Efficacy and Safety of Fingolimod (FTY720) in Patients With Relapsing-remitting Multiple Sclerosis

ARR is the average number of relapses in a year calculated by negative binomial regression as the sum of confirmed relapses of all patients in the group divided by the sum of the number of days on study of all patients in the group and multiplied by 365.25.

A relapse was defined as the appearance of a new neurological abnormality or worsening of previously stable or improving pre-existing neurological abnormality, separated by at least 30 days from onset of a preceding clinical demyelinating event. The abnormality must be present for at least 24 hours and occur in the absence of fever (<37.5C) or known infection. A relapse must be confirmed by the Independent Evaluating Physician (examining neurologist).

ARR estimates were calculated from a negative binomial regression model adjusted for treatment, pooled center, number of relapses in the previous 2 years prior to enrollment, and Baseline expanded disability status scale (EDSS).

ARR is the average number of relapses in a year calculated by negative binomial regression as the sum of confirmed relapses of all patients in the group divided by the sum of the number of days on study of all patients in the group and multiplied by 365.25.

A relapse was defined as the appearance of a new neurological abnormality or worsening of previously stable or improving pre-existing neurological abnormality, separated by at least 30 days from onset of a preceding clinical demyelinating event. The abnormality must be present for at least 24 hours and occur in the absence of fever (<37.5C) or known infection. A relapse must be confirmed by the Independent Evaluating Physician (examining neurologist).

ARR estimates were calculated from a negative binomial regression model adjusted for treatment, pooled center, number of relapses in the previous 2 years prior to enrollment, and Baseline expanded disability status scale (EDSS).

Brain volume was measured using magnetic resonance imaging (MRI). Change from Baseline in brain volume is expressed as a percentage of the Baseline brain volume.

Inflammatory disease activity was assessed by magnetic resonance imaging (MRI) measurement of the number of new or newly enlarged T2 lesions, by year.

Inflammatory disease activity was assessed by magnetic resonance imaging (MRI) measurement of the number of gadolinium-enhanced T1 lesions.

Change from Baseline in lesion volume was measured by MRI for T2 lesions and for T1 hypointense lesions.

Disability progression was defined using the following criteria: One point increase from baseline in patients with Baseline Expanded Disability Status Scale (EDSS) score from 0 to 5.0; or half a point increase from Baseline in patients with Baseline EDSS score of 5.5 or above. A 3-month confirmed disability progression was defined as a 3-month sustained increase from Baseline in EDSS score. The EDSS quantifies disability in multiple sclerosis in 8 functional systems; the score ranges from 0 (normal) to 10 (death due to MS). Progression curves were generated by the Kaplan-Meier method.

Disability progression was defined using the following criteria: One point increase from baseline in patients with Baseline Expanded Disability Status Scale (EDSS) score from 0 to 5.0; or half a point increase from Baseline in patients with Baseline EDSS score of 5.5 or above. A 6-month confirmed disability progression was defined as a 6-month sustained increase from Baseline in EDSS score. The EDSS quantifies disability in multiple sclerosis in 8 functional systems; the score ranges from 0 (normal) to 10 (death due to MS). Progression curves were generated by the Kaplan-Meier method.

Estimates of the percentage of participants relapse-free at 24 months were generated from Kaplan-Meier curves of the time to first relapse. A relapse was defined as the appearance of a new neurological abnormality or worsening of previously stable or improving pre-existing neurological abnormality, separated by at least 30 days from onset of a preceding clinical demyelinating event. The abnormality must be present for at least 24 hours and occur in the absence of fever (<37.5C) or infection. A relapse was confirmed by an Independent Evaluating Physician.

Estimates of the percentage of participants relapse-free at end of study were generated from Kaplan-Meier curves of the time to first relapse. A relapse was defined as the appearance of a new neurological abnormality or worsening of previously stable or improving pre-existing neurological abnormality, separated by at least 30 days from onset of a preceding clinical demyelinating event. The abnormality must be present for at least 24 hours and occur in the absence of fever (<37.5C) or infection. A relapse was confirmed by an Independent Evaluating Physician.

The Multiple Sclerosis Functional Composite (MSFC) is a multidimensional clinical outcome measure that includes quantitative tests of leg function/ambulation (Timed 25-Foot Walk), arm function (9-Hole Peg Test), and cognitive function (Paced Auditory Serial Addition Test). The overall MSFC z-score as an average of the three standardized scores derived using baseline data pooled over each treatment arm as reference population. Higher scores reflect better neurological function and a positive change from Baseline indicates improvement.