APOBEC3B and breast carcinoma: To gain additional insights into the possible involvement of an E2F complex in A3B transcriptional repression, TCGA breast cancer RNA-seq data sets were used to identify 114 genes with expression profiles positively associating with A3B (Spearman’s rho ≥0.5; n = 1,097 RNA-seq data sets; Supplementary file 1).