BCL6, KLF2, and ZFP36L1 are preferentially mutated in HBsAg⁺DLBCLs. (A) Diagram showing mutations identified in the BCL6 locus. Domains of BCL6 and a region containing translocation breakpoints identified in this report are indicated by horizontal lines. (B) Mutations identified in KLF2. (C) Mutations identified in ZFP36L1. BTB/POZ, broad-complex, Tramtrack, and bric a brac/poxvirus and zinc finger (ZF).