NCT00041197

Imatinib Mesylate in Treating Patients With Primary Gastrointestinal Stromal Tumor That Has Been Completely Removed By Surgery

A Phase III Randomized Double-Blind Study of Adjuvant STI571 (Gleevec™) Versus Placebo in Patients Following the Resection of Primary Gastrointestinal Stromal Tumor (GIST)

• Status: Completed
• Phase: Phase 3
• Study type: Interventional
• Enrollment: 732 (actual)
• Sponsor: National Cancer Institute (NCI) · NIH
• Sex: All
• Age: 18 Years
• Healthy volunteers: Not accepted

Summary

This randomized phase III trial is studying imatinib mesylate to see how well it works compared to placebo in treating patients with primary gastrointestinal stromal tumor that has been completely removed by surgery. Imatinib mesylate may interfere with the growth of tumor cells and may be an effective treatment for patients with primary gastrointestinal stromal tumor that has been completely removed by surgery.

Detailed description

PRIMARY OBJECTIVES: I. To determine whether patients with resected primary gastrointestinal stromal tumor (GIST) who are randomized to the STI571 (imatinib mesylate) Arm have longer recurrence-free survival as compared to the patients randomized to the placebo Arm. SECONDARY OBJECTIVES: I. To ascertain whether patients with resected primary GIST who are randomized to the STI571 Arm have longer survival as compared to the patients randomized to the placebo Arm. II. To obtain from patients with GIST: tumor tissue (before therapy with STI571 and if the patient develops recurrence), blood specimens (before therapy with STI571), and serum specimens (before therapy with STI571, after completing therapy with STI571, and if the patient develops recurrence) for scientific correlative analyses. III. To assess the safety/efficacy of oral STI571 therapy in the adjuvant setting. OUTLINE: Patients are randomized to 1 of 2 treatment arms. ARM I: Patients receive oral imatinib mesylate (Gleevec; STI571) once daily. Treatment continues for 1 year in the absence of unacceptable toxicity. Patients who develop a recurrence during the year of initial treatment receive imatinib mesylate (Gleevec; STI571) at an increased dose. Patients who develop a recurrence after the year of initial treatment restart imatinib mesylate (Gleevec; STI571) and continue taking the drug at the discretion of the principal investigator. ARM II: Patients receive oral placebo once daily. Treatment continues for 1 year in the absence of unacceptable toxicity. Patients who develop a recurrence at any time discontinue placebo and crossover to arm I. Treatment on arm I continues at the discretion of the principal investigator. Patients are followed every 3 months for 2 years, then every 6 months for 10 years.

Conditions

• Gastrointestinal Stromal Tumor

Interventions

Type	Name	Description
DRUG	imatinib mesylate	Given orally (PO)
OTHER	placebo	Given PO
OTHER	laboratory biomarker analysis	Correlative studies

Timeline

• Start date: 2002-06-01
• Primary completion: 2007-04-01
• First posted: 2003-01-27
• Last updated: 2013-07-16

Locations

1 site across 1 country: United States