f. Severe valvular heart disease g. Baseline Left ventricular ejection fraction (LVEF) below the lower limit of normal (LLN) or <55% measured by echocardiography or institution's LLN for MUGA h. Atrial fibrillation with a ventricular rate >100 bpm on ECG at rest i. QTcF >450ms or other factors that increase the risk of QT prolongation