3. Cardiac Symptoms; any of the following should be considered for exclusion: a. Uncontrolled angina, congestive heart failure or MI within (6 months), b. Diagnosed congenital long QT syndrome, c. Any history of clinically significant ventricular arrhythmias (such as ventricular tachycardia, ventricular fibrillation, or Torsades de pointes), d. Prolonged corrected QT interval (QTc) interval on pre-entry electrocardiogram (> 480 msec) [or > 500 msec for patients with a bundle branch block]), e. Subjects with hypokalemia or hypomagnesemia if it cannot be corrected prior to dasatinib administration.