TFPI and breast carcinoma: Among the cell lines tested, TFPI expression was detected in the following high to low order; Sum102 > MDA-MB-231 > MCF-7 > SK-BR-3 > BT-474 > ZR-75-1 > Sum149, which is comparable to data from Kao and co-workers [28] when we extracted the TFPI expression results from their publicly available data file of gene expression profiles of different breast cancer cell lines.