This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Anti-Neoplastic Agents, Subject name: Pharmacology
[{'content': 'Imatinib mesylate is used in the treatment of: \nSelect and explain. \nA. GIST, B. Seminoma, C. MALT, D. Zollinger Ellison syndrome', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ref: Goodman tfr Gilhnan, The pharmacological basis of therapeutics, !2:" edition, Pg No. 1732-1734.Explanation:Imatinib mesylate is used in the treatment of:Chronic phase of CMLGIST- Gastrointestinal Stromal tumorChronic Myelomonocytic leukemiaHypereosinophilic syndromeDermatofibrosarcoma protruberance', 'role': 'assistant'}]