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A Randomized, Open-Label, Multicenter Phase 3 Trial of Domvanalimab, Zimberelimab, and Chemotherapy Versus Nivolumab and Chemotherapy in Participants with Previously Untreated Locally Advanced Unresectable or Metastatic Gastric, Gastroesophageal Junction, and Esophageal Adenocarcinoma

Status
Active, not recruiting
Phases
Phase 3
Study type
Interventional
Source
EU CTIS
Registry ID
CTIS2023-507522-16-00
Acronym
STAR-221
Enrollment
152
Registered
2024-08-29
Start date
2023-05-22
Completion date
Unknown
Last updated
2025-12-10

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Esophageal or Gastric Cancer, Metastatic Esophageal or Gastric Cancer

Brief summary

OS is defined as the length of time from date of randomization until the date of death from any cause

Detailed description

PFS is defined as the time from date of randomization until disease progression or death from any cause, whichever comes first, as measured per Response Evaluation Criteria in Solid Tumors version 1.1 (RECIST 1.1) as assessed by the investigator, Time to first symptom deterioration in the FACT-Ga gastric cancer subscale., Objective response rate (ORR) is defined as the proportion of participants who have achieved confirmed complete response (CR) or confirmed partial response (PR) to study therapy as assessed by the investigator according to RECIST 1.1, Duration of response (DOR) is measured from the time of first confirmed response (CR or PR as measured by RECIST v1.1) as assessed by the investigator, until the date of first documented disease progression or death, whichever comes first., 5. The incidence and severity of adverse events (AEs) and serious adverse events (SAEs), and any clinically meaningful trends in safety parameters

Interventions

DRUGDOMVANALIMAB
DRUGCALCIUM FOLINATE
DRUGFLUOROURACIL
DRUGOXALIPLATIN
DRUGCAPECITABINE
DRUGZimberelimab
DRUGNIVOLUMAB

Sponsors

Arcus Biosciences Inc.
Lead SponsorINDUSTRY

Eligibility

Sex/Gender
All
Age
18 Years to No maximum

Design outcomes

Primary

MeasureTime frame
OS is defined as the length of time from date of randomization until the date of death from any cause

Secondary

MeasureTime frame
PFS is defined as the time from date of randomization until disease progression or death from any cause, whichever comes first, as measured per Response Evaluation Criteria in Solid Tumors version 1.1 (RECIST 1.1) as assessed by the investigator, Time to first symptom deterioration in the FACT-Ga gastric cancer subscale., Objective response rate (ORR) is defined as the proportion of participants who have achieved confirmed complete response (CR) or confirmed partial response (PR) to study therapy as assessed by the investigator according to RECIST 1.1, Duration of response (DOR) is measured from the time of first confirmed response (CR or PR as measured by RECIST v1.1) as assessed by the investigator, until the date of first documented disease progression or death, whichever comes first., 5. The incidence and severity of adverse events (AEs) and serious adverse events (SAEs), and any clinically meaningful trends in safety parameters

Countries

France, Greece, Hungary, Italy, Lithuania, Poland, Portugal, Romania, Spain

Outcome results

None listed

Source: EU CTIS · Data processed: Feb 4, 2026