“…Moreover, 45% of patients have trisomies involving chromosomes 3, 5, 7, 9, 11, 15, 19 and/or 21. The following secondary genetic changes are observed: monosomy of chromosomes 13, 14, 17 (15-50% of patients with MM), translocations involving the MYC gene: t (8,14); t (8,11)-in 15% of patients and in 10-40% of them-deletions including the genes: CDKN2C and FAM46C (1p), CD27 (12p), RB1 and DIS3 (13p), TRAF3 (14p), TP53 (17p). Moreover, in some patients (6-25%) mutations of the BRAF, KRAS and NRAS genes are observed, the products of which are involved in the MAPK signaling pathway, thus stimulating cell proliferation and survival [5].…”