H19 and digestive system neoplasm: However, in gastrointestinal tumors, our result showed that the expression of H19 in DM-negative group was 2.94-fold higher than in the DM-positive group (OR = 0.34, 95% CI = 0.15–0.78, P = 0.01); insufficient sample size was the possible reason for the different results in various cancers.