New drug combo aims to outperform standard immunotherapy in stomach cancer
NCT ID NCT05568095
First seen Jun 27, 2026 · Last updated Sep 04, 2026 · Updated 5 times
Summary
This phase 3 study tests whether a new combination of two immunotherapy drugs (domvanalimab and zimberelimab) plus chemotherapy works better than the current standard (nivolumab plus chemotherapy) for people with advanced stomach, gastroesophageal junction, or esophageal cancer that cannot be removed by surgery or has spread. About 1040 participants will be randomly assigned to one of the two treatment groups. The main goal is to see if the new combo helps people live longer.
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Study facts
What this study's own registry entry says, in plain language.
- Phase
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Phase 3
Large-scale testing in a bigger group. Usually the last step before a treatment can be approved.
- Participants
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1,040 people
The number who actually took part.
- Started
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Nov 2022
- Finished
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Aug 2026
- Lead sponsor
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A company
The lead sponsor is a pharmaceutical, biotech, or medical-device company.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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18 years and older
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Key Inclusion Criteria: * Capable of giving signed informed consent which is in compliance with the requirements and restrictions listed in the informed consent form (ICF) and in protocol. * Histologically confirmed diagnosis of locally advanced unresectable or metastatic gastric, GEJ, or esophageal adenocarcinoma. * Eastern Cooperative Oncology Group (ECOG) performance status of 0-1. * At least one measurable target lesion per Response Evaluation Criteria in Solid Tumors (RECIST) v1.1. Key Exclusion Criteria: * Underlying medical or psychiatric conditions that, in the investigator's or sponsor's opinion, will make the administration of study-specified therapy hazardous, including but not limited to: * Interstitial lung disease, including history of interstitial lung disease or non-infectious pneumonitis. Active viral, bacterial, or fungal infections requiring parenteral treatment within 14 days of randomization. * Clinically significant cardiovascular disease, such as New York Heart Association Class II or greater cardiac disease or cerebrovascular accident within 3 months prior to randomization, unstable angina, or new onset angina within 3 months prior to randomization, myocardial infarction within 6 months prior to randomization, or unstable arrhythmia within 3 months prior to randomization. * History of prior solid-organ transplantation, including allogenic bone marrow transplantation. * Dementia, psychiatric, or substance abuse disorders that would interfere with satisfying the requirements of the trial. * Known human epidermal growth factor receptor 2 (HER-2) positive tumor. * Known untreated, symptomatic, or actively progressing central nervous system (CNS) (brain) metastases. Participants with leptomeningeal metastases are excluded from enrollment. * Received prior systemic treatment for locally advanced unresectable or metastatic gastric, GEJ, or esophageal adenocarcinoma. * Disease progression within 6 months of completion of neoadjuvant or adjuvant therapy. Note: Other protocol defined Inclusion/Exclusion criteria may apply.
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
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Boston, Massachusetts, 02114, United States
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Ann Arbor, Michigan, 48109, United States
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Saint Louis Park, Minnesota, 55426, United States
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Mineola, New York, 11501, United States
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New York, New York, 10016, United States
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New York, New York, 10065, United States
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Durham, North Carolina, 27710, United States
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Cleveland, Ohio, 44106, United States
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Cleveland, Ohio, 44111, United States
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Columbus, Ohio, 43219, United States
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Mayfield Heights, Ohio, 44124, United States
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Portland, Oregon, 97225, United States
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Nashville, Tennessee, 37203, United States
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Nashville, Tennessee, 37232, United States
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Dallas, Texas, 75390, United States
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Fort Worth, Texas, 76104, United States
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Houston, Texas, 77054, United States
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Fairfax, Virginia, 22031, United States
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Seattle, Washington, 98109, United States
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Milwaukee, Wisconsin, 53226, United States
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Buenos Aires, Argentina
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La Rioja, Argentina
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Mar del Plata, Argentina
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Clayton, Australia
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Murdoch, Australia
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Barretos, Brazil
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Ijuí, Brazil
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Natal, Brazil
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Porto Alegre, Brazil
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Halifax, Canada
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Montreal, Canada
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Ottawa, Canada
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Toronto, Canada
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La Florida, Chile
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Port Montt, Chile
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Providencia, Chile
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Recoleta, Chile
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Santiago, Chile
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Talca, Chile
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Changchun, China
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Changzhou, China
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Fuzhou, China
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Guangzhou, China
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Haikou, China
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Hangzhou, China
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Hefei, China
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Shanghai, China
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Tianjin, China
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Zhengzhou, China
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Bordeaux, France
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Brest, France
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Caen, France
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Lille, France
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Lyon, France
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Montpellier, France
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Plérin, France
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Poitiers, France
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Toulouse, France
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Villejuif, France
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Kutaisi, 4600, Georgia
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Tbilisi, 112, Georgia
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Tbilisi, 144, Georgia
