Overview of the DLBCL genotype discovered in tumor gDNA. Case-level mutational profiles of 20 training (A) and 16 validation (B) DLBCL tumors genotyped on gDNA from the tissue biopsy. Each column represents 1 tumor sample and each row represents 1 gene. The fraction of tumors with mutations in each gene is plotted (right). The number of mutations in a given tumor is plotted above the heat map. Cases are clustered according to the cell of origin.