BCL2 and carcinoma: Because KIT and BCL2 are often highly expressed in POU2F3-positive tuft cell-like carcinomas [17, 19, 22], the same feature in WTs could suggest that non-neoplastic POU2F3-positive cells might express BCL2 and KIT via non-mutational, possibly epigenetic mechanisms that, in turn, might be smoking-related [43, 44].