In the most recent study examining association between GWAS identified MS susceptibility loci and efficacy of GA therapy in a Russian population of 296 RRMS patients, five SNPs were associated by themselves with event-free phenotype: EOMES rs2371108 T allele, CLEC16A rs6498169 A allele, IL22RA2 rs202573 GG genotype, PVT1 rs2114358 A allele, and HLA-DBR1*4 (Pf = 0.032-0.00092). The gene discussed is PVT1; the disease is myeloid sarcoma.