Overall survival excluding Burkitt-like and plasmablastic subtypes. (A) Comparison of overall survival of patients in the lower 10% and upper 90% of HLA-DRA expression, excluding those with plasmablastic or Burkitt-like histology, demonstrating a significant difference in survival. (B) Comparison of overall survival of patients in 4 quantiles of HLA-DRA expression, excluding those with plasmablastic or Burkitt-like histology, again demonstrating a significant difference in survival.