- females lactating/breastfeeding; pregnant partners of male subjects; essential tremor or gait disturbance; - history of hereditary shorten QT syndrome; - malignancy or tumor (other than skin cancers); - history of GI disease that could interfere with absorption; - QTc ≥ 450 msec or ≤ 380 msec; - HbA1c ≥ 7%;