GIPR and adenoma: Although the reasons for these differences are not immediately clear, the diverse analysis method employed (genome-wide methylation profiling in [13] vs. cloning-based BSP in the current work) and, more importantly, the distinct approach to sample stratification method (GIPR+/gsp− vs. GIPR−/gsp+ adenomas in [13], while GIPR+ vs. GIPR− in the current work) could account for such disparities.