Abbreviations: ABVD, adriamycin, bleomycin, vinblastine, and dacarbazine; CHOP, cyclophosphamide, hydroxydaunorubicin, vincristine, and prednisone; CR, complete response; DA-EPOCH, dose-adjusted etoposide, prednisone, vincristine, cyclophosphamide, and hydroxydaunorubicin; DLBCL, diffuse large B-cell lymphoma; NR, not reached; OS, overall survival; PBL, plasmablastic lymphoma; PD, progressive disease; PFS, progression-free survival; PR, partial response; SD, stable disease.