Two-dimensional scatter plots of apoA2-ATQ/AT and CA19-9 in patients with pancreatic cancer and healthy individuals are shown in Fig. 3C. Of the 106 healthy individuals, 97 (91.5%, 95% CI 84.6–95.5%) were double-negative for apoA2-ATQ/AT (≥ 59.5 μg/mL) and CA19-9 (≤ 37 U/mL) (Fig. 3C). Here, APOA2 is linked to pancreatic neoplasm.