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 3 and Phase 4 studies, each written for real people, not researchers.
Recruiting studies in California
- NCT06797635RecruitingPhase 2
Study of Patritumab Deruxtecan and Pembrolizumab for High-Risk Early Breast Cancer
This trial tests a combination of targeted therapies (patritumab deruxtecan plus pembrolizumab) along with other anticancer drugs for people with a high-risk type of early-stage breast cancer that is either triple-negative or has very low hormone receptors and is HER2-negative. The goal is to see if this approach can help prevent the cancer from coming back.
Santa Monica, CaliforniaAges 18 years+ - NCT06807437RecruitingPhase 3
Testing lanreotide before pancreas surgery to prevent leaks
This trial tests if a medicine called lanreotide, given before surgery, can prevent a common complication (pancreatic leak) after removing part of the pancreas. It is for people with pancreatic cancer or a growth that could become cancer who are scheduled for a specific type of pancreas surgery.
San Diego, CaliforniaAges 18 years+ - NCT06815003RecruitingPhase 2
Preventing Graft-Versus-Host Disease After Stem Cell Transplant
This trial tests a combination of three drugs (vedolizumab, cyclophosphamide, and tacrolimus) to prevent graft-versus-host disease, a common complication after a donor stem cell transplant. It is for people with certain blood cancers who are getting a reduced-intensity transplant.
Duarte, CaliforniaAges 18–80 - NCT06817889RecruitingPhase 2
Remdesivir for RSV in people with weak immune systems
This trial tests if remdesivir can safely treat RSV (a respiratory virus) in people with weakened immune systems, such as those who have had a stem cell or bone marrow transplant, CAR T-cell therapy, or are being treated for blood cancer. If you have a confirmed RSV infection in your nose or throat and are at moderate or high risk for complications, you may be able to join.
Duarte, CaliforniaAges 18 years+ - NCT06859424RecruitingPhase 2
Testing a new GVHD prevention method after donor stem cell transplant
This trial tests a new way to prevent graft-versus-host disease (a common side effect of stem cell transplant) using a drug called cyclophosphamide after transplant. It is for adults with certain blood cancers who need a transplant from a partially matched unrelated donor.
Palo Alto, CaliforniaAges 18–66 - NCT06884618RecruitingPhase 1
Study of RO7673396 for advanced solid tumors with RAS mutations
This trial tests a new drug, RO7673396, for people with advanced solid tumors that have a RAS mutation. The goal is to see if the drug is safe and works against the cancer.
Duarte, CaliforniaAges 18 years+ - NCT06906341RecruitingPhase 2
Relacorilant combo for gynecologic cancers
This trial tests a drug called relacorilant combined with different treatments for ovarian, fallopian tube, primary peritoneal, or endometrial cancers. It may help patients whose cancer has stopped responding to standard therapies.
Palo Alto, CaliforniaAges 18 years+ - NCT06910761RecruitingPhase 2
Radiation for cancer spread to brain lining
This trial tests whether a precise type of radiation to the brain and spine (craniospinal irradiation) can help control cancer that has spread to the lining of the brain and spinal cord (leptomeningeal disease) in people with breast cancer or non-small cell lung cancer. The goal is to improve symptoms and slow disease progression.
Irvine, CaliforniaAges 18 years+ - NCT06966453RecruitingPhase 1/Phase 2
Study of disitamab vedotin for HER2-positive advanced breast cancer
This study tests a new drug called disitamab vedotin for people with advanced breast cancer that has a certain amount of HER2 protein. Depending on your HER2 and hormone receptor status, you may be eligible for one of three groups, each with different prior treatment requirements.
Anaheim, CaliforniaAges 18 years+ - NCT07218926RecruitingPhase 3
New drug vs sunitinib for GIST after imatinib
This trial compares a new oral drug, IDRX-42, with the standard drug sunitinib (Sutent) for people with advanced GIST whose cancer has progressed after imatinib therapy. The goal is to see if IDRX-42 can better control the tumor growth.
Los Angeles, CaliforniaAges 18 years+ - NCT07091617Recruiting
Better genetic testing for young adults with cancer
This study tests a new way to offer genetic testing to young adults (ages 18-39) who have or had cancer. The goal is to make it easier for you to learn if you have inherited gene changes that could affect your cancer and your family's health.
Arroyo Grande, CaliforniaAges 18 years+ - NCT07059884Recruiting
Exercise program to help people with cancer stay active
This trial tests a distance-based exercise program designed to help people on chemotherapy maintain their physical function and prevent disability. It is for patients with certain cancers who are working full-time and can participate in moderate physical activity.
