PLCG1 and mature T-cell and NK-cell non-Hodgkin lymphoma: We had previously used qPCR for the PLCG1 gene analysis to identify 10/98 cases (10.2%) in this series (represented in black in the cluster) with the PLCG1-S345F mutation (6 AITL and 4 PTCL-NOS) [11].