Abstract
Diffuse large B-cell lymphoma (DLBCL) is a heterogeneous group of aggressive lymphomas driven by distinct biological pathways. Although historically divided into two major subtypes on the basis of putative cell of origin, detailed genomic analyses have revealed additional classifications with prognostic implications. Additionally, the lymphoma microenvironment adds a layer of complexity distinct from genetic subclassifications and influences disease trajectory and response to therapies. Herein, we review the emerging roles of immune-based therapies to address this complex interplay between intrinsic genetic drivers and the surrounding tumor microenvironment in DLBCL.