Clinical trials · California
Cancer clinical trials in California
We’re tracking 1,311 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
- NCT04633239RecruitingPhase 1
Testing abemaciclib plus olaparib for recurrent ovarian cancer
This Phase 1 trial studies whether adding abemaciclib to olaparib can treat women with recurrent platinum-resistant ovarian cancer. It aims to find a safe dose and see how well the combination can control the cancer.
Irvine, CaliforniaAges 18 years+ - NCT07287150RecruitingPhase 2
Inavolisib for metastatic castration-resistant prostate cancer
This trial tests a new drug called Inavolisib for men with a specific type of advanced prostate cancer that has stopped responding to hormone therapy. It aims to see if the drug can help slow the cancer's growth.
Los Angeles, CaliforniaAges 18 years+ - NCT07244341RecruitingPhase 1
Valemetostat and darolutamide for advanced prostate cancer
This trial tests a new combination of two drugs (valemetostat and darolutamide) for men with metastatic castration-resistant prostate cancer that has worsened after prior treatment. The goal is to see if the combination can slow cancer growth.
La Jolla, CaliforniaAges 18 years+ - NCT06531499RecruitingPhase 1
Study of a radioactive drug for advanced prostate cancer
This trial tests an extended treatment with a radioactive drug (177Lu-PSMA-617) to see how the body handles it, how safe it is, and how well it works. It is for men with metastatic castration-resistant prostate cancer who have not had chemotherapy yet.
Los Angeles, CaliforniaAges 18–100 - NCT06533644RecruitingPhase 2
SYNC-T therapy study for advanced prostate cancer
This trial tests a new treatment called SYNC-T Therapy (SV-102) for men with metastatic castration-resistant prostate cancer that has progressed after other treatments. The therapy is given directly into a tumor to help your immune system fight the cancer.
Sacramento, CaliforniaAges 18 years+ - NCT06809933Recruiting
Exercise and movement for gynecologic cancer patients
This study tests whether adding an exercise and activity tracking program can help patients with newly diagnosed gynecologic cancer feel better and handle treatment more easily. You'll wear a Fitbit and get guidance on movement while you go through chemotherapy or surgery.
San Francisco, CaliforniaAges 18 years+ - NCT06827613RecruitingPhase 1/Phase 2
Study of invikafusp alfa plus sacituzumab govitecan for advanced solid tumors
This trial tests a new drug combination for people with advanced breast cancer (triple-negative or hormone receptor-positive). The goal is to see if the combination helps shrink tumors or slow their growth.
Los Angeles, CaliforniaAges 18 years+ - NCT05677490RecruitingPhase 3
Chemo options, with or without nivolumab, for HER2-negative stomach cancer
This Phase 3 trial compares two standard chemotherapy regimens for advanced stomach, esophagus, or gastroesophageal junction cancer that is HER2-negative. It also tests whether adding nivolumab (an immune therapy) improves outcomes.
Antioch, CaliforniaAges 18 years+ - NCT05832086RecruitingPhase 2
Fasting-mimicking diet to improve prostate cancer and metabolism
This trial tests whether an intermittent, fasting-like diet can help control metastatic prostate cancer and improve metabolic health in men on hormone therapy. Participants follow a specific diet plan and are monitored by the study team.
Duarte, CaliforniaAges Any age - NCT06980077RecruitingPhase 2
Ivonescimab for advanced thymic carcinoma
This trial tests a new drug called ivonescimab for thymic carcinoma that has come back or isn't responding to other treatments. It aims to see if this drug can shrink the cancer and help you feel better.
San Francisco, CaliforniaAges 18 years+ - NCT06545955RecruitingPhase 3
Gene therapy study for high-grade bladder cancer not responding to BCG
This trial tests a gene therapy called nadofaragene firadenovec, given directly into the bladder, either alone or with chemo or immunotherapy. It's for people with high-grade bladder cancer that hasn't gone away after BCG treatment.
