However, a study showed that matrix/macrophage expression of Lcn-2 was associated with tumor onset, lung metastasis, and recurrence, whereas FPN1 was not by analyzing the expression profiles of lipocalin-2 (Lcn-2) and FPN1 through a model of T-oncogene (PyMT) breast cancer in spontaneous polymerases and mining publicly available TCGA and GEO database from gene expression synthesis (95). Here, SLC40A1 is linked to breast cancer.