Interaction between fasting blood glucose and tumor embolus in predicting the postoperative prognosis of 4330 Chinese patients with gastrointestinal tract cancer.
2020
Objectives: We aimed to investigate the interaction between fasting blood glucose and tumor embolus, and the potential mediation effect of fasting blood glucose on tumor embolus in predicting gastrointestinal tract cancer-specific mortality risk postoperatively.
Methods and Results: 4330 patients were consecutively recruited between January 2000 and December 2010, with annual follow-up ending in December 2015. The median follow-up time was 48.6 months. Two optimal cutoff points for fasting blood glucose (6.11 and 11.69 mmol/L) were identified. Patients with fasting blood glucose 11.69 mmol/L and positive tumor embolus. The risk was highest for patients with fasting blood glucose >11.69 mmol/L and positive tumor embolus (adjusted HR: 11.91, 95% CI: 9.13 to 15.52). Using the Sobel-Goodman mediation test, the proportion of total effect conferred by tumor embolus that was mediated by fasting blood glucose was estimated to be 45.3%.
Conclusions: Our findings indicate a synergistic interaction between fasting blood glucose and tumor embolus in predicting the postoperative prognosis of gastrointestinal tract cancer.
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