|Exclusion Criteria:||1) NYHA cardiac class 3-4 heart disease.|
2) Cardiac disease including: Uncontrolled angina within 3 months. Diagnosed or suspected congenital long QT syndrome; Any history of clinically significant ventricular arrhythmias (eg, ventricular tachycardia, ventricular fibrillation, or Torsades de pointes); Prolonged QTc interval on pre-entry electrocardiogram (> 470 msec) on both the Fridericia and Bazett's correction; Uncontrolled hypertension (defined for this protocol as sustained systolic BP >/=150 and diastolic >/=100); Patients currently taking drugs that are generally accepted to have a risk of causing Torsades de Pointes.
3) Serious uncontrolled medical disorder or uncontrolled active systemic infection or current unstable or decompensated respiratory or cardiac conditions which makes it undesirable or unsafe for the patient to participate in the study.
4) Patients with known, clinically significant pericardial or pleural effusion.
5) History of significant bleeding disorder unrelated to cancer, including diagnosed congenital bleeding disorders (e.g., von Willebrand's disease), or diagnosed acquired bleeding disorders within one year (e.g., acquired anti-factor VIII antibodies).
6) Subject is receiving potent inhibitors of CYP3A4; for such medications, a wash-out period of >/= 7 days is required prior to starting dasatinib unless discontinuation or substitution of such an inhibitor is not in the best interest of the patient as determined by the investigator. These include the following medications: itraconazole, ketoconazole, miconazole, voriconazole; amprenavir, atazanavir, fosamprenavir, indinavir, nelfinavir, ritonavir; ciprofloxacin, clarithromycin, diclofenac, doxycycline, enoxacin, isoniazid, ketamine, nefazodone, nicardipine, propofol, quinidine, telithromycin. In instances where use of these agents is felt to be required for the best management of the patients, inclusion of such a patients should be discussed with PI and the rationale documented.
7) Females who are pregnant or are currently breastfeeding.
8) Patients that are eligible (including having available donor) and willing to receive an allogeneic stem cell transplant within 4 weeks.