The IMSE 2 study with fingolimod
Data on the long-term safety and efficacy of fingolimod were reported from the IMSE 2 study (Mult Scler. 2018;24[S2]:696-7, Abstract P1228). Lead author Anna Fält, also of the Karolinska Institute, and her associates analyzed data for 1,634 patients who had been treated with fingolimod from June 2015 to September 2018.
Most patients were older than 30 years (79%), and those aged 30 and older were predominantly female (69%), had an RRMS diagnosis (88%), and been treated for a mean of about 3 years (37 months). A total of 829 were being treated with fingolimod at the time of the analysis, with 844 having discontinued treatment at some point. The main reason for discontinuing treatment with fingolimod was a lack of effect (42% of cases) or an adverse effect (34%). The IMSE 2 study authors reported in their abstract that most patients were switched to rituximab after discontinuing fingolimod.
The number of relapses per 1,000 patient-years was reduced by fingolimod treatment from 280 to 82, comparing before and during treatment for all age groups studied. Relapse rate dropped from 694 per 1,000 patient-years before treatment to 138 during treatment in patients aged 20 years or younger, from 454 to 122 in those aged 21-30 years, and from 257 to 72 in those older than 31 years.
After 1 year of treatment, improvements were seen in the health status of patients as measured by various scales, including the EDSS, MSSS, MSIS-29 Physical, and MSIS-29 Psychological. When the researchers analyzed data by age groups, significant improvements were seen in patients aged 21-30 years and older than 30 years.
Ninety nonserious and 62 serious adverse events were reported in fingolimod-treated patients during the time of analysis. Of the latter, 13 serious adverse events involved cardiac disorders, 12 neoplasms, and 10 infections and infestations.
Overall, the IMSE 2 study investigators said that fingolimod was generally tolerable and reduced disease activity in MS.
French experience with fingolimod: The VIRGILE study
Real-world data on the long-term safety and efficacy of fingolimod in France from the VIRGILE study were reported by Christine Lebrun-Frenay, MD, PhD, and her associates (Mult Scler. 2018;24[S2]:698-9, Abstract P1231).
Dr. Lebrun-Frenay of Pasteur 2 Hospital in Nice and her coauthors noted that VIRGILE study included patients starting treatment with fingolimod between January 2014 and February 2016. A total of 1,047 patients were included, and another 330 patients treated with natalizumab were included at the behest of the French health authorities.
The annualized relapse rate after 2 years of follow-up was 0.30 in the fingolimod group. Dr. Lebrun-Frenay and her colleagues noted: “The 3-year data from this interim analysis provide evidence for sustained efficacy of fingolimod.” Indeed, they report that almost 60% of patients did not relapse and 64% had no worsening of disease. On average, EDSS was stable during the 3-year follow-up period.
“Safety and tolerability profiles of fingolimod were in line with previous clinical experience, with lymphopenia being the most frequent AE [adverse event] reported,” they added.