Abstract
Diffuse large B cell lymphoma (DLBCL) is the most common histological subtype of
non-Hodgkin B cell lymphoma (NHL), and manifests highly heterogeneous genetic/phenotypic
characteristics as well as variable responses to conventional immunochemotherapy. Genetic profiling
of DLBCL patients has revealed highly recurrent mutations of epigenetic regulator genes such
as CREBBP, KMT2D, EZH2 and TET2. These mutations drive malignant transformation through
aberrant epigenetic programming of B-cells and may influence clinical outcomes. These and other
chromatin modifier genes also play critical roles in normal B-cells, as they undergo the various
phenotypic transitions characteristic of the humoral immune response. Many of these functions
have to do with impairing immune surveillance and may critically mediate resistance to immunotherapies.
In this review, we describe how epigenetic dysfunction induces lymphomagenesis
and discuss ways of implementing precision epigenetic therapies to reverse these immune resistant
phenotypes.
Keywords:
Diffuse large B cell lymphoma (DLBCL), epigenetics, cREBBP, eP300, kMT2D, eZH2, TET2, epigenetic heterogeneity.
Graphical Abstract
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