STING1 and mantle cell lymphoma: Interestingly, a recent study reported on the absence of the expression of STING (a part of the cGAS-STING, which are major components of the cytosolic DNA sensing pathway) specifically in B-cell non-Hodgkin lymphomas, including various small B-cell lymphomas like FL, MCL, MZL and SLL, but not in T- and NK-cell lymphomas [65].