Besides, according to several large-scale genetics-based classification of DLBCL subtype articles, PIM1 mutation was less frequent in GCB DLBCL (Schmitz et al. 2018; Chapuy et al. 2018; Lacy et al. 2020; Wright et al. 2020; Reddy et al. 2017). This evidence concerns the gene PIM1 and diffuse large B-cell lymphoma.