To determine the correlation between BRG1 expression and breast cancer patient survival, we retrieved 7 microarray datasets of human breast cancer (GSE1456, GSE2034, GSE2990, GSE3494, GSE12093, GSE11121 and Chin et al., combined N = 1339) profiled on Affymetrix HG-U133A platform [69–75] from Gene Expression Omnibus (GEO) (http://www.ncbi.nlm.nih.gov/geo) and European Bioinformatics Institute (http://www.ebi.ac.uk/arrayexpress for Chin et al, 2006 [75]). This evidence concerns the gene SMARCA4 and breast cancer.