Inclusion Criteria: Subjects must meet all of the following inclusion criteria to be eligible:

• Ph+ CML in Chronic Phase with T315I mutation
• 18 years or older
• The subject has an ECOG performance status of ≤ 2.
• Adequate organ function as indicated by the following laboratory assessments performed within 14 days prior to the first dose of study drug Hepatic: Serum bilirubin ≤1.5 times upper limit (X ULN) of normal unless due to leukemic involvement or Gilbert's syndrome; aspartate aminotransferase or alanine aminotransferase ≤ 2.5 X ULN; alkaline phosphatase ≤ 2.5 X ULN Renal: Serum creatinine ≤ 1.5 X ULN or 24 hour creatinine clearance ≥ 50 mL/min
• Female subjects of childbearing potential must have a negative serum or urine beta-human chorionic gonadotropin pregnancy test within 14 days prior to the start of study drug
• Sexually active subjects who are fertile must agree to use an effective barrier method of contraception while on therapy and for 30 days following discontinuation of study drug. Non-fertile subjects or those not sexually active are also eligible.
• The subject is capable of understanding and complying with the protocol and has signed the informed consent document.

Exclusion Criteria: Subjects presenting with any of the following will not qualify for entry into the study:

• Subject has received chemotherapy or a TKI ≤ 7 days, investigational agent ≤ 14 days, or radiotherapy ≤ 28 days prior to the start of study drug or has not recovered from the acute toxicities associated with any prior treatments including approved therapies, investigational agents, and prior stem cell or bone marrow transplant. The following exceptions apply: i) Hydroxyurea is permitted at any time prior to study enrollment; ii) Glucocorticoids (natural or synthetic) are allowed up to 48 hours prior to the start of the study drug (with the exception of steroids for pre-medication and topical/nasal steroid use which are allowed at any time)
• The subject has AP or BP-CML
• Received immunosuppressive therapy ≤ 28 days prior to the first dose of study drug
• NY Heart Association class III or IV heart disease, active ischemia or any other uncontrolled cardiac condition such as angina pectoris, clinically significant cardiac arrhythmia requiring therapy, uncontrolled hypertension or congestive heart failure
• Myocardial infarction within 3 months of the start of study drug
• Active, uncontrolled systemic infection considered opportunistic, life threatening, or clinically significant
• Any other severe concurrent disease and/or uncontrolled medical conditions, which in the judgment of the investigator, could predispose subjects to unacceptable safety risks or compromise compliance with the protocol
• Human immunodeficiency virus positive
• If female, the subject is pregnant or lactating
• Allergic or hypersensitive to any component of the investigational drug product