CpG IslandsMicrosatellite InstabilityDNA MethylationProto-Oncogene Proteins B-rafPhenotypeColorectal NeoplasmsLong Interspersed Nucleotide Elementsras ProteinsGenes, p16Epigenesis, GeneticMutationMicrosatellite RepeatsDNA, NeoplasmChromosomal InstabilityColonic NeoplasmsDNA Modification MethylasesGene Expression Regulation, NeoplasticPromoter Regions, GeneticAdaptor Proteins, Signal TransducingPrognosisGene SilencingRectal NeoplasmsProto-Oncogene ProteinsTumor Markers, BiologicalAdenomaCohort StudiesGenes, p53Nuclear ProteinsPolymerase Chain ReactionIslandsNeoplasm ProteinsKaplan-Meier EstimateImmunohistochemistryNeoplasm StagingSulfitesProspective StudiesLoss of HeterozygosityEpigenomicsGenes, NeoplasmRhode IslandIndian Ocean IslandsPacific IslandsCarrier ProteinsTumor Suppressor Protein p53Stomach NeoplasmsAdenocarcinomaDNA (Cytosine-5-)-MethyltransferaseMolecular Sequence DataPrince Edward IslandMediterranean IslandsGenes, Tumor Suppressor