STAT5B and T-cell large granular lymphocyte leukemia: Preliminary results, for the remaining—very rare—LGLL groups (TCD4+-LGLL, Tαβ+DN-LGLL and CD56+ CLPD-NK), showed that the immunophenotype of the single STAT3/STAT5B-mutated population per group did not overlap with their WT counterpart (Figure S2).