Although the MDA-MB-361 cell line shares only one common feature with the other two cell lines (positive hormone receptor status) and has many distinct features (isolated originally from a brain metastasis of a 40 years old patient, moderate in vitro invasiveness, Her-2/neu overexpression, and expression of WNT7H + oncogene), it still tends to be closer to the luminal epithelial-like MCF7 and T47D than to the mesenchymal-like breast cancer cell lines. This evidence concerns the gene NR4A1 and breast cancer.