Dublin, CaliforniaAges 18 years+ - NCT05376878RecruitingPhase 4
PET/MRI scan to guide treatment in HER2+ brain metastatic breast cancer
This trial tests a special PET/MRI imaging scan using a labeled drug to help doctors evaluate HER2+ breast cancer that has spread to the brain. It focuses on patients who plan to receive fam-trastuzumab deruxtecan, a targeted cancer medicine, and aims to see how well the scan can support treatment decisions.
Duarte, CaliforniaAges 18 years+ - NCT04804644RecruitingPhase 3
Memory-sparing radiation for brain metastases in small cell lung cancer
This study tests whether focusing high-dose radiation only on brain tumor spots, while avoiding the hippocampus (a brain area important for memory), helps protect memory and thinking compared with standard whole-brain radiation. It’s for people with small cell lung cancer that has spread to the brain.
Anaheim, CaliforniaAges 18 years+ - NCT00568490Recruiting
Finding blood markers that show low oxygen in tumors
This study looks for substances in blood that may reflect how “low-oxygen” a tumor is. If you have head and neck cancer or non-small cell lung cancer, it may help researchers understand tumor oxygen levels and improve future care.
Stanford, CaliforniaAges 18 years+ - NCT01042379RecruitingPhase 2
Adaptive drug trial for newly diagnosed breast cancer
This study tests personalized, changing treatment plans (given before surgery) to find better options for your specific breast tumor. You may be asked for extra breast-tissue testing to help match you with the most suitable study drug(s).
San Francisco, CaliforniaAges 18 years+ - NCT00349830Recruiting
Blood marker test to track response to cancer treatment
This study looks for new blood (serum) markers that may show whether anti-cancer therapy is working. If you have cancer or possible cancer and can safely take part, your blood may be used to monitor treatment response over time.
Stanford, CaliforniaAges 18 years+ - NCT00843375Recruiting
Testing stool samples to find early colon cancer and polyps
This study checks stool samples to see how well stool tests can detect early colon cancer and precancerous growths called adenomas. If you qualify, you’ll collect stool samples for a lab test (FIT) and sometimes this helps sort who should get follow-up testing.
Los Angeles, CaliforniaAges 18 years+ - NCT00477100Recruiting
Breast cancer tissue and data registry for research
This trial helps create a research “tissue registry” by collecting breast cancer tissue samples and medical information. It may help doctors better understand inflammatory or invasive breast cancer and improve future studies.
La Jolla, CaliforniaAges 18 years+ - NCT00756665Recruiting
Study of careful monitoring for prostate cancer
This study follows people with early-stage prostate cancer who choose active surveillance instead of immediate treatment. It aims to see how monitoring with repeat prostate biopsies and follow-up works over time.
San Francisco, CaliforniaAges 21 years+ - NCT01790152Recruiting
Dexrazoxane study to monitor heart damage in cancer survivors
This study tests dexrazoxane (DRZ) to see how it affects blood and heart-related “biomarkers,” or measurable signs of heart damage, after cancer treatment. It mainly targets survivors who may be at risk for cardiomyopathy (heart muscle weakness) or related heart failure.
Palo Alto, CaliforniaAges Any age - NCT01255748Recruiting
Registry study tracking outcomes after radiation treatment
This registry study collects information from people who are planning to receive radiation therapy. The goal is to better understand treatment outcomes and help improve radiation care over time.
San Diego, CaliforniaAges Any age - NCT01766297RecruitingPhase 2
Proton radiation after lumpectomy for early breast cancer
This trial studies a type of radiation made with protons to treat only part of the breast after surgery (lumpectomy) for early-stage breast cancer. It may help control the cancer while aiming to reduce radiation to surrounding tissues.
San Diego, CaliforniaAges 50 years+ - NCT02285582Recruiting
Rare blood disorder registry for histiocytic conditions
This study is a registry that collects information about people diagnosed with rare histiocytic disorders. It helps doctors better understand these conditions over time and may improve future care.
Los Angeles, 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 · 10 studies
- Stanford University · 3 studies
- California Protons Cancer Therapy Center · 2 studies
- City of Hope Orange County Lennar Foundation Cancer Center · 2 studies
- Kaiser Permanente-Oakland · 2 studies
- University of California, San Francisco · 2 studies
- USC / Norris Comprehensive Cancer Center · 2 studies
- Valley Children's Hospital · 2 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.