To Explore the Optimal Therapeutic Window for Imatinib in the Adjuvant Treatment of Intermediate and High-risk Gastrointestinal Stromal Tumors

May 22, 2026 updated by: Xinhua Zhang, MD, First Affiliated Hospital, Sun Yat-Sen University
The goal of this observational study is to explore the quantitative relationship between in vivo exposure and efficacy, and the relationship between in vivo exposure and the risk of adverse reactions after adjuvant treatment of imatinib in patients with intermediate and high-risk GIST in the real world, so as to determine the optimal treatment window for imatinib .

Study Overview

Status

Completed

Conditions

Study Type

Observational

Enrollment (Actual)

328

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

Ages Eligible for Study

  • Child
  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Sampling Method

Non-Probability Sample

Study Population

Patients using imatinib as adjuvant therapy for GIST

Description

Inclusion Criteria:

  1. Patients using imatinib as adjuvant therapy for GIST from 2015~2025
  2. ECOG (Eastern Cooperative Oncology Group performance status) physical fitness score ranges from 0 to 4
  3. Local GIST diagnosis confirmed by histology
  4. The surgical resection type of primary GIST (R0 / R1) was documented
  5. Regular long-term maintenance doses of imatinib at steady-state trough concentrations ≥ 3 times

Exclusion Criteria:

  1. Known GISTs insensitive to imatinib, such as PDGFRA exon 18 D842V mutation, KIT exon 17 mutation, SDH-deletion type, NF-1 mutation, and NTRK fusion mutation
  2. Those with poor medication adherence
  3. Missing important diagnostic and treatment data

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

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
RFS
Time Frame: ten years
From patient enrollment to tumor recurrence or death for any reason
ten years

Collaborators and Investigators

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

Sponsor

First Affiliated Hospital, Sun Yat-Sen 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 (Actual)

January 1, 2015

Primary Completion (Actual)

December 31, 2025

Study Completion (Actual)

December 31, 2025

Study Registration Dates

First Submitted

May 22, 2026

First Submitted That Met QC Criteria

May 22, 2026

First Posted (Actual)

May 29, 2026

Study Record Updates

Last Update Posted (Actual)

May 29, 2026

Last Update Submitted That Met QC Criteria

May 22, 2026

Last Verified

May 1, 2026

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • No.[2026]337

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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