继发睾丸DLBCL患者的PFS和OS较原发睾丸DLBCL患者更差。ECOG评分≥2分、Ann Arbor分期III~IV期、LDH升高和多结外受累为睾丸DLBCL的不良预后因素。PIM1、MYD88、CD79B、CREBBP、KMT2D、ATM、BTG2是睾丸DLBCL中常见的突变,KMT2D突变患者预后不佳。. The gene discussed is BTG2; the disease is diffuse large B-cell lymphoma.