Clinical trials · California
Gastric Adenocarcinoma clinical trials in California
We’re tracking 36 recruiting gastric adenocarcinoma 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
- NCT06203600RecruitingPhase 2/Phase 3
Nivolumab plus standard treatment for advanced stomach or esophageal cancer
This trial tests whether adding the immunotherapy drug nivolumab to standard treatment works better for advanced stomach or esophageal cancer. It is for people whose cancer has already progressed after a first round of chemo plus immunotherapy.
Anaheim, 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+ - 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+ - 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+ - NCT07043400RecruitingPhase 3
Study comparing two ways to give tislelizumab plus chemo for stomach cancer
This trial compares a shot under the skin versus an IV infusion of tislelizumab, given along with chemotherapy, for people with advanced stomach or gastroesophageal junction cancer that has not been treated before. The goal is to see if the shot works as well as the IV and may be more convenient.
Los Alamitos, 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+ - 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+ - NCT07277413RecruitingPhase 1
Study of IDE892 for advanced solid tumors with MTAP deletion
This study tests a new drug called IDE892, alone or in combination, for people with advanced solid tumors that have a specific genetic change (MTAP deletion). The goal is to see if the drug is safe and whether it can shrink tumors.
Santa Rosa, CaliforniaAges 18 years+ - NCT07284186RecruitingPhase 1
Study of PLX-61639 for advanced SMARCA4-mutant solid tumors
This trial is testing a new drug called PLX-61639 for people with advanced solid tumors that have a specific SMARCA4 gene change. The drug aims to stop cancer growth by targeting the cells that lack this gene.
Orange, CaliforniaAges 18 years+ - NCT07544589RecruitingPhase 1
Testing DISP-10 for Advanced Gastrointestinal Cancers
This early-stage trial tests a new experimental therapy called DISP-10 in patients with advanced cancers of the stomach, esophagus, or colon that have spread. The goal is to see if this treatment can help shrink tumors and how safe it is.
Duarte, CaliforniaAges 18 years+ - NCT07221149RecruitingPhase 2/Phase 3
Pumitamig vs Nivolumab for untreated stomach or esophagus cancer
This trial compares two treatments for people with advanced stomach, gastroesophageal junction, or esophageal cancer that has not been treated before. One group gets pumitamig plus chemotherapy, the other gets nivolumab plus chemotherapy. The goal is to see which combination works better.
Los Angeles, CaliforniaAges 18 years+ - NCT06324357RecruitingPhase 1/Phase 2
Zongertinib for HER2-positive cancers that have spread
This trial tests a new pill called zongertinib, alone or with other drugs, for people with HER2-positive cancers (like breast, stomach, or colorectal cancer) that have spread and are no longer responding to standard treatments. The goal is to find the best dose and see if it can help shrink tumors or slow the disease.
Cerritos, CaliforniaAges 18 years+ - NCT06266299RecruitingPhase 1
Study of KK2269 for adults with solid tumors
This trial tests a new drug called KK2269 for adults with solid tumors that have spread or cannot be removed by surgery. It aims to see if the drug is safe and effective, possibly as a treatment option for certain cancers like lung or stomach cancer.
Duarte, CaliforniaAges 18 years+ - NCT07554521RecruitingPhase 2
Tislelizumab Plus Chemotherapy for Advanced Stomach or Esophageal Cancer
This study tests a combination of two drugs—tislelizumab (an immunotherapy) and chemotherapy—to treat advanced stomach, gastroesophageal junction, or esophageal cancer that cannot be surgically removed. The trial focuses on recruiting patients from racial and ethnic minority communities to ensure the treatment is studied in diverse populations.
Los Angeles, CaliforniaAges 18 years+ - NCT07431281RecruitingPhase 3
New drug combo for advanced stomach cancer with CLDN18.2
This trial tests a new drug combination for people with advanced stomach cancer that has not been treated before. It looks at two groups: one with PD-L1 (a protein that helps decide if immunotherapy works), and one without. The treatment includes an antibody-drug conjugate (Sonesitatug Vedotin) plus standard chemotherapy, with or without an immunotherapy drug.
Walnut Creek, CaliforniaAges 18 years+ - NCT07001748RecruitingPhase 2/Phase 3
Testing abdominal chemo plus standard chemo for stomach cancer spread
This trial tests adding the chemotherapy drug paclitaxel directly into the abdomen (intraperitoneal) along with standard IV chemotherapy for people with stomach or gastroesophageal junction cancer that has spread to the lining of the abdomen. The goal is to see if this combination helps control the cancer better than standard treatment alone.
Irvine, CaliforniaAges 18 years+ - NCT05365581RecruitingPhase 1
Study drug for stomach and pancreatic cancers with lab-checked targets
This Phase 1 trial tests ASP2138 alone or with other cancer medicines in adults with stomach (including GEJ) or pancreatic cancer. You may be eligible if your tumor has a specific protein marker and your health tests and scan results meet safety requirements.
Orange, CaliforniaAges 18 years+ - NCT05059444Recruiting
Blood test study to watch for cancer coming back
This study looks at whether blood tests can detect signs that cancer may return after curative-intent treatment. You would have blood drawn around your usual follow-up visits for up to 5 years, and your de-identified health data would be shared with study investigators.
Redwood City, CaliforniaAges 18 years+ - NCT05702229RecruitingPhase 2
Study of combined medicines for advanced stomach cancer with Claudin18.2
This Phase 2 study tests new combination treatments for advanced stomach or stomach-esophagus junction cancer that cannot be removed by surgery. It may help people whose tumors are positive for a marker called Claudin18.2, which the study uses to choose who can receive the treatment.
Los Angeles, 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+ - NCT05482893RecruitingPhase 1/Phase 2
Spevatamig for advanced stomach, pancreas, or bile duct cancer
This trial tests a new drug called Spevatamig (PT886), alone or with different chemotherapy and/or immunotherapy combinations, for people with certain advanced stomach, pancreatic, or bile duct cancers. The goal is to see if it shrinks tumors and is safe.
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+ - NCT06047379RecruitingPhase 1/Phase 2
Testing NEO212 for brain tumors and metastases
This trial tests a new drug called NEO212 for people with certain brain tumors (like astrocytoma or glioblastoma) or cancer that has spread to the brain from other parts of the body. The goal is to see if it is safe and if it can help shrink or control the tumors.
Beverly Hills, 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 Adenocarcinoma trials by city in California
Where these studies are running in California
Institutions with a site for the recruiting gastric adenocarcinoma studies listed above.
- City of Hope Comprehensive Cancer Center · 5 studies
- University of California, Irvine Medical Center / UC Irvine Health · 5 studies
- Research Site · 4 studies
- Cedars-Sinai Medical Center · 3 studies
- USC / Norris Comprehensive Cancer Center · 3 studies
- Hoag Memorial Hospital Presbyterian · 2 studies
- Kaiser Permanente Dublin · 2 studies
- Kaiser Permanente Fremont · 2 studies
What taking part in a gastric adenocarcinoma 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 Adenocarcinoma trials in other states
Common questions
- Are there gastric adenocarcinoma clinical trials in California?
- Yes. We're currently tracking 36 recruiting gastric adenocarcinoma 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 adenocarcinoma 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 adenocarcinoma 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 adenocarcinoma 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.