- Electrocardiography (ECG) safety criteria : The subject must have no ECG abnormalities that would, in the opinion of investigator, compromise subject safety, or significantly affect subject's ability to complete the trial. As such, the investigator will determine the clinical significance of any ECG abnormality and determine if a subject is precluded from entering the study. At Visit 1 (Screening and Run-in Visit), ECG safety criteria must be: QT interval corrected for heart rate (QTc) <450 microseconds (msec) or QTc <480 msec for patients with bundle branch block. The QTc is the QT interval corrected for heart rate according to either Bazett's formula (QTcB), Fridericia's formula (QTcF), or another method, machine or manual overread. The QTc should be based on single or averaged QTc values of triplicate ECGs obtained over a brief recording period. Investigators will be responsible for ensuring appropriate clinical interpretation of ECGs.