- History of uncontrolled or labile hypertension, defined as blood pressure greater than 150/100mmHg (National Cancer Institute (NCI) Common Terminology Criteria for Adverse Events (CTCAE) v.3.0 grade greater than or equal to 2), systolic blood pressure greater than 180 mm Hg if diastolic blood pressure less than 90 mm Hg, or diastolic blood pressure greater than 90 mm Hg, on at least 2 repeated determinations on separate days within 3 months prior to study enrollment. Patients who have medication controlled hypertension are eligible for the study.