The platelet count and serum C-reactive protein level at diagnosis has been reported to be independent influencing factors of PFS and OS in patients with diffuse large B-cell lymphoma (DLBCL).[39–43] Among the prognostic factors for MCL, another factor in addition to Ki-67 that was closely associated with the biological characteristics of the tumor cells was high SOX11 expression. The gene discussed is SOX11; the disease is mantle cell lymphoma.