A Study of Intermittent Dosing Schedule of Imatinib in Patients With Tyrosine Kinase Inhibitor Refractory GISTs

A Study of Intermittent Dosing Schedule of Imatinib in Patients With Tyrosine Kinase Inhibitor Refractory GISTs

Gastrointestinal Stromal Tumor

Unknown

2

Start Date 01/01/2016

Age of Trial (yrs) 8.9

Gleevec-resistant

KIT/PDGFRA inhibitor

Block KIT

Specifically GIST and only GIST

AMC1601

Asan Medical Center

Min-Hee Ryu, MD, PhD 82-2-3010-5935 miniryu@amc.seoul.kr

Randomized

Oral

Detailed Description:

Patients will be randomly assigned to an imatinib arm with either intermittent or continuous dosing schedule with a ratio of 1:1 by using a computer-based system. Imatinib will be administered at a dose of 400 mg/day, once a day with food, in the form of 100-mg tablets. Patients assigned to the continuous dosing arm will receive imatinib without off-schedule, and those assigned to the intermittent dosing arm will received imatinib with one-week on/one-week off dosing schedule. Four weeks of study treatment is considered as one cycle for both continuous and intermittent dosing schedules.

In both arms, the imatinib treatment beyond multiple progressions defined by RECIST version 1.1 is permitted, unless treating physician decided that there is no clinical benefit with imatinib. Imatinib will be discontinued when unacceptable toxicity or patient's withdrawal of consent.