SMARCA4 and breast neoplasm: Immunohistochemistry studies of primary breast tumors showedelevated BRG1 expression in 35% to nearly 100% of samples [60–62], cementing theconclusion that elevated BRG1 expression correlates with breast tumorigenesis.Importantly, high BRG1 expression was correlated with poor overall patientsurvival [60–62], raisingthe possibility that BRG1 could be used as a prognostic indicator.