<qa>  What is the name of the treatment that repeats every 28 days?Patients receive paclitaxel intravenously IV on days 3, 10, and 17 and imatinib mesylate orally PO once daily QD on days 1-4, 8-11, and 15-18. Treatment repeats every 28 days for 4-6 courses in the absence of disease progression or unacceptable toxicity. 