STAT3 and anaplastic large cell lymphoma: Lower pY-STAT3 expression was associated with negative CD3 (37.7% and 75.4% mean pSTAT3 expression, p < 0.001, t-test), CD5 (42.8% and 68.4%, p = 0.03, t-test), CD7 (45.2% and 64.6%, p = 0.01) and positive CD30 phenotype (Figure S4A) designating ALCL immunophenotype as reported in Figure 2 [30].