[The first russian experience of use of siponimod in real clinical practice].

Despite significant success in the treatment of multiple sclerosis achieved in the recent years, the issues of therapy for progressive forms of the disease are far from being resolved. The first medication with proven efficiency at SPMS is the oral selective sphingosine 1 phosphate (S1P) receptor modulator siponimod. Before the registration of siponimod in Russia, Novartis company organized a «Managed access program to enable siponimod in patients with secondary progressive multiple sclerosis without satisfactory alternative therapy». For the period from September 2020 to May 2021, 10 patients with SPMS with exacerbations were included in the programme by RAS. The results of the treatment of the patients under the programme were similar to the results of previously controlled studies. The medication was well tolerated and the expected side effects (mainly lymphopenia and Elevated transaminases) were not more severe than moderate and were stopped by temporary cancel of the current treatment or concomitant therapy. During 1 year of therapy, the stabilization of condition of all patients and positive dynamics was noticed, including a decrease in the EDSS score in 44% of patients. Despite the limited number of patients and time of observation, the safety and efficacy of siponimod in patients with SPMS are quite high. The use of the medication in routine clinical practice does not require extraordinary methods of observation and control, but nevertheless includes genetic examination before the prescription of therapy, regular monitoring of clinical blood and biochemical parameters.