We aimed to analyze efficacy and safety of O plus R-CHOP-like (O+R-CHOP) for untreated non-germinal center B-cell-like diffuse large B-cell lymphoma (non-GCB DLBCL) patients (pts)....Most had extranodal involvement (72.7%) and MYC/BCL2 double expression lymphoma (DEL, 54.5%)....By subgroup analysis of 11 pts after induction stage, pts with DEL had better mRR (100.0% vs. 75.0%) than non-DEL...pts with DEL and extranodal involvement had CRR of 100.0% and 75.0%, respectively...