 12. QTc with Bazetts correction that is unmeasurable, or 480 msec on screening ECG. If a patient has QTc 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 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 460 msec 