As expected, the total TFPI (α + β), TFPIα and TFPIβ mRNA expression levels in breast tumors were highly correlated (r = 0.82 to 0.91, P <0.001), and did also correlate significantly to TF expression (r = 0.37-0.50, P <0.001). The gene discussed is TF; the disease is breast neoplasm.