MRI outcomes | Adjusted mean number (95% CI) | Between-treatment comparison | |||
Fingolimod N=107 | IFN β-1a N=107 | Rate ratio (95% CI) | Rate reduction (%) | P value | |
Annualised rate of new/enlargingT2 lesions (per patient per year)* | n=106 4.39 (3.617 to 5.336) | n=102 9.27 (7.661 to 11.214) | 0.47 (0.361 to 0.622) | 52.6 | <0.001 |
No. of Gd+ T1 lesions per scan† | n=106 0.44 (0.313 to 0.608) | n=101 1.28 (0.934 to 1.758) | 0.34 (0.215 to 0.540) | 66.0 | <0.001 |
Annualised rate of new T1 hypointense lesions (per patient per year)‡ | n=107 4.50 (3.468 to 5.828) | n=96 12.10 (9.242 to 15.830) | 0.37 (0.255 to 0.542) | 62.8 | <0.001 |
No. of CUA lesions per scan§¶ | n=104 2.40 (1.850 to 3.100) | n=98 6.09 (4.702 to 7.881) | 0.39 (0.273 to 0.567) | 60.7 | <0.001 |
EOS is defined as the last assessment taken on or before the final study phase visit date. n, number of patients included in each analysis.
*Obtained from fitting a negative binomial regression model adjusted for treatment, region, pubertal status (the stratification factor in IVRS) and baseline T2 lesion number (offset: time on study).
†Obtained from fitting a negative binomial regression model with the cumulative number of Gd+ T1 lesions on all scheduled post-baseline MRI scans during the study as the response variable, adjusted for treatment, region, pubertal status (the stratification factor in IVRS) and baseline number of Gd+ T1 lesions (offset: number of MRI scans).
‡Obtained from fitting a negative binomial regression model with cumulative number of new T1 hypointense lesions adjusted for treatment, region and pubertal status (the stratification factor in IVRS) (offset: time on study).
§Obtained from fitting a negative binomial regression model adjusted for treatment, region, pubertal status (the stratification factor in IVRS), baseline number of Gd+ T1 lesions and baseline number of T2 lesions.
¶CUA lesion count is defined as Gd+ lesions plus new/newly enlarging T2 lesions not associated with Gd enhancement for scans performed after Gd administration, or only new/newly enlarging T2 lesions for scans done without contrast. CUA lesions were measured from 6 months onwards.
CUA, combined unique active; EOS, end of the study; FAS, full analysis set; Gd+, gadolinium-enhancing; IFN, interferon; IVRS, interactive voice response system.