A multilocus analysis of mitochondrial and nucleargenome variants allowed us to replicate the data that were previously obtainedfor other populations on association of rs2107538 of the gene CCL5[36], rs1077667 of the geneTNFSF14 [37], andrs2243250 of the gene IL4 [38, 39] with the riskof MS in ethnic Russians. This evidence concerns the gene IL4 and myeloid sarcoma.