Angelman SyndromePrader-Willi SyndromeChromosomes, Human, Pair 15SyndromesnRNP Core ProteinsGenomic ImprintingUbiquitin-Protein LigasesUniparental DisomyLaughterBeckwith-Wiedemann SyndromeRibonucleoproteins, Small NuclearIntellectual DisabilityDown SyndromeChromosome DeletionMetabolic Syndrome XMicrocephalyChromosome InversionAbnormalities, MultipleDNA MethylationPedigreeIn Situ Hybridization, FluorescencePhenotypeChromosome BreakageChromosome MappingAtaxiaNephrotic SyndromeGenetic CounselingChromosome BandingMethyl-CpG-Binding Protein 2AutoantigensSjogren's SyndromeGenetic MarkersFathersMutationDisease Models, Animal