GRIA4 and Familial adenomatous polyposis: Promoters that were differentially methylated in all LS tumor groups but not in FAP adenoma vs. FAP normal or LS normal vs. FAP normal comparisons were ADHFE1, EYA4, FLI1, GRIA4, KLF17, LBX2, PREX2, RIMS1, and ZNF528.