SLC7A11 and Alzheimer disease: The ROC analysis of the combined values of pLG72 levels and the ΔCT values of SLC7A11 mRNA for all AD patients vs healthy controls determined an optimal cutoff value (21.721) with a favorable sensitivity (0.881) and a modest specificity (0.738) (AUC = 0.882) (Table 2; Figure 2).