SMARCB1 and neoplasm: Tumor cells were negative for epithelial markers AE1/AE3 and CAM5.2, and also negative for p40, NUT, chromogranin, desmin, NKX2.2, S100, SOX10, HMB45, GATA3, CD45 (LCA), CD3, and CD20, with intact INI1 and BRG1 nuclear expression.