If mutation tests show that the patient is eligible and they choose to participate in the study, they will be randomized and receive imatinib/Interferon. Each imatinib pill will be 100mg and the participants will take 4 pills once daily (400mg).Participants randomized to the interferon arm will receive Interferon 1500wiu/m2 d1-5 for 4 weeks followed by 900wiu IH TIW for 11 months. The following study procedures will also be performed at routine intervals throughout the course of treatment including blood tests, medical history updates, physical exams and Chest/Abdomen/Pelvic CT examinations.Participants will be on this study for one year and then be followed up to relapse or distal metastasis.
