The paper is the first research that associate circulating LMR or NLR with PD-1+ TILs in the tumor microenvironment of DLBCL; however, the result shows no correlation between LMR and PD-1+ TILs or between NLR and PD-1+ TILs. The gene discussed is PDCD1; the disease is diffuse large B-cell lymphoma.