Clinical trials · California
Oncology clinical trials in California
We’re tracking 134 recruiting oncology 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
- NCT05382338RecruitingPhase 3
Sodium thiosulfate to protect hearing in medulloblastoma
This Phase 3 study tests whether adding sodium thiosulfate during treatment for newly diagnosed medulloblastoma can reduce the risk of hearing loss. It is designed for children and teens whose cancer meets specific low-risk or average-risk tumor and lab features.
Loma Linda, CaliforniaAges 4–21 - NCT03959085RecruitingPhase 3
Inotuzumab plus chemotherapy for high-risk childhood leukemia
This Phase 3 trial tests whether adding inotuzumab to standard post-induction chemotherapy improves outcomes for children and young teens with high-risk B-ALL, mixed phenotype acute leukemia (MPAL), or certain high-risk B-LLy. It may help by targeting leukemia cells more directly, but participation depends on specific age, lab results, and medical history rules.
Downey, CaliforniaAges 12 months–25 years - NCT06368817RecruitingPhase 2
Lower radiation dose for children with CNS germinoma
This trial will see if giving a lower dose of radiation therapy can still effectively treat children and young adults with a type of brain tumor called germinoma. The goal is to reduce side effects while keeping the cancer under control.
Loma Linda, CaliforniaAges 3–29 - NCT03067181RecruitingPhase 3
Active surveillance and chemotherapy for germ cell tumors
This study looks at how to manage germ cell tumors in children and young adults using careful monitoring for some patients and chemotherapy for others. It aims to see whether these approaches can control the cancer while avoiding unnecessary treatment when possible.
Anaheim, CaliforniaAges Any age - NCT03118986RecruitingPhase 2
Olanzapine to prevent nausea during chemo in children
This study tests whether adding olanzapine can better control nausea (CIV) in children getting very nausea-causing chemotherapy or transplant treatment. It may help reduce severe nausea and vomiting while they’re in the hospital.
San Francisco, CaliforniaAges 2.5 years–18 years - NCT03126916RecruitingPhase 3
Testing added therapy for high-risk neuroblastoma in children
This Phase 3 study tests whether adding either a targeted drug (lorlatinib) or a radioactive treatment (131I-MIBG) to intensive chemotherapy improves outcomes for children with high-risk neuroblastoma. It may help by aiming at tumor cells more directly alongside standard treatment.
Downey, CaliforniaAges 12 months–30 years - NCT03180268RecruitingPhase 3
Watch or radiate after surgery for grade II meningioma
This trial studies whether people with a grade II meningioma that has been completely removed by surgery should be monitored only or treated with radiation. It may help reduce the risk of the tumor coming back while balancing radiation side effects.
Dublin, CaliforniaAges 18 years+ - NCT03452774Recruiting
AI matches your cancer tests to possible treatment trials
This trial uses an AI system to help match people with certain cancer types and specific tumor test results (like gene or protein markers) to relevant clinical trials. It may help you and your doctor find studies that fit your cancer biology faster.
Duarte, CaliforniaAges Any age - NCT03556228RecruitingPhase 1/Phase 2
Tested medicine for tumors with TrkA changes, alone or with pembrolizumab
This early-phase study tests VMD-928, a targeted cancer medicine, for cancers that have TrkA-related tumor changes. It may be given by itself or with pembrolizumab to see if it can shrink tumors when standard treatments have not worked.
Santa Rosa, CaliforniaAges 18–80 - NCT03886311RecruitingPhase 2
Talimogene, nivolumab, and trabectedin for advanced sarcoma
This Phase 2 study tests a combination treatment for locally advanced or metastatic sarcoma that cannot be fully removed by surgery. It aims to shrink tumors and control disease by combining an injected cancer-killing medicine with two cancer-fighting drugs.
Santa Monica, CaliforniaAges 18 years+ - NCT07581184RecruitingPhase 1
Targeted Radioactive Therapy for Advanced Prostate Cancer
This Phase 1 trial tests a new radioactive treatment called [225Ac]Ac-AKY-2519 in men with advanced prostate cancer that has spread and stopped responding to hormone therapy. The drug carries radioactivity directly to cancer cells to try to shrink tumors and slow disease progression.
Irvine, CaliforniaAges 18 years+ - NCT04243785RecruitingPhase 1
Testing BTX-A51 for hard-to-treat AML or high-risk MDS
This Phase 1 study tests BTX-A51 in adults with relapsed or refractory acute myeloid leukemia (AML) or high-risk myelodysplastic syndrome (MDS). It’s designed to see if the treatment can be given safely and to learn how it works in people whose standard treatments have not helped or are no longer an option.
Duarte, CaliforniaAges 18 years+ - NCT04256317RecruitingPhase 2/Phase 3
Azacitidine pills with or without venetoclax for certain blood cancers
This study tests whether a pill form of azacitidine (ASTX030) helps people with myelodysplastic syndromes (MDS), CMML, or AML. Some groups may also receive venetoclax; the goal is better blood cancer control for people who aren’t good candidates for intensive chemotherapy.
