SAMHD1 and mantle cell lymphoma: Analyses of SAMHD1 histone marks and DNA methylation together with SAMHD1 messenger RNA expression in 5 published MCL cases (2 cMCL and 3 nnMCL) in comparison with normal B cells43,44 did not further reveal evidence of epigenetic regulation of differential SAMHD1 expression in MCL (supplemental Figure 10E).