“…Subjects were diagnosed with T2DM according to the 1999 World Health Organization criteria. 25 Inclusion criterion of the participants was adult patients with T2DM aged between 18 and 86 years, who signed an informed consent form. The exclusion criteria were as follows: 1) T1DM, recent acute complications of diabetes, severe diabetic foot ulcers, previous amputation, endocrine diseases other than T2DM; 2) pancreatic cancer, acute and chronic pancreatitis, cancers of the gastrointestinal tract, hepatocellular cancer, cholangitis, cholestasis, obstructive jaundice, liver abscess, liver cirrhosis, and other hepatobiliary, pancreatic and gastrointestinal diseases, and so on; 3) non-diabetic kidney disease, hepatic dysfunction, severe renal failure; 4) acute stroke and coronary syndromes, heart failure, pulmonary disease, hematological diseases, thromboembolic disease; 5) ovarian cancer, endometriosis; 6) connective tissue disorders, autoimmune diseases, inflammatory diseases, infectious disease, presence of stressful conditions (recent surgery, trauma); 7) current pregnancy and lactation; 8) history of abundant alcohol intake; 9) administration of immunosuppressive drug, hormonal replacement therapy, systemic corticosteroids; 10) missing data for serum CA 19-9 and other demographic or clinical characteristic indicators; 13) serum CA 19-9 >37 U/mL.…”