecruitingPhase 1/Phase 2
RAS inhibitors with ivonescimab for solid tumors
This trial tests new drugs called RAS(ON) inhibitors combined with ivonescimab for people with solid tumors that have a RAS mutation. It aims to see if this combination can shrink tumors or slow their growth.
Los Angeles, CaliforniaAges 18 years+ - NCT07300241RecruitingPhase 1
Study of NEO-811 for advanced kidney cancer
This trial tests a new drug called NEO-811 for people with advanced clear cell kidney cancer that has spread and can't be removed with surgery. The goal is to see if it helps when other treatments have stopped working or aren't an option.
Duarte, CaliforniaAges 18 years+ - NCT04812366RecruitingPhase 2
Genetic test-guided treatment before prostate surgery
This trial tests different drugs before prostate surgery based on a person's genetic profile. It aims to find better treatments for high-risk prostate cancer that hasn't spread yet.
Sacramento, CaliforniaAges 18 years+ - NCT06613100RecruitingPhase 1
Xaluritamig before prostate surgery for high-risk prostate cancer
This study tests an experimental drug called xaluritamig given before surgery for men with localized prostate cancer that is intermediate or high risk. The goal is to see if it can help shrink the cancer before the prostate is removed.
San Francisco, CaliforniaAges 18 years+ - NCT05751434RecruitingPhase 2
Exercise therapy for prostate cancer patients on active surveillance
This trial tests whether an exercise program can help men with early-stage prostate cancer who are being monitored instead of treated. If you are not very active now, you may be able to join a structured exercise plan to see if it improves your health and cancer signs.
Durate, CaliforniaAges 18 years+ - NCT06252649RecruitingPhase 3
Study of new drug combo for KRAS G12C colorectal cancer
This trial tests a new combination of drugs (sotorasib, panitumumab, and FOLFIRI) against the standard treatment for colorectal cancer that has spread. It's for people whose tumor has a specific KRAS G12C mutation and who have not had chemotherapy before for advanced disease.
Fullerton, CaliforniaAges 18 years+ - NCT04831580Recruiting
Robotic vs open hysterectomy for early cervix cancer
This trial compares robotic surgery to open (traditional) surgery for women with early-stage cervix cancer. The goal is to see which approach is safer and works better for cancer control and recovery.
Duarte, CaliforniaAges 18 years+ - NCT07044336RecruitingPhase 3
Comparing a new drug to chemo for advanced endometrial cancer
This trial tests a new investigational drug called Puxitatug Samrotecan (AZD8205) against standard chemotherapy in people whose endometrial cancer has come back or spread after prior treatment with platinum chemo and an immunotherapy. The goal is to see if the new drug works better.
La Jolla, CaliforniaAges 18 years+ - NCT06427941RecruitingPhase 1
Study of BGB-B2033 drug for advanced solid tumors
This trial tests a new drug, BGB-B2033, alone or with other treatments, for people with advanced liver, stomach, lung, or germ cell cancers that have not responded to standard therapy. The goal is to see if the drug is safe and works against these tumors.
Duarte, CaliforniaAges 18 years+ - NCT05503797RecruitingPhase 2
Study of FORE8394 for cancers with BRAF changes
This trial tests a new drug, FORE8394, for people whose cancers have a change in the BRAF gene. It may be an option if you have a solid tumor or brain tumor that has not responded to other treatments.
Beverly Hills, CaliforniaAges 8 years+ - NCT07444541RecruitingPhase 1/Phase 2
Study of ANO31905 plus chemo for CLDN18.2-positive pancreatic cancer
This trial tests a new drug called ANO31905 added to standard chemotherapy for people with advanced pancreatic cancer that has a specific protein called CLDN18.2 on its cells. The study aims to see if the combination works better than chemo alone.
Los Angeles, CaliforniaAges 18 years+ - NCT06568939RecruitingPhase 2
Study of telisotuzumab vedotin for non-squamous lung cancer
This trial tests a drug called telisotuzumab vedotin (ABBV-399) given through a vein to people with a specific type of advanced lung cancer (non-squamous non-small cell lung cancer) that has a high level of a protein called c-Met. The study aims to see how the drug affects the body and helps control the cancer.
Los Angeles, 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 Comprehensive Cancer Center · 6 studies
- University of California, Irvine Medical Center / UC Irvine Health · 5 studies
- UC Irvine Health · 4 studies
- USC / Norris Comprehensive Cancer Center · 4 studies
- City of Hope Orange County Lennar Foundation Cancer Center · 3 studies
- Eisenhower Medical Center · 3 studies
- Enloe Medical Center · 3 studies
- Kaiser Permanente Dublin · 3 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 1,309 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.