GPT and neoplasm: Multivariate logistic regression analysis identified that age ≤ 62 years old (p < 0.001), male sex (p = 0.011), tumor size ≥4.0 cm (p < 0.001), alanine aminotransferase level (ALT) < 125 U/L (p < 0.001), and carbohydrate antigen (CA19–9) level ≥ 385 U/mL (p < 0.001) were independent risk factors for occult distant metastasis of PDAC.