CBR2 nuclear expression was positively correlated with histological type (rs = 0.147, p = 0.0014) and ER/PR status (rs = 0.173, p = 0.0002, rs = 0.121, p = 0.0087) and negatively correlated with tumour grade (rs = −0.170, p = 0.0002). This evidence concerns the gene ESR1 and neoplasm.