Study to Assess the Safety, Tolerability, and Efficacy of IDX-1197 in Combination With XELOX or Irinotecan in Patients With Advanced Gastric Cancer

April 14, 2026 updated by: Idience Co., Ltd.

An Open-Label, International, Multicenter, Phase 1b/2a Study to Assess the Safety, Tolerability, and Efficacy of IDX-1197 in Combination With XELOX (Capecitabine and Oxaliplatin) or Irinotecan in Patients With Advanced Gastric Cancer

This is an open-label, Phase 1b/2a study to evaluate the safety and tolerability of IDX-1197 and determine the MTD and RP2D in combination with XELOX or irinotecan in patients with advanced gastric cancer.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Active, not 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 (Actual)

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.
87

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 2
  • Phase 1

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.

Study Contact Backup

Study Locations

  • China
      • Beijing, China
        • Beijing Cancer Hospital
      • Guangzhou, China
        • The Sixth Affiliated Hospital of Sun Yat-sen University
      • Shanghai, China
        • Shanghai East Hospital
  • South Korea
      • Busan, South Korea, 49201
        • Dong-A University Hospital
      • Seongnam, South Korea
        • Seoul National University Bundang Hospital
      • Seoul, South Korea
        • Asan Medical Center
      • Seoul, South Korea
        • Samsung Medical Center
      • Seoul, South Korea
        • Seoul National University Hospital
      • Seoul, South Korea, 02841
        • Korea University Anam Hospital
      • Seoul, South Korea, 08308
        • Korea University Guro Hospital
      • Seoul, South Korea
        • Severance Hospital - Yonsei Cancer Center
    • Jeollabuk-do
      • Jeonju, Jeollabuk-do, South Korea
        • Jeonbuk National University Hospital
  • United States
    • California
      • Los Angeles, California, United States, 90033
        • USC Norris Comp. Cancer Ctr Hospital
    • Louisiana
      • Baton Rouge, Louisiana, United States, 70809
        • Hematology Oncology Clinic Baton Rouge / Sarah Cannon
    • Massachusetts
      • Boston, Massachusetts, United States, 02215
        • Beth Israel Deaconess Medical Center
      • Boston, Massachusetts, United States, 02215
        • Dana Farber Cancer Institute
    • New Jersey
      • East Brunswick, New Jersey, United States, 08816
        • Astera Cancer Care

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

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • Group 1, patients with treatment-naïve recurrent or advanced metastatic gastric cancer including gastroesophageal junction or upper part of the stomach.
  • Group 2, patients with recurrent or advanced metastatic gastric cancer including gastroesophageal junction or upper part of the stomach, who were treated ≥2 times with palliative chemotherapy before screening.
  • At least 1 evaluable lesion for the dose escalation part and at least 1 measurable lesion according to RECIST v1.1 for the dose expansion part.
  • Eastern Cooperative Oncology Group (ECOG) performance status ≤1.
  • Group 2 Part C, patients should have UGT1A1 genotype tested during or prior to screening.

Exclusion Criteria:

  • Symptomatic central nervous system or uncontrolled brain metastasis
  • Carcinomatous meningitis or its history.
  • For Group 1, patients who are HER 2 positive.
  • Any other concurrent uncontrolled illness including, but not limited to, active or ongoing symptomatic infection requiring IV antibiotic treatment, uncontrolled diabetes, hepatic, renal, or respiratory illness.
  • Severe or unstable angina, myocardial infarction or ischemia, symptomatic congestive heart failure, arterial or venous thromboembolism requiring coronary artery bypass graft or stent within the past 6 months or clinically significant cardiac dysrhythmia or New York Heart Association class II ~ IV heart disease within 6 months of randomization.
  • Uncontrolled hypertension
  • Immunocompromised patients, such as patients known to be serologically positive for HIV.
  • Patients with known active Hepatitis B or C infection.
  • Patients with known active or symptomatic pneumonitis, or history of non-infectious pneumonitis requiring steroids.
  • Diagnosis of a myelodysplastic syndrome/acute myeloid leukemia or its suspicious characteristics.
  • Any unresolved clinically significant Common Terminology Criteria for Adverse Events (CTCAE) Grade ≥2 toxicity
  • Resting ECG with measurable QTcF > 470 msec on 2 or more time points within a 24-hour period or family history of long QT syndrome.
  • Current use of a cytochrome P3A4 inhibitor or inducer and strong uridine diphosphate (UDP)-glucuronosyltransferase 1A1 (UGT1A1) inhibitors.

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: Non-Randomized
  • Interventional Model: Sequential 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.
Other: Group 1
Drug: IDX-1197+XELOX
The dose levels will be escalated following a 3+3 dose escalation scheme.
Other: Group 2
Drug: IDX-1197+Irinotecan
The dose levels will be escalated following a 3+3 dose escalation scheme.

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
Measure Description
Time Frame
Maximum Tolerated Dose (MTD) and Recommended Phase 2 Dose (RP2D)
Time Frame: through study completion (Up to 12 months)
To determine the MTD and RP2D of IDX-1197 when given in combination with XELOX or Irinotecan. This will be accomplished by the standard 3+3 dose escalation design. If 2 of the 3 to 6 patients in a particular dose level experience a DLT, the dose escalation should be stopped at this dose level, and the MTD will be determined.
through study completion (Up to 12 months)
Dose Limiting Toxicities (DLTs)
Time Frame: during the first 21-day cycle for Group 1 and through first 2 cycles (14 days each) for Group 2
Occurrence of DLTs
during the first 21-day cycle for Group 1 and through first 2 cycles (14 days each) for Group 2

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.
Idience Co., Ltd.

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 (Actual)

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 28, 2021

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.
July 31, 2026

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.
March 31, 2027

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).
January 13, 2021

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.
January 21, 2021

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.
January 27, 2021

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.
April 17, 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.
April 14, 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.
April 1, 2026

More Information

Terms related to this study

Keywords

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.
  • ID-VDP-103

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

UNDECIDED

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

Yes

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

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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