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Stomach Cancer clinical trials in California

104 actively recruiting stomach cancer trials at 88 sites across California.

Data from ClinicalTrials.gov · last refreshed

Phase 3 Recruiting Academic/Other

mFOLFIRINOX Versus mFOLFOX With or Without Nivolumab for the Treatment of Advanced, Unresectable, or Metastatic HER2 Negative Esophageal, Gastroesophageal Junction, and Gastric Adenocarcinoma

This phase III trial compares the effect of modified fluorouracil, leucovorin calcium, oxaliplatin, and irinotecan (mFOLFIRINOX) to modified fluorouracil, leucovorin calcium, and oxaliplatin (mFOLFOX) for the treatment of advanced, unresec…

Sponsor: Alliance for Clinical Trials in Oncology
NCT ID: NCT05677490
Sites in California:
  • Kaiser Permanente-Deer Valley Medical Center — Antioch, California
  • Mission Hope Medical Oncology - Arroyo Grande — Arroyo Grande, California
  • PCR Oncology — Arroyo Grande, California
  • Sutter Auburn Faith Hospital — Auburn, California
  • Sutter Cancer Centers Radiation Oncology Services-Auburn — Auburn, California
Phase 2, Phase 3 Recruiting NIH

Adding Nivolumab to Usual Treatment for People With Advanced Stomach or Esophageal Cancer, PARAMUNE Trial

This phase II/III trial compares the addition of nivolumab to the usual treatment of paclitaxel and ramucirumab to paclitaxel and ramucirumab alone in treating patients with gastric or esophageal adenocarcinoma that may have spread from wh…

Sponsor: National Cancer Institute (NCI)
NCT ID: NCT06203600
Sites in California:
  • Kaiser Permanente-Anaheim — Anaheim, California
  • Kaiser Permanente-Baldwin Park — Baldwin Park, California
  • Kaiser Permanente-Bellflower — Bellflower, California
  • Kaiser Permanente Dublin — Dublin, California
  • Kaiser Permanente-Fontana — Fontana, California
Phase 3 Recruiting Industry

Sonesitatug Vedotin in Combination With Capecitabine With or Without Rilvegostomig in Participants With Advanced or Metastatic Gastric, Gastroesophageal Junction, or Esophageal Adenocarcinoma Expressing Claudin18.2

The purpose of this study is to evaluate the efficacy and safety of sonesitatug vedotin in combination with capecitabine with or without rilvegostomig in first-line (1L) Claudin18.2 (CLDN18.2)-positive, human epidermal growth factor recept…

Sponsor: AstraZeneca
NCT ID: NCT07431281
Sites in California:
  • Research Site — Duarte, California
  • Research Site — La Jolla, California
  • Research Site — Los Alamitos, California
  • Research Site — Orange, California
  • Research Site — Walnut Creek, California
Phase 3 Recruiting Industry

A Phase Ⅲ Study of Rilvegostomig in Combination With Fluoropyrimidine and Trastuzumab Deruxtecan as the First-line Treatment for HER2-positive Gastric Cancer

This is a Phase Ⅲ, randomized, open-label, Sponsor-blinded, 3-arm, global, multicenter study assessing the efficacy and safety of rilvegostomig in combination with fluoropyrimidine and T-DXd (Arm A) compared to trastuzumab, chemotherapy, a…

Sponsor: AstraZeneca
NCT ID: NCT06764875
Sites in California:
  • Research Site — Duarte, California
  • Research Site — La Jolla, California
  • Research Site — Los Alamitos, California
  • Research Site — Los Angeles, California
  • Research Site — Santa Monica, California
Phase 3 Recruiting Industry

AZD0901 Compared With Investigator's Choice of Therapy in Participants With Second- or Later-line Advanced or Metastatic Gastric or Gastroesophageal Junction Adenocarcinoma Expressing Claudin18.2

The purpose of this study is to measure the efficacy and safety of AZD0901 compared to Investigator's choice of therapy as 2L+ treatment for participants with advanced or metastatic gastric or GEJ adenocarcinoma expressing CLDN18.2.

