Despite the approval of several new treatments for patients with B-cell lymphoma, there is still a large unmet need. Diffuse large B-cell lymphoma (DLBCL) and Follicular lymphoma (FLs) are the two most common B-cell lymphoma subtypes, accounting for approximately 50% of all cases. EZH2 heterozygous gain-of-function somatic driver mutations are frequently found in Germinal Center B cell (GCB) DLBCLs and FLs. An EZH2 inhibitor has shown durable responses in patients with relapsed or refractory …