The classification efficiency (i.e., the proportion of ovarian cancer recurrence cases correctly identified) by measuring pyruvate kinase M1/2, enolase 1, glyceraldehyde-3-phosphate dehydrogenase, and aldolase fructose-bisphosphate A, individually, and in combination, was assessed by ROC curve analysis (Figure 10E–I). Here, GAPDH is linked to ovarian carcinoma.