APOA2 and familial pancreatic carcinoma: AUC values of CA19–9 and apoAII-ATQ/AT as single biomarkers to distinguish patients with early stage pancreatic cancer (stage-I/II) were 0.783 [95% confidence interval (95% CI), 0.699–0.855], and 0.809 (95% CI, 0.748–0.867), respectively (Fig. 5C,D).