Assessing IDX-1197 with chemotherapy for advanced gastric cancer

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

Phase1; Phase2 Interventional Idience Co., Ltd. · NCT04725994

This study is testing a new drug called IDX-1197 combined with chemotherapy to see if it is safe and effective for people with advanced gastric cancer.

Quick facts

PhasePhase1; Phase2
Study typeInterventional
Enrollment100 (estimated)
Ages18 Years and up
SexAll
SponsorIdience Co., Ltd. Industry-sponsored
Drugs / interventionschemotherapy
Locations14 sites (Los Angeles, California and 13 other locations)
Trial IDNCT04725994 on ClinicalTrials.gov

What this trial studies

This open-label Phase 1b/2a study evaluates the safety and tolerability of IDX-1197 when combined with either XELOX or irinotecan in patients with advanced gastric cancer. The study aims to determine the maximum tolerated dose (MTD) and recommended Phase 2 dose (RP2D) for these combinations. Patients will be monitored for efficacy and safety outcomes throughout the trial.

Who should consider this trial

Good fit: Ideal candidates include patients with treatment-naïve or previously treated advanced gastric cancer who meet specific inclusion criteria.

Not a fit: Patients with symptomatic central nervous system metastasis or those who are HER2 positive may not benefit from this study.

Why it matters

Potential benefit: If successful, this treatment could provide a new therapeutic option for patients with advanced gastric cancer.

How similar studies have performed: Other studies have explored similar combinations in gastric cancer, but the specific use of IDX-1197 is a novel approach.

Eligibility criteria

Show full inclusion / exclusion criteria
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.

Where this trial is running

Los Angeles, California and 13 other locations

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Gastric Cancer1197IDX-1197venadaparib
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.