|Exclusion Criteria:||1) No other malignancy which required radiotherapy or systemic treatment within the past 5 years.|
2) Concurrent medical condition which may increase the risk of toxicity, including: a. Pleural or pericardial effusion of any grade.
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 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.
4) History of significant bleeding disorder unrelated to cancer, including: a. Diagnosed congenital bleeding disorders (e.g., von Willebrand's disease), b. Diagnosed acquired bleeding disorder within one year (e.g., acquired anti-factor VIII antibodies), c. Ongoing or recent (</= 3 months) significant gastrointestinal bleeding.
5) Concomitant Medications, any of the following should be considered for exclusion: a. Category I drugs that are generally accepted to have a risk of causing Torsades de Pointes including: (Patients must discontinue drug 7 days prior to starting dasatinib), I. quinidine, procainamide, disopyramide, II. amiodarone, sotalol, ibutilide, dofetilide, III. erythromycin, clarithromycin, IV. chlorpromazine, haloperidol, mesoridazine, thioridazine, pimozide V. cisapride, bepridil, droperidol, methadone, arsenic, chloroquine, domperidone, halofantrine, levomethadyl, pentamidine, sparfloxacin, lidoflazine.
6) Women who: a. are unwilling or unable to use an acceptable method to avoid pregnancy for the entire study period and for at least 4 weeks after cessation of study drug, or, b. have a positive pregnancy test at baseline, or, c. are pregnant or breastfeeding,
7) Prisoners or subjects who are compulsorily detained (involuntarily incarcerated) for treatment of either a psychiatric or physical (e.g., infectious) illness
8) No active, untreated brain metastases. Patients with known brain metastases will be included if the brain metastases have been treated and stable for at least 3 months without the use of steroid
9) HIV-positive patients on combination antiretroviral therapy are ineligible because of the potential for pharmacokinetic interactions with dasatinib. In addition, these patients are at increased risk of lethal infections when treated with marrow-suppressive therapy. Appropriate studies will be undertaken in patients receiving combination antiretroviral therapy when indicated.
10) Patients with melanoma harboring BRAF mutation. If BRAF mutation is not known at the time of screening, patients will still be eligible