Mutation, MissenseHomozygoteConsanguinityPedigreeDNA Mutational AnalysisExomeGenes, RecessiveMutationCutis LaxaMolecular Sequence DataExonsAmino Acid SequenceGenetic VariationPhenotypeSequence Analysis, DNAGenetic Predisposition to DiseaseBase SequenceSyndromeAbnormalities, MultiplePolymorphism, Single NucleotideGenotypeGene FrequencyChromosome MappingBRCA1 ProteinRetinal DystrophiesGerm-Line MutationHeterozygoteAllelesGenetic TestingCase-Control StudiesAmino Acid SubstitutionFrameshift MutationGenes, BRCA1HaplotypesGenetic Association StudiesPolymorphism, GeneticGenes, BRCA2Genome-Wide Association StudyBRCA2 ProteinAge of OnsetColorectal Neoplasms, Hereditary NonpolyposisAtaxia Telangiectasia Mutated ProteinsDNA-Binding ProteinsPolymerase Chain ReactionBreast NeoplasmsComputational BiologySequence AlignmentEuropean Continental Ancestry GroupNuclear ProteinsCohort StudiesTumor Suppressor ProteinsModels, MolecularLinkage DisequilibriumNerve Tissue ProteinsCell Cycle ProteinsAdaptor Proteins, Signal TransducingProtein-Serine-Threonine KinasesAlternative SplicingPoint MutationRisk FactorsPolymorphism, Single-Stranded ConformationalCodon, NonsenseProtein Structure, TertiarySequence Homology, Amino Acid