MUC2 and neoplasm: Finally, in a paper by Mathew et al. [10], immunostaining data were presented on five cases of EMPSGC in which INSM1, AR, BCL2, MUC2, MUC4, RB, Beta-Catenin and MCPyV were tested, of which INSM1 and MUC2 were positive with 4+ intensity, and MUC4 showed 2+/3+ staining mainly at the periphery of the tumor.