AllelesGenotypeGene FrequencyHeterozygotePolymorphism, GeneticPolymorphism, Single NucleotideHomozygoteGenetic Predisposition to DiseaseHaplotypesCase-Control StudiesPolymerase Chain ReactionMethylenetetrahydrofolate Reductase (NADPH2)MutationGenetic VariationLinkage DisequilibriumGenetics, PopulationRisk FactorsModels, GeneticPhenotypeGenetic MarkersPolymorphism, Restriction Fragment LengthAsian Continental Ancestry GroupMolecular Sequence DataSequence Analysis, DNABase SequenceMicrosatellite RepeatsChromosome MappingSelection, GeneticEuropean Continental Ancestry GroupGenetic Association StudiesGenome-Wide Association StudyGenetic LinkageGenetic LociDNA Mutational AnalysisPedigreeGenotyping TechniquesChinaExonsCrosses, GeneticHLA-DRB1 ChainsDNA PrimersGenome, HumanAfrican Continental Ancestry GroupDNAGenetic DriftPhylogenyQuantitative Trait LociHLA-DQ AntigensJapanAmino Acid SequenceEthnic GroupsGenetic TestingApolipoprotein E4Promoter Regions, GeneticRecombination, GeneticMinisatellite RepeatsEpistasis, GeneticCohort StudiesHeterozygote DetectionComputer SimulationEvolution, MolecularApolipoproteins EPoint MutationGenes, DominantHLA-DR AntigensMutation, MissenseOdds RatioQuantitative Trait, HeritableIntronsInheritance PatternsHapMap ProjectLikelihood FunctionsPopulationHLA-DQ alpha-ChainsAryl Hydrocarbon HydroxylasesHLA-B AntigensBreedingPeptidyl-Dipeptidase AGenes, RecessiveInbreedingGene DeletionGene PoolBiological EvolutionAlgorithmsAge of OnsetPolymorphism, Single-Stranded ConformationalModels, StatisticalPaternityKoreaGeographyPharmacogeneticsINDEL MutationDisease SusceptibilityDinucleotide RepeatsSpecies SpecificityPopulation GroupsCodonCytochrome P-450 CYP2D6Time FactorsEurope