STAT5B and T-cell large granular lymphocyte leukemia: In contrast, all the 3 Tγδ LGLL patients with STAT5B mutations are included in the group presenting CD56+, analogous to the CD56 expression observed in STAT5B mutated HSTCL patients35, and NKG2A+ phenotype and asymptomatic disease (P = n.s., the small number of mutated cases prevents a proper statistical assessment).