Los Angeles, CaliforniaAges 18 years+ - NCT04628767RecruitingPhase 2/Phase 3
Durvalumab plus chemo before surgery for upper tract cancer
This trial tests whether adding an immunotherapy drug (durvalumab) to chemotherapy before surgery can improve outcomes for people with high-grade upper tract urothelial cancer. It compares different treatment approaches based on whether a patient can receive cisplatin chemotherapy.
Auburn, CaliforniaAges 18 years+ - NCT06710288RecruitingPhase 2
Immune cell therapy plus chemo for platinum-resistant ovarian cancer
This trial tests a new combination therapy for advanced ovarian cancer that has stopped responding to platinum-based chemo. You will receive your own immune cells (M-CENK) boosted with an immune stimulator (N-803) plus chemotherapy (gemcitabine) to see if this helps fight the cancer.
El Segundo, CaliforniaAges 18–85 - NCT07491497RecruitingPhase 1/Phase 2
Study of TRI-611 for ALK-positive lung cancer
This trial tests a new investigational drug called TRI-611 for people with ALK-positive non-small cell lung cancer. It is designed for people who have already tried other ALK-targeted medicines, especially lorlatinib, and whose cancer may have stopped responding to them.
San Francisco, CaliforniaAges 18 years+ - NCT06380751RecruitingPhase 3
New targeted therapy for BRCA/PALB2-mutated HR+ breast cancer
This trial tests a new combination of targeted therapies (saruparib plus camizestrant or hormone therapy) against standard treatments for people with a specific type of advanced breast cancer. It may be a good option if you have a BRCA1, BRCA2, or PALB2 gene mutation and have not yet had treatment for your advanced disease.
Fountain Valley, CaliforniaAges 18 years+ - NCT06203210RecruitingPhase 3
Study of a new drug for relapsed small cell lung cancer
This study tests a new drug, ifinatamab deruxtecan, against the doctor's choice of standard treatments for people with extensive-stage small cell lung cancer that has returned after initial platinum-based chemotherapy. The goal is to see if the new drug works better and if it might be a new option for you.
Fullerton, CaliforniaAges 18 years+ - NCT07111520RecruitingPhase 1/Phase 2
Combination treatment for advanced lung cancer
This trial tests two investigational drugs, BNT326 and BNT327, together in people with advanced non-small cell lung cancer (NSCLC) that has spread or can't be cured with local treatment. The goal is to see if the combination is safe and might help shrink tumors.
Los Angeles, CaliforniaAges 18 years+ - NCT05673148RecruitingPhase 3
Ablation treatment plus usual therapy for limited metastatic bowel cancer
This study tests whether adding “total ablation” (carefully destroying all visible small tumors using surgery, heat/cold treatment, and/or targeted radiation) to standard chemotherapy improves outcomes for people with limited spread of colorectal cancer. It may help by aiming to eliminate all known metastatic spots while you continue usual cancer treatment.
Beverly Hills, CaliforniaAges 18 years+ - NCT06952504RecruitingPhase 3
Comparing two drug combos for advanced endometrial cancer
This trial tests a new drug combination (sacituzumab tirumotecan plus pembrolizumab) against pembrolizumab alone for people with a specific type of advanced or recurrent endometrial cancer that has normal mismatch repair function. It aims to see which treatment works better.
Irvine, CaliforniaAges 18 years+ - 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+
Cancer trials by city in California
Where these studies are running in California
Institutions with a site for the recruiting cancer studies listed above.
- University of California, Irvine Medical Center / UC Irvine Health · 6 studies
- UC Irvine Health · 4 studies
- USC / Norris Comprehensive Cancer Center · 4 studies
- City of Hope Comprehensive Cancer Center · 3 studies
- Palo Alto Medical Foundation · 3 studies
- Palo Alto Medical Foundation - Sunnyvale · 3 studies
- University of California, Los Angeles (UCLA) · 3 studies
- Alta Bates Summit Medical Center · 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 1,311 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.