Clinical trials · California
Gastric Cancer clinical trials in California
We’re tracking 68 recruiting gastric cancer 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
- NCT04221893Recruiting
Radiation therapy for metastatic gastrointestinal cancers
This trial tests whether adding radiation therapy to your current immunotherapy can help control cancer that has spread in the digestive system. It aims to improve symptoms and possibly slow the cancer's growth.
San Francisco, CaliforniaAges 18 years+ - NCT05334069Recruiting
Blood test study for early cancer detection in patients
This study collects blood from people with cancer and people without cancer (or with possible cancer) to test whether new blood tests can detect cancer earlier. Your blood samples help researchers evaluate how well these tests work.
Arroyo Grande, CaliforniaAges 40–75 - NCT06901531RecruitingPhase 3
Study of zolbetuximab with pembrolizumab and chemo for gastric cancer
This trial tests a new combination of drugs (zolbetuximab, pembrolizumab, and chemotherapy) for people with advanced stomach or gastroesophageal junction cancer. It may be an option if your tumor has certain proteins (CLDN18.2 and PD-L1) and you haven't had chemotherapy for advanced disease.
Bakersfield, CaliforniaAges 18 years+ - NCT06974110RecruitingPhase 1
Study of a new drug for advanced solid tumors with MSI-H or dMMR
This trial tests an oral medication called MOMA-341 in people with advanced solid tumors that have high microsatellite instability (MSI-H) or mismatch repair deficiency (dMMR). It aims to see if the drug can help when prior immunotherapy hasn't worked or isn't available.
San Diego, CaliforniaAges 18 years+ - NCT06293898RecruitingPhase 1
Study of BL-M07D1 for HER2-positive solid tumors
This trial tests a new drug, BL-M07D1, for people with advanced solid tumors that have a protein called HER2. It is for patients who have already tried at least two other standard treatments.
Duarte, CaliforniaAges 18 years+ - NCT04329494RecruitingPhase 1
Study of targeted drug delivery into the abdomen using PIPAC
This Phase 1 trial tests PIPAC, a way to deliver anti-cancer medicine directly into the abdomen using a minimally invasive procedure. It is for people with peritoneal spread from certain cancers to see whether this approach is safe and potentially helpful.
Duarte, CaliforniaAges 18 years+ - NCT06038578RecruitingPhase 2
TRK-950 with standard chemo for advanced stomach cancer
This trial tests a new drug, TRK-950, added to standard chemotherapy (ramucirumab and paclitaxel) for people with advanced stomach or gastroesophageal junction cancer that has worsened after previous treatment. The goal is to see if this combination can help shrink tumors or slow disease progression.
Irvine, CaliforniaAges 18 years+ - NCT06242470RecruitingPhase 1
Study of MGC026 for advanced solid tumors
This trial tests a new drug called MGC026 that targets a protein called B7-H3 on cancer cells, aiming to shrink or slow different advanced solid tumors. It is an early-phase study to find the right dose and check safety.
Los Angeles, CaliforniaAges 18 years+ - NCT06298916RecruitingPhase 1/Phase 2
Study of 64Cu-LNTH-1363S in Sarcoma or GI Cancer
This trial tests a new imaging agent, 64Cu-LNTH-1363S, to see if it can find certain sarcomas and gastrointestinal cancers. The goal is to help doctors better see where your cancer is and plan the best treatment. You may be eligible if you have a sarcoma or a GI cancer and are willing to have a tumor tissue sample taken.
Orange, CaliforniaAges 15 years+ - NCT06532006RecruitingPhase 3
HLX22 plus trastuzumab and chemo for HER2+ stomach cancer
This trial tests adding a new drug, HLX22, to the standard combination of trastuzumab and chemotherapy for people with HER2-positive stomach or gastroesophageal junction cancer that hasn't been treated yet. The goal is to see if this three-drug mix works better than the usual two-drug approach.
Anaheim, CaliforniaAges 18 years+ - NCT06586957RecruitingPhase 1
Study of NKT3964 for advanced solid tumors
This trial is testing an experimental oral drug called NKT3964 for people with advanced solid tumors that have stopped responding to standard treatments. The drug works by blocking a protein called CDK2, which some cancers need to grow.
San Francisco, CaliforniaAges 18 years+ - NCT06789172RecruitingPhase 1
New drug OKN4395 with or without pembrolizumab for solid tumors
This trial tests a new oral drug called OKN4395, which targets a COX2-related immune pathway, alone or with the immunotherapy pembrolizumab, in people with advanced solid tumors. It may be an option if you have certain types of cancer that have stopped responding to other treatments.
