A multicenter, clinical trial, randomized open label and parallel study has been done since April 1993 on the Chronic Myelogenous Leukemia patients treated with either Interferon (I) + Hydroxyurea (HU) or Interferon + low dose Ara-C (C). The countries who involve on this study are Indonesia, China, India, Philippines, Singapore, South Korea and Taiwan. The dose of Interferon is 5 MU 5 days a we…