Trial of Tasigna (Nilotinib) 400 mg Twice Daily Alone or With Gleevec (Imatinib Mesylate) 400 mg Daily for Patients With Advanced Gastrointestinal Stromal Tumor (GIST)

GIST Clinical Trial

Official title: Open Label Phase II Randomized Trial of Tasigna (Nilotinib) 400 mg Twice Daily Alone or in Combination With Gleevec (Imatinib Mesylate) 400 mg Daily for Patients With Advanced GIST That Have Progressed on High Dose Imatinib

Status Terminated

Clinical Trial Summary

Patients with advanced GIST are treated with imatinib. This study seeks to look at a new therapeutic agent at the time of tumor progression following treatment with 600-800 mg daily of imatinib. The study is looking to see if Nilotinib (tasigna) alone or in combination with imatinib (gleevec) is more effective at controlling disease.

Clinical Trial Description

Resistance to imatinib does develop and represents a major clinical challenge. Mechanisms implicated in imatinib resistance include: target resistance due to new KIT or PDGFRA mutations or over expression of the KIT protein; target modulation due to activation of an alternate receptor tyrosine kinase protein with loss of KIT oncoprotein expression; functional resistance due to KIT or PDGFRA activation without a secondary mutation; and alterations in imatinib uptake by P-glycoprotein.

This study seeks to test nilotinib alone and nilotinib in combination with imatinib in patients that have progressed on imatinib.

Nilotinib is a new synthetic second-generation inhibitor of the BCR-ABL tyrosine kinase that competes for the ATP-bindings sites of BCR-ABL. A completed phase I trial assessed the activity of nilotinib alone and in combination with imatinib in patients that have progressed on imatinib in a population of patients with imatinib refractory and intolerant patients. There were rare responses, but stable disease was observed in grater than 50% of patients.

This study is aiming to treat patients with advanced or metastatic GIST who have disease progression on imatinib dose escalated up to 600 mg or greater. The rationale for exploring Nilotinib in this setting is to determine if it has therapeutic efficacy, with potentially less toxicity than the current standard of care for second line therapy. In addition, since it is not uncommon to see progression of some metastatic GIST lesions on imatinib, while others remain controlled, adding nilotinib may treat the progressing lesions while imatinib continues to control the areas without disease progression. ;

Study Design

Allocation: Randomized, Endpoint Classification: Efficacy Study, Intervention Model: Parallel Assignment, Masking: Open Label, Primary Purpose: Treatment

Related Conditions & MeSH terms

• Gastrointestinal Stromal Tumors
• GIST
• Metastatic Disease
• Neoplasm Metastasis

• NCT number: NCT01089595
• Study type: Interventional
• Source: Fox Chase Cancer Center
• Status: Terminated
• Phase: Phase 2
• Start date: February 2009
• Completion date: March 2012