In GSE14548 dataset, including a total of 34 stromal samples referring to stroma adjacent to normal mammary cells, DCIS or invasive ductal carcinoma (IDC) we found TGM2 was consistently over-expressed in tumor-associated stroma with respect to stroma associated with normal mammary cells (Figure S2A). The gene discussed is TGM2; the disease is ductal breast carcinoma in situ.