SMARCA4 and neoplasm: The results of the second immunohistochemistry (IHC) analysis revealed the following tumor cell characteristics: TTF-1 (8G7G3/1)(+), CK5/6(-), CK7(-), P40(-), Ki67 (Clone: SP6)(Li: 90%), CD56(-), CgA(-), SYN (weak +), Brg-1(-), INI-1(+), PCK(+), Claudin-4(-), SMARCA2(-), SOX2(-).