Notably, sensitivity, specificity, PPV, and NPV of string sign for the CEA cut-off level of CEA of >192 ng/mL for differentiating mucinous from non-mucinous pancreatic cysts according to the international guidelines in the entire cohort were 74.4%, 94.4%, 96.7% and 63% (Table 3). The gene discussed is CEACAM5; the disease is Pancreatic cysts.