STAT3 and angioimmunoblastic T-cell lymphoma: Further post-hoc analysis showed that pY-STAT3 was shown to be more frequently phosphorylated in AITL (mean = 43.7%) and ALCL (ALK−: mean = 62.3%, ALK+: mean = 79.7%) patients compared to control lymph nodes (mean 12.6%; Figure 2).