CCND1 and mantle cell lymphoma: Ribera-Cortada et al. [25] correlated the terminal B cell differentiation phenotype in 60 MCL with SOX11-expression: monotypic plasma cells and lymphoid cells with plasmacytic differentiation expressing cyclin D1 were observed in 7 (37 %) SOX11-negative but in none of 41 SOX11-positive MCL.