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Tbilisi, 159, Georgia
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Tbilisi, 186, Georgia
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Guatemala City, Guatemala
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Quetzaltenango, Guatemala
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Happy Valley, Hong Kong
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Hong Kong, Hong Kong
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Tuenmen, Hong Kong
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Budapest, Hungary
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Kecskemét, Hungary
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Pécs, Hungary
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Jerusalem, Israel
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Petah Tikva, Israel
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Tel Aviv, Israel
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Florence, Italy
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Milan, Italy
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Milan, Italy
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Ravenna, Italy
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Rozzano, Italy
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Udine, Italy
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Akashi, Japan
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Bunkyō City, Japan
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Chiba, Japan
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Fukuoka, Japan
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Kashiwa-shi, Japan
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Kawasaki, Japan
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Kōtō City, Japan
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Matsuyama, Japan
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Nagaizumi-cho, Japan
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Nagoya, Japan
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Niigata, Japan
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Osaka, Japan
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Osakasayama-shi, Japan
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Ota-shi, Japan
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Saitama, Japan
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Tokyo, Japan
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Yokohama, Japan
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Kaunas, Lithuania
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Klaipėda, Lithuania
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Vilnius, Lithuania
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George Town, Malaysia
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Kuala Lumpur, Malaysia
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Kuching, Malaysia
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Colonia Centro, 94300, Mexico
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Mexico City, 3100, Mexico
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Mérida, 97134, Mexico
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San Pedro Garza García, 66278, Mexico
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Toluca, 50120, Mexico
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San Isidro, Peru
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San Juán de Miraflores, Peru
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Surquillo, Peru
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Bacolod City, Philippines
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Baguio City, Philippines
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Cebu City, Philippines
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Manila, Philippines
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Lublin, Poland
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Tychy, Poland
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Warsaw, Poland
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Coimbra, Portugal
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Lisbon, Portugal
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Porto, Portugal
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Baia Mare, Romania
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Bucharest, Romania
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Cluj-Napoca, Romania
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Craiova, Romania
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Florești, Romania
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Iași, Romania
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Suceava, Romania
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Belgrade, Serbia
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Kragujevac, Serbia
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Busan, South Korea
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Daegu, South Korea
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Seongnam, South Korea
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Seoul, South Korea
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Barcelona, Spain
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Madrid, Spain
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Santander, Spain
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Valencia, Spain
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Zaragoza, Spain
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Bang Phlat, Thailand
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Hat Yai, Thailand
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Ubon Ratchathani, Thailand
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Adana, Turkey (Türkiye)
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Ankara, Turkey (Türkiye)
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Edirne, Turkey (Türkiye)
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Istanbul, Turkey (Türkiye)
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İzmit, Turkey (Türkiye)
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Malatya, Turkey (Türkiye)
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Mamak, Turkey (Türkiye)
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Van, Turkey (Türkiye)
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Yakutiye, Turkey (Türkiye)
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Yüreğir, Turkey (Türkiye)
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London, United Kingdom
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Manchester, United Kingdom
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Oxford, United Kingdom
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Sutton, United Kingdom
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Los Angeles, California, 90033, United States
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Orange, California, 92868, United States
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Santa Monica, California, 90404, United States
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New Haven, Connecticut, 06520, United States
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Washington D.C., District of Columbia, 22057, United States
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Fort Myers, Florida, 33901, United States
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St. Petersburg, Florida, 33705, United States
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Tallahassee, Florida, 32308, United States
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Louisville, Kentucky, 40202, United States
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Louisville, Kentucky, 40217, United States
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New Orleans, Louisiana, 70121, United States
More trials for these conditions
Other studies related to the condition(s) this trial covers.
- One small incision vs several: robotic stomach cancer surgery put to the test
- Can PET scans reveal which stomach cancers will respond to immunotherapy?
- Can a direct hit to tumors make immunotherapy work better?
- New antibody aims to preserve immune checkpoint while fighting cancer
- Can a new drug boost immunotherapy against Hard-to-Treat stomach cancer?
- Can a vaccine stop GI cancers from returning?