STAT3 and lymphoma: T/NK-NHL is a heterogeneous group of malignancies often associated with poor clinical outcomes, and each malignancy within this group is characterized by unique clinicopathologic features, while T cell receptor/NF/kB (TCR/NF/kB) signaling highly enriched and dysregulation of JAK/STAT pathway, specifically aberrant STAT3 activation, are the common feature among these lymphomas [324–326].