Statistically significant differences in apoAII-ATQ/AT concentration relative to healthy controls were observed in patients with endocrine neoplasms (P = 1.88 × 10−3), IPMNs (P = 1.94 × 10−9), chronic pancreatitis (P = 3.22 × 10−6), and others (P = 2.12 × 10−2). The gene discussed is APOA2; the disease is chronic pancreatitis.