Sponsor: AstraZeneca
NCT ID: NCT06346392
Sites in California:
  • Research Site — Duarte, California
  • Research Site — Fullerton, California
  • Research Site — Irvine, California
  • Research Site — Los Angeles, California
  • Research Site — Los Angeles, California
Phase 2, Phase 3 Recruiting Industry

A Study to Evaluate the Safety and Efficacy of Pumitamig in Combination With Chemotherapy Versus Nivolumab in Combination With Chemotherapy in Participants With Previously Untreated Advanced or Metastatic Gastric, Gastroesophageal Junction, or Esophageal Adenocarcinoma (ROSETTA Gastric-204)

The purpose of this study is to evaluate the safety and efficacy of Pumitamig in combination with chemotherapy versus Nivolumab in combination with chemotherapy in participants with previously untreated advanced or metastatic gastric, gast…

Sponsor: Bristol-Myers Squibb
NCT ID: NCT07221149
Sites in California:
  • Local Institution - 0437 — Los Angeles, California
  • Local Institution - 0277 — Orange, California
  • Local Institution - 0428 — San Francisco, California
Phase 3 Recruiting Industry

Study of RYZ101 Compared With SOC in Pts w Inoperable SSTR+ Well-differentiated GEP-NET That Has Progressed Following 177Lu-SSA Therapy

This study aims to determine the safety, pharmacokinetics (PK) and recommended Phase 3 dose (RP3D) of RYZ101 in Part 1, and the safety, efficacy, and PK of RYZ101 compared with investigator-selected standard of care (SoC) therapy in Part 2…

Sponsor: RayzeBio, Inc.
NCT ID: NCT05477576
Sites in California:
  • Research Facility — Duarte, California
  • Research Facility — Irvine, California
  • Research Facility — Los Angeles, California
  • Research Facility — Palo Alto, California
  • Research Facility — San Francisco, California
Phase 3 Recruiting Industry

A Phase Ⅲ Clinical Study of HLX22 in Combination With Trastuzumab and Chemotherapy for the Treatment of Gastroesophageal Junction and Gastric Cancer

This is a double-blind, randomized, multiregion, comparative phase Ⅲ clinical study designed to evaluate the efficacy and safety of HLX22 in combination with trastuzumab and chemotherapy as first-line treatment in patients with HER2-positi…

Sponsor: Shanghai Henlius Biotech
NCT ID: NCT06532006
Sites in California:
  • Los Angeles Cancer Network — Anaheim, California
  • OPN - Oncology Physician Network (Los Alamitos) — Los Alamitos, California
Phase 3 Recruiting Industry

A Study of Zolbetuximab Together With Pembrolizumab and Chemotherapy in Adults With Gastric Cancer

Zolbetuximab is being studied in people with cancer in and around the stomach or where the food pipe (esophagus) joins the stomach, called gastroesophageal junction (GEJ) cancer. Zolbetuximab with chemotherapy may be used to treat stomach …

Sponsor: Astellas Pharma Global Development, Inc.
NCT ID: NCT06901531
Sites in California:
  • TOI Clinical Research — Cerritos, California
  • The Angeles Clinic and Research Institute, West Los Angeles Office — Los Angeles, California
Phase 2, Phase 3 Recruiting Network

Testing the Addition of Paclitaxel Administered Into the Abdominal Cavity Combined With Chemotherapy for Patients With Gastric Cancer Spread to the Abdominal Cavity

This study is being done to answer the following questions: Can we lower the chance of your gastric cancer from growing or spreading by administering paclitaxel chemotherapy directly into your abdominal cavity in addition to chemotherapy g…

Sponsor: ECOG-ACRIN Cancer Research Group
NCT ID: NCT07001748
Sites in California:
  • UC Irvine Health/Chao Family Comprehensive Cancer Center — Irvine, California
  • UCI Health - Chao Family Comprehensive Cancer Center and Ambulatory Care — Orange, California
Phase 3 Recruiting Industry

Using 18F-FAPI PET to Detect Metastatic Disease in Patients That Have Gastric or Esophageal Cancer.

This is a multi-site, open-label, non-randomized, single dose study to assess the clinical utility of \[¹⁸F\]FAPI-74 PET/CT in the detection of metastatic disease in individuals with pathologically confirmed gastric, gastroesophageal junct…

Sponsor: SOFIE
NCT ID: NCT07217704
Sites in California:
  • Helios CR Inc./RadNet — Cerritos, California
  • Hoag Memorial Hospital — Irvine, California
  • UCLA — Los Angeles, California
Phase 2 Recruiting Industry

A Study of Disitamab Vedotin With Other Anticancer Drugs in Solid Tumors

This clinical trial is studying solid tumor cancers. A solid tumor is one that starts in part of your body like your lungs or liver instead of your blood. Once they've grown bigger in one spot or spread to other parts of the body, they're …

