GC and mature T-cell and NK-cell non-Hodgkin lymphoma: Our study, together with prior findings, expand the total number of PTCL samples analyzed for somatic mutations so that less common mutations identified in one study, such as γc K315E, may be exposed as recurrent, potentially critical mutations in the process of PTCL tumorigenesis and its relationship to normal T-cell biology to pave the way for the discovery and development of novel therapeutic targets.