Santa Monica, 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+ - NCT01514045Recruiting
Gastric cancer registry for patients and certain family members
This study builds a registry (a secure database) to learn about people with gastric cancer, people at higher risk because of family history, and people with a specific inherited gene change. Being in the registry may help researchers understand causes and improve future care.
Stanford, CaliforniaAges 18 years+ - NCT07217704RecruitingPhase 3
New PET scan to find stomach or esophageal cancer spread
This trial tests a new PET scan drug (18F-FAPI) to see if it can better detect where stomach or esophageal cancer has spread. It may help doctors plan the right treatment for you.
Cerritos, CaliforniaAges 18 years+ - NCT07432295RecruitingPhase 2
Givastomig plus nivolumab and chemo for advanced stomach cancer
This trial tests a new drug, givastomig, combined with standard immunotherapy (nivolumab) and chemotherapy for people with advanced stomach, gastroesophageal junction, or esophageal cancer. It is for people whose tumors have certain markers (CLDN18.2 and PD-L1) and who have not had treatment for advanced disease.
Duarte, CaliforniaAges 18 years+ - NCT07587229Recruiting
Predicting chemotherapy response in gastric cancer
This research study analyzes tumor tissue samples to understand why some patients respond better to chemotherapy after gastric cancer surgery. By studying how genes are processed in cancer cells, researchers hope to predict which patients will benefit most from treatment.
Duarte, CaliforniaAges 18 years+ - NCT07227168RecruitingPhase 1
Study of STRO-004 for advanced solid tumors
This trial tests a new drug called STRO-004 for people with advanced solid tumors (cancers that have spread or come back). It aims to see if the drug is safe and effective for those who have already tried other treatments.
San Diego, CaliforniaAges 18 years+ - NCT06943521RecruitingPhase 1/Phase 2
Study of MT-4561 for advanced solid tumors
This trial tests a new drug called MT-4561 in people with advanced solid tumors that have not responded to prior treatments. It aims to see if the drug can help shrink tumors or slow their growth.
Los Angeles, CaliforniaAges 18 years+ - NCT06580002RecruitingPhase 2
Can Riluzole Help with Chemo Brain? A Pilot Study
This study tests if a medicine called riluzole (currently used for ALS) can help with 'chemo brain' – memory and thinking problems after cancer treatment. It is for people who feel their mental sharpness has declined after breast cancer therapy, certain chemotherapies, or brain radiation.
Orange, CaliforniaAges 18 years+ - NCT07124351RecruitingPhase 4
Using a special dye to see cancer during surgery
This trial tests a drug called pafolacianine (CYTALUX) that makes cancer cells glow during surgery. It may help doctors see and remove more cancer from the stomach, esophagus, or appendix. You take the drug before surgery, and a special camera shows the glowing cancer.
Los Angeles, CaliforniaAges 18 years+ - NCT06172478RecruitingPhase 2
HER3-DXd for advanced solid tumors after prior treatment
This trial tests a new targeted drug called HER3-DXd for people with several types of advanced solid tumors that have stopped responding to standard treatments. The drug is an antibody-drug conjugate, designed to deliver chemotherapy directly to cancer cells that have a protein called HER3 on their surface.
Duarte, CaliforniaAges 18 years+ - NCT06764875RecruitingPhase 3
New drug combo for HER2-positive stomach cancer
This trial tests a new immunotherapy called rilvegostomig combined with standard chemotherapy and a targeted therapy (trastuzumab deruxtecan) for people with advanced HER2-positive stomach or gastroesophageal junction cancer that has not been treated before.
Upland, CaliforniaAges 18 years+ - NCT03175224RecruitingPhase 2
Test drug APL-101 for lung or other tumors with MET changes
This Phase 2 study tests APL-101 to shrink advanced cancers that have certain MET-related changes, including specific MET mutations, MET gene amplification, or MET fusions. It may help people whose tumors have run out of standard treatment options.
Los Angeles, CaliforniaAges 18 years+
Gastric Cancer trials by city in California
Where these studies are running in California
Institutions with a site for the recruiting gastric cancer studies listed above.
- City of Hope Comprehensive Cancer Center · 7 studies
- Cedars-Sinai Medical Center · 3 studies
- John Muir Health · 2 studies
- Stanford University · 2 studies
- The Angeles Clinic and Research Institute · 2 studies
- University of California, Irvine Medical Center / UC Irvine Health · 2 studies
- University of California, Los Angeles (UCLA) · 2 studies
- AIS Cancer Center at San Joaquin Community Hospital
What taking part in a gastric 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.
Gastric Cancer trials in other states
Common questions
- Are there gastric cancer clinical trials in California?
- Yes. We're currently tracking 68 recruiting gastric 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 gastric 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 gastric 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 gastric 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.