Polymorphism, Single NucleotideBreastPolymorphism, GeneticGenetic Predisposition to DiseaseBreast NeoplasmsGenotypeNucleotidesGene FrequencyAllelesCase-Control StudiesCarcinoma, Ductal, BreastHaplotypesReceptors, EstrogenMolecular Sequence DataCell Line, TumorBase SequenceRisk FactorsReceptor, erbB-2Polymerase Chain ReactionBreast DiseasesLinkage DisequilibriumTamoxifenGene Expression Regulation, NeoplasticReceptors, ProgesteroneGenetic VariationPrognosisMammographyGenetic Association StudiesMutationSequence Analysis, DNANeoplasm MetastasisAsian Continental Ancestry GroupNeoplasm InvasivenessTumor Markers, BiologicalPhenotypeBreast Neoplasms, MalePromoter Regions, GeneticNeoplasm StagingGenome-Wide Association StudyRiskNeoplasm ProteinsEuropean Continental Ancestry GroupRNA, MessengerAntineoplastic Agents, HormonalOdds RatioGenes, BRCA1Antineoplastic AgentsPostmenopauseEarly Detection of CancerGenetic MarkersMastectomyAmino Acid SequenceDNA Mutational AnalysisCohort StudiesGene Expression ProfilingChemotherapy, AdjuvantChinaCarcinoma, LobularEstrogen Receptor alphaReverse Transcriptase Polymerase Chain ReactionTumor Cells, CulturedDNA PrimersDNAPolymorphism, Single-Stranded ConformationalSurvival AnalysisPremenopauseExonsChromosome MappingCarcinomaDrug Resistance, NeoplasmCarcinoma, Intraductal, NoninfiltratingHeterozygoteMCF-7 CellsProspective StudiesMice, NudeAntineoplastic Combined Chemotherapy ProtocolsOvarian NeoplasmsEstrogensFollow-Up StudiesBreast FeedingRisk AssessmentLung NeoplasmsDisease-Free SurvivalOligonucleotide Array Sequence AnalysisImmunohistochemistryDNA, NeoplasmHomozygoteDisease ProgressionCell ProliferationNeoplasms, Hormone-DependentBreast Self-ExaminationMenopauseLymphatic MetastasisProstatic NeoplasmsBRCA2 ProteinSurvival RateMammary Neoplasms, ExperimentalNeoplasmsNeoplasm Recurrence, LocalAge Factors