Patient satisfaction with the study medication was assessed using the MSQ a 1-item global patient-rated scale. Patients were asked to respond on a 7-point scale, ranging from extremely dissatisfied (1) to extremely satisfied (7), to the following: "Overall, how satisfied are you with your current medication?". Positive change from baseline score indicates greater satisfaction with the medication. Estimates and p-value are obtained from baseline-adjusted repeated measures ANCOVA model with visit as a repeated effect: MSQ=baseline MSQ score+treatment+visit+treatment by visit interaction.

Full analysis set (FAS) included those patients in the intent to treat (ITT) analysis set who received at least 1 dose of study drug and had at least 1 post-baseline efficacy assessment. Treatment naïve patients do not have a MSQ score at baseline so are not included.

Convenience perception was measured by the 3 convenience items (items 4 to 6) within the validated TSQM-9. The responses to each of the 3 convenience items are reported on a 1-to-7 scale. The TSQM-9 convenience scale is computed, for each subject, by adding the 3 items loading on each response with the lowest possible total score (1*3 on the 3 items) subtracted from this composite score, and divided by the greatest possible score (3*7) minus the lowest possible score (3), i.e., 21-3=18. This provides a transformed score between 0 and 1 that was multiplied by 100. The final scale is 0 (Extremely Difficult/Inconvenient) to 100 (Extremely Easy/Convenient). If more than one item is missing, then the convenience scale was considered invalid for that patient. Estimates and p-value are obtained from baseline-adjusted repeated measures ANCOVA with treatment, visit, and Country/Geographical Region as main factors, visit by treatment as the interaction term, and baseline score as the covariate.

Full analysis set (FAS) included those patients in the intent to treat (ITT) analysis set who received at least 1 dose of study drug and had at least 1 post-baseline efficacy assessment. Treatment naïve patients do not have TSQM-9 convenience scores at baseline and therefore are not included.

MFIS is a modified form of the Fatigue Impact Scale based on items derived from interviews with MS patients concerning how fatigue impacts their lives. It is a structured, self-report questionnaire consisting of 21 items assessing the effects of fatigue. All 21 items are scaled 0 to 4, with higher scores indicating a greater impact of fatigue on patient's activities. The Total MFIS score ranges from 0 to 84, the Physical Subscale from 0 to 36, the Cognitive Subscale from 0 to 40, and the Psychosocial Subscale from 0 to 8. A score of 0 indicates fatigue has no impact on activities and the high-end score indicates fatigue has extreme impact on activities. Negative change from baseline values indicate improvement in the effects of fatigue. Estimates and p-values are obtained from baseline-adjusted repeated measures ANCOVA model with visit as a repeated effect: change from

Full analysis set (FAS). The participant was considered invalid if any of the items were missing.

The MHI consists of 18 items and provides an assessment of 4 subscales of mental health, including Anxiety (5 items), Depression (4 items), Behavioral control (4 items), and Positive Affect (4 items), and 1 Total Score. The subscales and Total Score for analyses range from 0 to 100, with 0 indicating not mentally healthy and 100 indicating superior mental health. Positive change from baseline scores indicate improved mental health. Estimates and p-values are obtained from baseline-adjusted repeated measures ANCOVA model with visit as a repeated effect: change from baseline MHI score=baseline MHI Total Score +treatment +visit +country/geographic region +treatment by visit interaction. If a participant skipped x items of y items, the scale was not computed: - MHI Total Score - 9 of 19 - Anxiety subscale - 2 of 5 - Depression subscale - 2 of 4 - Behavioral Control subscale - 2 of 4 - MHI Positive Affect subscale - 2 of 4

Full analysis set.

Depressive symptoms were measured by the BDI-II, a 21-item, self-reported rating inventory that measures characteristic attitudes and symptoms of depression. The BDI-II assesses mood, pessimism, sense of failure, self-dissatisfaction, guilt, punishment, self-dislike, self-accusation, suicidal ideas, sadness, crying, irritability, social withdrawal, body image, work difficulties, insomnia, fatigue, appetite, weight loss, bodily preoccupation, and loss of libido. Each of the 21 items is rated on a 4-point scale ranging from 0 to 3. BDI-II Total Score indicates the severity of depression and has a total range of 0 to 63. For those clinically diagnosed, scores from 0-13 represent minimal depressive symptoms, scores of 14-19 indicate mild depression, scores of 20-28 indicate moderate depression, and scores of 30-63 indicate severe depression. Negative change from baseline scores indicate improvement.

Full analysis set.

An adverse event (AE) is defined as any study-related event that represents a change (positive or negative) in frequency or severity from a baseline (prestudy) event (if any), regardless of the presence of causal relationship or medical significance. Treatment-emergent adverse events are defined as any adverse event with a start date on or after the first study dose date. The investigator determined relation to study drug. A severe AE is defined as an inability to carry out usual activities. A serious AE (SAE) is defined by federal regulation as any AE occurring at any dose that results in any of the following outcomes: death, life-threatening AE, hospitalization or prolongation of existing hospitalization, a persistent or significant disability/incapacity, or a congenital anomaly/birth defect. Although a subject may have had 2 or more adverse experiences the subject is counted only once in a category. The same subject may appear in different categories.

Safety population