Additionally, higher SLCO3A1 expression has been found in several cancer types compared with normal or benign tissue, including, hormone-resistant metastases versus untreated prostate cancers, in primary and metastatic liver cancer versus normal liver, in aneurysmal bone cysts versus osteosarcomas and in BC cell lines versus non-malignant breast cell lines [19, 24, 40, 48]. This evidence concerns the gene SLCO3A1 and breast cancer.