Retlirafusp Alfa Injection Plus Chemotherapy Versus Investigator's Choice of Anti-PD-1 Antibody Plus Chemotherapy as First-line Treatment for Advanced Gastric Cancer With Liver Metastases

June 24, 2026 updated by: Peking University

Retlirafusp Alfa Injection Plus Chemotherapy Versus Investigator's Choice of Anti-PD-1 Antibody Plus Chemotherapy for Previously Untreated, Advanced Gastric or Gastroesophageal Junction Cancer With Liver Metastases: a Randomized, Controlled, Multicenter Phase III Clinical Study

This study is a randomized, controlled, open-label phase III clinical trial, aims to compare the efficacy and safety of Retlirafusp alfa injection plus CAPOX versus the investigator's choice of anti-PD-1 antibody plus CAPOX as first-line treatment in patients with advanced gastric cancer (GC) or gastroesophageal junction cancer (GEJC) with liver metastases

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Not yet recruiting

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Estimated)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
332

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Phase 3

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • 1. Age ≥ 18 years; 2. Patients with recurrent or previously untreated advanced gastric or gastroesophageal junction cancer with liver metastases, histopathologically confirmed as adenocarcinoma.

    3. No prior systemic therapy (including anti-HER2 therapy) for advanced or metastatic GC/GEJC. Patients who have received prior adjuvant or neoadjuvant therapy are eligible provided that the time from completion of last therapy to first recurrence or disease progression is > 6 months.

    4. Eastern Cooperative Oncology Group (ECOG) performance status of 0-1. 5. At least one evaluable lesion according to Response Evaluation Criteria in Solid Tumors (RECIST) version 1.1.

    6. Adequate organ and bone marrow function. 7. Female subjects of non-childbearing potential are defined as those who are postmenopausal, or have undergone documented hysterectomy and/or bilateral oophorectomy. Male subjects and female subjects of childbearing potential must agree to use at least one medically approved contraceptive method during the study and for 120 days after the last dose of study treatment. A serum pregnancy test must be negative within 3 days prior to the start of study treatment, and subjects must not be breastfeeding.

    8. Voluntarily signed informed consent, and willing and able to comply with scheduled visits, study treatment, laboratory tests, and other study procedures.

Exclusion Criteria:

  • 1. Known gastric cancer of squamous cell carcinoma, undifferentiated carcinoma, or other histological types, or adenocarcinoma mixed with other histological types.

    2. Untreated or inadequately treated central nervous system (CNS) metastases, or uncontrolled or symptomatic active CNS metastases.

    3. Diagnosis of any other malignancy within 5 years prior to study entry, except for: skin basal cell carcinoma or squamous cell carcinoma that has been locally treated and documented as cured, superficial bladder cancer, cervical carcinoma in situ, breast ductal carcinoma in situ, papillary thyroid carcinoma, and other early-stage tumors with low risk of recurrence that have undergone curative treatment as judged by the investigator.

    4. Presence of any active, known, or suspected autoimmune disease. 5. Prior treatment with TGF-β inhibitors, anti-PD-1/PD-L1 antibodies, anti-PD-L2 antibodies, anti-CD137 antibodies, CTLA-4 antibodies, or other drugs/antibodies targeting T-cell costimulatory or checkpoint pathways.

    6. Severe, non-healing, or dehiscent wound, or active ulcer, or untreated fracture.

    7. Any other serious physical or mental illness, or laboratory abnormalities that may increase the risk of study participation, interfere with study results, or render the subject unsuitable for the study judged by the investigator.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: Retlirafusp alfa Group
Drug: Capecitabine
Capecitabine, Q3W
Drug: Oxaliplatin
Oxaliplatin, Q3W
Drug: Retlirafusp alfa Injection
Retlirafusp alfa injection,1800mg, Q3w
Active Comparator: Investigator's choice of anti-PD-1 antibody Group
Drug: Capecitabine
Capecitabine, Q3W
Drug: Oxaliplatin
Oxaliplatin, Q3W
Drug: Sintilimab or Tislelizumab (based on investigator's choice)
Sintilimab or Tislelizumab, Q3w

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Time Frame
Progression-free Survival (PFS) based on investigator assessment according to RECIST 1.1
Time Frame: Up to 2 years
Up to 2 years

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Time Frame
Overall survival (OS)
Time Frame: Up to approximately 5 years
Up to approximately 5 years
Objective response rate (ORR) based on investigator assessment according to RECIST 1.1
Time Frame: Up to 2 years
Up to 2 years
Disease control rate (DCR) based on investigator assessment according to RECIST 1.1
Time Frame: Up to 2 years
Up to 2 years
Duration of response (DoR) based on investigator assessment according to RECIST 1.1
Time Frame: Up to 2 years
Up to 2 years
Adverse events (AEs).
Time Frame: Up to approximately 5 years
Up to approximately 5 years

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Peking University

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Estimated)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
June 26, 2026

Primary Completion (Estimated)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
December 31, 2028

Study Completion (Estimated)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
December 31, 2028

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
June 24, 2026

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
June 24, 2026

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
June 30, 2026

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
June 30, 2026

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
June 24, 2026

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
June 1, 2026

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • MA- GC-III-034

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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Medical Conditions

Drug Interventions

Conditions

Rare Diseases

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Dietary Supplements

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Locations

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