Los Angeles, CaliforniaAges 18 years+ - NCT04293562RecruitingPhase 3
Testing targeted drugs plus chemo for newly diagnosed AML
This study compares standard chemotherapy to chemotherapy plus CPX-351 and/or gilteritinib in children and young adults newly diagnosed with AML. It aims to see whether adding these targeted treatments improves outcomes, especially for certain gene changes like FLT3.
Downey, CaliforniaAges Up to 21 years - NCT04322318RecruitingPhase 2
Study of combination chemotherapy for Wilms tumor in children
This Phase 2 trial tests combination chemotherapy for children with certain types of Wilms tumor—either newly diagnosed diffuse anaplastic Wilms tumor or favorable Wilms tumor that has come back. The goal is to see how well the treatment controls the tumor and is tolerable for children.
San Francisco, CaliforniaAges Up to 30 years - NCT04333537RecruitingPhase 2/Phase 3
Sentinel node biopsy versus standard neck surgery for early mouth cancer
This trial compares two ways of checking whether early oral cavity squamous cell cancer has spread to neck lymph nodes. It tests whether sentinel lymph node biopsy can find spread as well as standard neck dissection, while potentially reducing more extensive surgery for some people.
San Francisco, CaliforniaAges 18 years+ - NCT04535271RecruitingPhase 2
Trabectedin, gemcitabine, and dacarbazine for advanced leiomyosarcoma
This Phase 2 study tests a combination of three anti-cancer medicines to shrink or control leiomyosarcoma that cannot be fully removed by surgery or has spread. It may help people whose cancer has grown after prior treatment.
Santa Monica, CaliforniaAges 18 years+ - NCT04535713RecruitingPhase 2
Testing chemotherapy plus immunotherapy for advanced sarcoma
This study tests a combination of chemo medicines (gemcitabine, doxorubicin, docetaxel) plus an immunotherapy drug (nivolumab) for advanced sarcoma that can’t be removed with surgery. It may help shrink tumors and slow disease growth in people whose cancer has already been treated and is measurable on scans.
Santa Monica, CaliforniaAges 18 years+ - NCT04684368RecruitingPhase 2
New treatment study for children and young adults with NGGCT brain tumors
This Phase 2 study tests a new treatment approach for certain brain tumors called NGGCT in children and young adults. It may help improve outcomes by targeting tumors in specific brain locations and using tumor marker tests to guide care.
San Francisco, CaliforniaAges 3–29 - NCT04726241RecruitingPhase 1/Phase 2
Testing blood and bone marrow samples in young leukemia patients
This trial looks at blood and bone marrow samples from children and teens whose leukemia has come back or is hard to treat. The goal is to better understand the disease and guide future options for these patients.
Downey, CaliforniaAges Up to 22 years - NCT04851119RecruitingPhase 1/Phase 2
Tegavivint for kids and young adults with hard-to-treat solid tumors
This early-phase study tests tegavivint to see how well it works and how safe it is for children and young adults with solid cancers that have come back or are not responding. It may be an option if your tumor type (including certain lymphomas or desmoid tumors) matches the study’s rules.
San Francisco, CaliforniaAges 1–30 - NCT04852887RecruitingPhase 3
Testing shorter breast radiation after low-risk hormone breast cancer
This Phase 3 trial studies whether “less intense” radiation can work as well as standard radiation for certain early-stage hormone receptor–positive, HER2-negative breast cancers that have a low Oncotype DX score. It may help reduce treatment burden while keeping cancer control strong.
Orange, CaliforniaAges 50–70 - NCT04870944RecruitingPhase 1/Phase 2
CBL0137 for children with advanced solid or brain tumors
This early-phase study tests CBL0137 in children and teens whose cancer has come back or is not responding to treatment. It is also for some specific hard-to-treat brain tumors, to see if the drug is safe and can work against the cancer.
San Francisco, CaliforniaAges 1–21 - NCT05055609RecruitingPhase 1
Study drug TRE-515 for advanced solid tumors using PET scans
This Phase 1 trial tests how safe TRE-515 is, what dose can be used, and how the drug moves through the body, including using PET scans. It’s for adults with advanced solid cancers that have stopped responding to standard treatment.
Santa Monica, CaliforniaAges 18 years+
Oncology trials by city in California
Where these studies are running in California
Institutions with a site for the recruiting oncology studies listed above.
- University of California, San Francisco · 12 studies
- Children's Hospital Los Angeles · 11 studies
- Children's Hospital of Orange County · 11 studies
- Kaiser Permanente-Oakland · 10 studies
- Loma Linda University Medical Center · 9 studies
- Lucile Packard Children's Hospital at Stanford · 9 studies
- Rady Children's Hospital San Diego · 9 studies
- University of California Davis Comprehensive Cancer Center · 8 studies
What taking part in a oncology 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.
Oncology trials in other states
Common questions
- Are there oncology clinical trials in California?
- Yes. We're currently tracking 134 recruiting oncology 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 oncology 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 oncology 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 oncology 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.