Clinical trials · California
Neoplasms clinical trials in California
We’re tracking 248 recruiting neoplasms 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
- NCT05999994RecruitingPhase 2
Testing new drugs for children and young adults with cancer
This trial tests several experimental drugs for children and young adults with cancer. It aims to find safe and effective treatments by matching participants to one of several drug studies based on their cancer type and health.
Los Angeles, CaliforniaAges 1–39 - NCT02555735Enrolling by invitation
Study of exceptional responders with solid tumors on chemotherapy
This study looks at people with solid tumor cancer (like many common carcinomas) to understand who responds exceptionally well to chemotherapy. You might be eligible if you are newly diagnosed or already receiving chemotherapy and can follow the study plan.
Los Angeles, CaliforniaAges 18 years+ - NCT07566156RecruitingPhase 3
New drug combination vs. radiation for bladder cancer preservation
This trial tests whether two drugs (enfortumab vedotin and pembrolizumab) work better than radiation with chemotherapy for muscle-invasive bladder cancer. The goal is to treat your cancer while keeping your bladder instead of removing it.
Santa Barbara, CaliforniaAges 18 years+ - NCT06675136RecruitingPhase 1
Nab-paclitaxel PIPAC with paclitaxel and ramucirumab for stomach cancer spread to belly lining
This trial tests a new way to deliver chemotherapy directly into the belly for stomach cancer that has spread to the lining of the abdomen (peritoneal metastases). It also combines two standard chemotherapy drugs. The goal is to see if this approach can help people whose cancer progressed after first treatment.
Duarte, CaliforniaAges 18 years+ - NCT06327685RecruitingPhase 1
Avapritinib and Decitabine for SM-AHN
This trial tests a combination of two drugs, avapritinib and decitabine, for people with systemic mastocytosis plus another blood cancer (SM-AHN). The goal is to see if the combination works better than either drug alone.
Palo Alto, CaliforniaAges 18 years+ - NCT05642611RecruitingPhase 3
Cooling and compression for nerve protection during chemotherapy
This study tests whether using cooling and/or compression on the arms or legs can prevent nerve damage that can happen from certain chemotherapy drugs. If you get eligible chemo soon, this may help lower the chance of painful numbness or tingling during treatment.
Martinez, CaliforniaAges 18 years+ - NCT05443425RecruitingPhase 1
Leflunomide plus steroids for acute graft-versus-host disease
This early-phase trial tests whether adding leflunomide to standard steroid treatment can better control acute graft-versus-host disease (aGvHD) after a stem cell transplant. It may help reduce the immune reaction that damages the body while keeping treatment safe and manageable.
Duarte, CaliforniaAges 18 years+ - NCT04871542Recruiting
Predicting risk of immune therapy side effects
This study tries to predict who is more likely to get serious side effects from immune checkpoint medicines used for solid tumors. You may help researchers by answering questionnaires before treatment and during follow-up, and by possibly storing sample specimens.
Antioch, CaliforniaAges 18 years+ - NCT06067347Recruiting
PETAL Consortium study on T-cell and NK-cell lymphoma
This study, run by Massachusetts General Hospital, is collecting information from people around the world who have certain types of T-cell or NK-cell lymphoma. It aims to learn more about these cancers and how they are managed.
Duarte, CaliforniaAges 18 years+ - NCT06587490RecruitingPhase 3
Radiation therapy for limited metastatic cancers
This trial tests whether adding focused, high-dose radiation (SABR) to standard drug therapy can better control cancer that has spread to a few spots in the body. It is for people starting or resuming cancer medicines for newly found or growing metastases.
La Jolla, CaliforniaAges 18 years+ - NCT07025538RecruitingPhase 1
Preventing chronic graft-versus-host disease with ruxolitinib
This trial tests whether the drug ruxolitinib, given based on a blood test that predicts risk, can prevent chronic graft-versus-host disease (cGVHD) after a stem cell transplant. It may help people who have a higher risk of developing this complication.
Duarte, CaliforniaAges 18 years+ - NCT07164443RecruitingPhase 3
Study comparing pasritamig to placebo for advanced prostate cancer
This trial tests a new drug called pasritamig against a placebo for people with advanced prostate cancer that has stopped responding to hormone therapy and chemotherapy. The goal is to see if pasritamig can help slow the cancer's growth.
La Jolla, CaliforniaAges 18 years+ - NCT06465069RecruitingPhase 1
Study of a new drug for advanced bladder and other solid tumors
This study tests a new drug (LY4052031) for people with several types of advanced solid tumors, especially bladder cancer. It aims to see if the drug is safe and effective when given alone or after other treatments have stopped working.
Duarte, CaliforniaAges 18 years+ - NCT07283939Recruiting
Testing a tool to adjust chemo doses and reduce treatment delays
This trial tests a computer algorithm called PAGODA that helps doctors adjust chemotherapy doses for people with gastrointestinal cancers. The goal is to prevent unplanned treatment delays while keeping the treatment effective.
