This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Blood, Subject name: Medicine
Drug of choice for CML is? 
Select and explain. 
A. Imatinib, B. Hydroxurea, C. Infliximab, D. IFN
A: Imatinib
Answer: A: Imatinib 
Explanation: ANSWER: (A) ImatinibREF: Harrison s 17th ed, CMDT 2008 p. 444The drug treatment of choice for CML when Allogenic SCT (stem cell therapy) is not feasible is IMATINIBIFN-tz used to be the drug treatment of choice for CML when IMATINIB was not available