Patients will be enrolled in cohorts of 3 patients. The first cohort of 3 patients will receive 30 mg BIW. Decisions regarding cohort escalation will be based upon the clinical experience in Cycle 1 (first 28 days) only. For a given cohort, if 1 patient enrolled in the cohort experiences a dose limiting toxicity (DLT) within 28 days of the first dose, the cohort will be expanded to 6 patients.