Hereditary Breast and Ovarian Cancer SyndromeOvarian NeoplasmsGenes, BRCA1BRCA2 ProteinGenes, BRCA2BRCA1 ProteinBlood SubstitutesNeoplastic Syndromes, HereditaryGenetic TestingBreast NeoplasmsGenetic CounselingGerm-Line MutationSyndromePedigreeGenes, DominantGenetic Predisposition to DiseaseBreastMutationHeterozygotePolycystic Kidney, Autosomal DominantDNA Mutational AnalysisNeoplasm ProteinsNeoplasms, Glandular and EpithelialFounder EffectFamily HealthBreast Neoplasms, MaleGenetic LinkageAge of OnsetLibyaColorectal Neoplasms, Hereditary NonpolyposisGene Expression Regulation, Neoplasticvon Hippel-Lindau DiseaseRisk FactorsCell Line, TumorExonsCarcinoma, Ductal, BreastDNA, NeoplasmMastectomy