STAT3 and primary cutaneous T-cell non-Hodgkin lymphoma: Cultured T cells were confirmed to express phosphorylated STAT3 (Tyr705) by western blot (Figure 5b), consistent with previous reports showing STAT3 tyrosine phosphorylation within the malignant CTCL T-cell population (Netchiporouk et al., 2014; Sommer et al., 2004).