SMARCA1 and neoplasm: The SWI/SNF complex is also increasingly recognized as a tumor-inhibiting complex whose subunit mutations occur in a variety of malignancies, including non-small-cell lung cancer, bladder transitional cell carcinoma, pancreatic cancer and breast cancer (Gui et al., 2011; Zhu et al., 2015; Takao et al., 2017; Naito et al., 2019).