ABSTRACT
AIM: To study the efficacy and safety of siponimod in patients with secondary progressive multiple sclerosis (SPMS) in the Russian population of the EXPAND study. MATERIAL AND METHODS: Ninety-four patients with SPMS from Russia were included in the analysis. Sixty-three patients received siponimod and 31 patients received placebo. The primary endpoint of the study was time to 3-month confirmed disability progression (3m-CDP) events, other clinical and radiological endpoints were also evaluated. RESULTS: The siponimod group showed a 54% reduction in the risk of 3m-CDP compared with the placebo group (p=0.0334). Secondary endpoints also showed the advantage of the drug over placebo. In the siponimod group, mild adverse events associated with impaired liver function, as well as arterial hypertension, were more common. No patient left the study due to an adverse event. CONCLUSION: The use of siponimod in patients with SPMS in the Russian population reduced the risk of disability progression. Siponimod showed a favorable safety profile.