Study to Evaluate the QTC Interval in Healthy Volunteers Dosed With Dexpramipexole (QTC = Electrocardiogram (ECG) Interval Measured From the Onset of the QRS Complex to the End of the T Wave Corrected for Heart Rate)

Inclusion Criteria: * Aged 18 to 60 years old inclusive on Day 1. * Subjects who, in the opinion of the Investigator, are healthy as determined by pre study medical history, physical examination, and 12 lead ECG. * Male subjects and female subjects of childbearing potential must practice effective contraception (per protocol specifications). * Normal systemic blood pressure defined as a systolic blood pressure of 90 to 140 mmHg and a diastolic blood pressure of 50 to 90 mmHg. Exclusion Criteria: * History of cardiovascular disease (e.g., hypertension, arrhythmia, heart failure, Long QT Syndrome, or other conditions/diseases causing prolongation of the QT/QTc interval), in the opinion of the Investigator. * A prolongation of QT/QTc interval (e.g., repeated demonstration of a QT/QTc interval \>450 ms before study treatment administration. * Clinically important abnormalities in resting ECG that may interfere with the interpretation of QTc interval changes at screening, check-in, or pre-dose on Day -1 of the first treatment period. * Other medically significant illness. * Clinically significant abnormal laboratory values. * Pregnant women or women breastfeeding.