Age of OnsetHuntington DiseaseTrinucleotide RepeatsPedigreeGenotypeAge FactorsGenetic Predisposition to DiseaseGene FrequencyPolymorphism, Single NucleotideRisk FactorsMutationTime FactorsDNA Mutational AnalysisPresenilin-1Retinal DystrophiesRegression (Psychology)Dystonia Musculorum DeformansAlzheimer DiseaseFamily HealthCase-Control StudiesPhenotypeAdrenarcheInfant, NewbornPregnancyPresenilin-2Labor OnsetPre-EclampsiaBrainDisease Models, AnimalGerm-Line MutationMutation, MissenseSeverity of Illness IndexHeterozygoteSyndromeRetrospective StudiesDisease ProgressionSpinocerebellar DegenerationsParkinson DiseaseAllelesGenes, DominantMagnetic Resonance ImagingCohort StudiesPuberty, PrecociousGenes, RecessiveProspective StudiesMolecular Sequence DataFollow-Up StudiesCerebellar AtaxiaHomozygoteGenetic LinkagePolymorphism, GeneticStreptococcus agalactiaeAtaxiaConsanguinityExonsGenetic TestingCharcot-Marie-Tooth DiseasePolymerase Chain ReactionSural NerveMice, Inbred C57BLAnalysis of VarianceMice, KnockoutBase SequenceMembrane ProteinsMice, TransgenicLongitudinal StudiesColorectal Neoplasms, Hereditary NonpolyposisElectroencephalographyIncidenceDiabetes Mellitus, Type 1Treatment OutcomeSex FactorsSepsisMarijuana SmokingImmunohistochemistryBRCA1 ProteinFatal OutcomeBRCA2 ProteinEpilepsyFamilyPoint MutationDistal MyopathiesEarly DiagnosisLod ScorePsychotic DisordersSeizuresDystoniaGenes, BRCA1Parkinsonian DisordersLeber Congenital AmaurosisStreptococcal InfectionsFetal Growth RetardationAmyloid beta-Protein PrecursorNeuronsHaplotypesReaction TimePrognosisSchizophreniaNeoplastic Syndromes, HereditaryPneumonia, Staphylococcal