Cohort selected for capture sequencing. (A) Biopsies from de novo DLBCL or tFL with DLBCL morphology were selected for inclusion if they were break-apart positive (BA+) at the MYC locus using the Vysis and/or Dako FISH assays. Cases with no available FFPE tissue were excluded, leaving a total of 112 cases. (B) The FISH break-apart (BA) status of the 112 cases are summarized. Cases in red boxes represent those successfully assessed with the Dako assay. ND, not done.