Arroyo Grande, CaliforniaAges 18 years+ - NCT03866382RecruitingPhase 2
Immunotherapy plus a targeted drug for rare genitourinary tumors
This Phase 2 study tests whether nivolumab and ipilimumab (immunotherapy drugs) plus cabozantinib (a targeted anti-cancer drug) can shrink or control rare cancers of the urinary/reproductive system that have spread. It may help by boosting the immune system and blocking cancer growth signals at the same time.
Arroyo Grande, CaliforniaAges 18 years+ - NCT05285358RecruitingPhase 1
Aerosol chemo plus standard drugs for bile duct and gallbladder cancer
This trial tests a new way to give the drug paclitaxel directly into your belly as a mist, along with two standard chemo drugs given through your veins, for bile duct or gallbladder cancer that has spread to the lining of the belly. The goal is to see if this approach can better control the cancer in the belly.
Duarte, CaliforniaAges 18 years+ - NCT06885034RecruitingPhase 1/Phase 2
Testing a New Drug for Advanced Colon, Rectal, or Pancreatic Cancer
This study tests an experimental drug, alone or combined with other treatments, for advanced colon, rectal, or pancreatic cancer that hasn't responded to standard options or cannot be removed by surgery. The goal is to see if it is safe and if it helps shrink or slow the cancer.
Los Alamitos, CaliforniaAges 18 years+ - NCT07173751RecruitingPhase 3
Pumitamig for advanced triple-negative breast cancer
This study tests a new drug called pumitamig for people with a type of breast cancer that is triple-negative or has very low hormone receptors and has come back or spread. It aims to see if pumitamig works better than standard treatment and how safe it is for people who cannot get PD(L)-1 immunotherapy with chemo.
La Jolla, CaliforniaAges 18 years+ - NCT05554406RecruitingPhase 2
New drug therapy for high-risk AML
This trial is testing new drug combinations for people with newly diagnosed, high-risk AML who have not yet started treatment. It aims to find more effective therapies for this aggressive form of leukemia.
Berkeley, CaliforniaAges 18–59 - NCT07309445Recruiting
Real-world use of TAR-200 for non-muscle invasive bladder cancer
This study looks at how patients with non-muscle invasive bladder cancer are using TAR-200 in everyday medical care. It aims to understand treatment patterns and outcomes outside of a clinical trial.
Los Angeles, CaliforniaAges 18 years+ - NCT06662786RecruitingPhase 3
Amivantamab plus chemo vs. standard chemo for left-sided colorectal cancer
This trial compares a new combination (amivantamab plus chemotherapy) with the standard treatment (cetuximab plus chemotherapy) as the first therapy for people with left-sided colorectal cancer that has spread. The goal is to see which approach works better when the tumor has no mutations in the KRAS, NRAS, or BRAF genes.
Bakersfield, CaliforniaAges 18 years+ - NCT06919965RecruitingPhase 3
TAR-210 vs. standard bladder chemo for high-risk bladder cancer
This trial compares a new drug called TAR-210, given directly into the bladder, to standard chemotherapy for people with a specific type of high-risk bladder cancer that has not invaded muscle. It tests if TAR-210 can be more effective with fewer side effects.
Los Angeles, CaliforniaAges 18 years+ - NCT07225946RecruitingPhase 3
Study of pasritamig with docetaxel for advanced prostate cancer
This trial tests a new drug called pasritamig combined with the chemotherapy docetaxel, compared to docetaxel alone, in men with prostate cancer that has spread and is no longer responding to hormone therapy.
Fountain Valley, CaliforniaAges 18 years+ - NCT03435796RecruitingPhase 2/Phase 3
Follow-up for people treated with gene-modified T cells
This study is a long-term check-in for people who previously received gene-modified T-cell infusions in a related Celgene/Juno/BMS trial. It helps researchers track safety and long-term effects over time.
Duarte, CaliforniaAges Any age
Neoplasms trials by city in California
Where these studies are running in California
Institutions with a site for the recruiting neoplasms studies listed above.
- City of Hope Comprehensive Cancer Center · 7 studies
- University of California San Diego Health · 6 studies
- USC / Norris Comprehensive Cancer Center · 5 studies
- Cedars-Sinai Medical Center · 4 studies
- University of California, Los Angeles (UCLA) · 4 studies
- Contra Costa Regional Medical Center · 3 studies
- Mission Hope Medical Oncology - Arroyo Grande · 3 studies
- Mission Hope Medical Oncology - Santa Maria · 3 studies
What taking part in a neoplasms 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.
Neoplasms trials in other states
Common questions
- Are there neoplasms clinical trials in California?
- Yes. We're currently tracking 248 recruiting neoplasms 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 neoplasms 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 neoplasms 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 neoplasms 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.