Ataxia TelangiectasiaAtaxia Telangiectasia Mutated ProteinsTelangiectasisTelangiectasia, Hereditary HemorrhagicGenes, RecessiveAtaxiaSyndromeCerebellar AtaxiaTumor Suppressor ProteinsCell Cycle ProteinsProtein-Serine-Threonine KinasesRetinal TelangiectasisFriedreich AtaxiaDNA-Binding ProteinsDNA DamageConsanguinityPedigreeSpinocerebellar AtaxiasMutationRadiation, IonizingGait AtaxiaCheckpoint Kinase 2HomozygoteDNA RepairMicrocephalyGamma RaysRadiation TolerancePhenotypeHeterozygoteDNA Mutational AnalysisPolycystic Kidney, Autosomal RecessiveMutation, MissenseTumor Suppressor Protein p53DNA Breaks, Double-StrandedPhosphorylationDNA-Activated Protein KinaseEpistaxisAbnormalities, MultipleFibroblastsPyronesArteriovenous MalformationsActivin Receptors, Type IINuclear ProteinsNijmegen Breakage SyndromeHistonesMolecular Sequence DataGenetic LinkageCell LineCell CycleChromosome MappingDose-Response Relationship, RadiationBase SequenceCREST SyndromeChromosome AberrationsStreptonigrinRetinitis PigmentosaChromosome DisordersExonsSignal TransductionProtein KinasesChromosome BreakageLod ScoreAllelesDNA ReplicationDown SyndromeMetabolic Syndrome XCells, CulturedGenotypeG2 PhaseImmunologic Deficiency SyndromesUltraviolet RaysDNAApoptosisIntellectual DisabilityGenes, DominantAmino Acid SequenceProteinsCell Line, TransformedChromosomes, Human, Pair 11X-RaysMice, KnockoutIchthyosisIron-Binding ProteinsCell Line, TumorDNA Repair EnzymesHaplotypesLymphocytesInfrared RaysCodon, NonsenseNucleic Acid Synthesis InhibitorsCell SurvivalGenes, cdcReplication Protein AHypotrichosisGenomic InstabilityS PhaseCerebellumFrameshift MutationHeterozygote DetectionNephrotic Syndrome