The mRNA expression of GCG was significantly associated with history of colon polyps (yes vs. no: OR = 1.707, 95% confidence interval (CI) = 1.190-2.459, p = 0.004); however, the mRNA expression of GCG was not found to be significantly associated with the other clinical variables except for the variable “history of colon polyps.” Here, GCG is linked to intestinal disorder.