Sponsor: Seagen, a wholly owned subsidiary of Pfizer
NCT ID: NCT06157892
Sites in California:
  • UC Irvine Health - Chao Family Comprehensive Cancer Center — Orange, California
  • UC Irvine Medical Center — Orange, California
  • University of California, San Francisco | HDFCCC - Hematopoietic Malignancies — San Francisco, California
  • UCLA Department of Medicine - Hematology & Oncology — Santa Monica, California
  • UCLA Hematology/Oncology - Parkside — Santa Monica, California
Phase 1, Phase 2 Recruiting Industry

A Phase 1/2a Study of DB-1303/BNT323 in Advanced/Metastatic Solid Tumors

This is a dose-escalation and dose-expansion Phase 1/2a trial to evaluate the safety and tolerability of DB-1303/BNT323 in subjects with advanced solid tumors that express HER2.

Sponsor: DualityBio Inc.
NCT ID: NCT05150691
Sites in California:
  • Helios Clinical Research — Cerritos, California
  • California Research Institute — Los Angeles, California
  • Sharp Memorial Hospital — San Diego, California
Phase 1, Phase 2 Recruiting Industry

Beamion BCGC-1: A Study to Find a Suitable Dose of Zongertinib Used Alone and in Combination With Other Treatments to Test Whether it Helps People With Different Types of HER2+ Cancer That Has Spread

This study is open to adults aged 18 years and older with different types of HER2+ cancer that has spread and cannot be removed by surgery. People can take part in this study if their tumours show HER2 aberrations and previous treatment wa…

Sponsor: Boehringer Ingelheim
NCT ID: NCT06324357
Sites in California:
  • The Oncology Institute of Hope and Innovation — Cerritos, California
  • Ellison Medical Institute — Los Angeles, California
  • Valkyrie Clinical Trials — Los Angeles, California
  • University of California Los Angeles — Los Angeles, California
  • University of California Irvine — Orange, California
Phase 1, Phase 2 Recruiting Industry

A Study of Bispecific Antibody MCLA-158 in Patients With Advanced Solid Tumors

This is a Phase 1/2 open-label, multi-center, multi-national study with an initial dose escalation part to determine the recommended Phase II dose (RP2D) of MCLA-158 single agent in patients with mCRC. The dose escalation part has been com…

Sponsor: Merus B.V.
NCT ID: NCT03526835
Sites in California:
  • UCSD — La Jolla, California
  • USC Norris Comprehensive Cancer Center — Los Angeles, California
  • Sharp Healthcare — San Diego, California
Phase 1, Phase 2 Recruiting Industry

Study of Elironrasib and Daraxonrasib as Monotherapies and Combination Therapy in Participants With Advanced KRAS G12C Mutant Solid Tumors

This study is to evaluate the safety, tolerability, and PK profiles of Elironrasib and Daraxonrasib as monotherapies and combination therapy in patients with KRAS G12C-mutated solid tumors.

Sponsor: Revolution Medicines, Inc.
NCT ID: NCT06128551
Sites in California:
  • City of Hope — Duarte, California
  • UC IRVINE Health — Orange, California
  • UC Davis Comprehensive Cancer Center — Sacramento, California
  • Stanford Cancer Institute — Stanford, California
Phase 1, Phase 2 Recruiting Industry

A Study of a Selective T Cell Receptor (TCR) Targeting, Bifunctional Antibody-fusion Molecule STAR0602 in Participants With Advanced Solid Tumors

This is an open label, multicenter, phase 1/2 study to assess the safety/tolerability and preliminary clinical activity of STAR0602 as a single agent administered intravenously in participants with advanced solid tumors that are antigen-ri…

Sponsor: Marengo Therapeutics, Inc.
NCT ID: NCT05592626
Sites in California:
  • Loma Linda University Cancer Center — Loma Linda, California
  • UC Davis Comprehensive Cancer Center — Sacramento, California
Phase 2 Recruiting Industry

Study of Dato-DXd as Monotherapy and in Combination With Anti-cancer Agents in Patients With Advanced Solid Tumours (TROPION-PanTumor03)

TROPION-PanTumor03 will investigate the safety, tolerability, and anti-tumour activity of Datopotamab Deruxtecan (Dato-DXd) as Monotherapy and in Combination with Anticancer Agents in Patients with Advanced/Metastatic Solid Tumours.

