GATA3 and mature T-cell and NK-cell non-Hodgkin lymphoma: The contrasting genetic landscape observed in “GATA-3 PTCL” and “T-bet PTCL” provides further evidence that these are truly distinct PTCL subtypes, and should be classified as such, although the current WHO and ICC classifications view the current evidence as insufficient for such a subclassification (4, 40, 41).