In the training but not the validation set, IGK/LV SHMhigh patients had higher PD-1 expression in CD4+ T cells in GCB-DLBCL (P = 0.008, Fig. 5c) and higher AICDA mRNA in ABC-DLBCL (P = 0.047). The gene discussed is PDCD1; the disease is aneurysmal bone cyst.