Chronic Myelogenous Leukemia or Philadelphia Chromosome Positive Acute Lymphoblastic Leukemic Study

"Tablets, Oral, The dosing ranges from 50mg to a total of 240mg daily with the following 3 schedules:~* 5 days on, 2 days off~* 6 days on, 1 day off~* Continuous daily dosing~Once Daily (QD) or Twice Daily (BID) dosing, Subjects will be treated until progression of disease despite escalation/reductions of dose to the level deemed safe by available data, until intolerable/unacceptable toxicity or until subject withdrawal from the study or discontinuation of the study"