TF and Alzheimer disease: In the discovery set, the AUROCs for 162 patients with AD versus 135 patients with CAD for sFe, TF, and TIBC were 0.67 (95% CI: 0.60, 0.73), 0.63 (95% CI: 0.56, 0.69), and 0.59 (95% CI: 0.51, 0.87), respectively (Figure 2(a)).