16. QTc with Bazett's correction that is not measurable, or greater than or equal to 480 msec on screening electrocardiogram (ECG). (Note: If a patient has a QTc interval greater than or equal to 480 msec on screening ECG, the screen ECG may be repeated twice (at least 24 hours apart). The average QTc from the three screening ECGs must be less than 480 msec in order for the patient to be eligible for the study). Patients who are receiving a drug that has a risk of QTc prolongation are excluded if QTc is greater than or equal to 460 msec.