Sponsor: AstraZeneca
NCT ID: NCT05489211
Sites in California:
  • Research Site — Los Angeles, California
  • Research Site — San Diego, California
  • Research Site — Santa Rosa, California
Phase 2 Recruiting Industry

A Study To Evaluate The Efficacy And Safety Of Ifinatamab Deruxtecan (I-DXd) In Subjects With Recurrent Or Metastatic Solid Tumors (IDeate-PanTumor02)

This study is designed to assess the efficacy and safety of ifinatamab deruxtecan (I-DXD) in the following tumor types: endometrial cancer (EC); head and neck squamous cell carcinoma (HNSCC); pancreatic ductal adenocarcinoma (PDAC); colore…

Sponsor: Daiichi Sankyo
NCT ID: NCT06330064
Sites in California:
  • Los Angeles Cancer Network — Los Angeles, California
  • Valkyrie Clinical Trials — Los Angeles, California
  • Pih Health Hematology Medical Oncology — Whittier, California
Phase 1, Phase 2 Recruiting Industry

A Clinical Study to Test if an Investigational Treatment Called BNT326 is Safe and Potentially Beneficial When Used Alone or in Combination With Other Investigational Treatments Such as BNT327, for People With Advanced Malignant Tumors

This study will evaluate the safety, efficacy, optimal dose, and pharmacokinetics (PK) of BNT326 as monotherapy (Part 1) and as combination treatment with immunotherapeutic agents (Part 2) in participants with histologically or cytological…

Sponsor: BioNTech SE
NCT ID: NCT07070232
Sites in California:
  • University of California San Francisco — San Francisco, California
Phase 2 Recruiting Academic/Other

Ramucirumab and Trifluridine/Tipiracil or Paclitaxel for the Treatment of Patients With Previously Treated Advanced Gastric or Gastroesophageal Junction Cancer

This phase II trial studies the effect of the combination of ramucirumab and trifluridine/tipiracil or paclitaxel in treating patients with previously treated gastric or gastroesophageal junction cancer that has spread to other places in t…

Sponsor: Academic and Community Cancer Research United
NCT ID: NCT04660760
Sites in California:
  • USC / Norris Comprehensive Cancer Center — Los Angeles, California
Phase 2 Recruiting Industry

A Study of TRK-950 When Used in Combination With Ramucirumab and Paclitaxel in Patients With Gastric Cancer

This study will assess the efficacy, safety, optimal dose and ADA and NAbs development of TRK-950 at two separate dose levels in combination with ramucirumab and paclitaxel (RAM+PTX) as compared with RAM + PTX treatment alone in participan…

Sponsor: Toray Industries, Inc
NCT ID: NCT06038578
Sites in California:
  • City of Hope — Duarte, California
  • City of Hope at Orange County Lennar Foundation Cancer Center — Irvine, California
  • University of California, Los Angeles — Santa Monica, California
Phase 1, Phase 2 Recruiting Industry

Spevatamig (PT886) as Monotherapy or in Combination With Chemo and/or ICI, for the Treatment of Patients With Advanced Gastric, Gastroesophageal Junction, Pancreatic Ductal or Biliary Tract Carcinomas (the TWINPEAK Study)

This is a first-in-human, Phase 1/2, open-label, dose escalation and dose expansion and combination study designed to evaluate the safety, tolerability, pharmacokinetics, pharmacodynamics, and preliminary efficacy of Spevatamig (PT886). Pa…

Sponsor: Phanes Therapeutics
NCT ID: NCT05482893
Sites in California:
  • City of Hope (City of Hope National Medical Center, City of Hope Medical Center) — Duarte, California
  • USC Norris Comprehensive Cancer Center — Los Angeles, California
Phase 2 Recruiting Industry

Novel Combinations in Participants With Locally Advanced Unresectable or Metastatic Gastric or Gastroesophageal Junction Adenocarcinoma

This is a Phase II, open-label, multi-drug, multi-centre study designed to assess the efficacy, safety, tolerability, pharmacokinetics, and immunogenicity of novel combination therapies in participants with locally advanced unresectable or…

Sponsor: AstraZeneca
NCT ID: NCT05702229
Sites in California:
  • Research Site — Los Angeles, California
  • Research Site — Los Angeles, California

Showing 25 of 104 trials with sites in California. See all stomach cancer trials →

Medical disclaimer: This page aggregates public ClinicalTrials.gov data. It is not medical advice. Always confirm eligibility and enrollment details with the trial site or your oncologist.

Source: ClinicalTrials.gov API v2 · Last checked: 2026-04-20