To achieve this, we extracted data profile from (GSE57947) dataset that represents a Patient Derived Xenograft (PDX) model established to identify genes that are associated with BM micro metastatic disease in breast cancer. Using our own in-house filtration method, we compared the gene expression levels of mammaglobin-1 in mice with primary tumors only compared to mice with BM metastasis as well as with splenic metastasis. Here, SCGB2A2 is linked to breast carcinoma.