Noonan SyndromeLEOPARD SyndromeSex ChromosomesGenes, X-LinkedProtein Tyrosine Phosphatase, Non-Receptor Type 11Genes, Y-LinkedChromosomes, Human, XY ChromosomeSOS1 ProteinSyndromeX ChromosomeChromosomesCostello SyndromeFaciesDosage Compensation, GeneticChromosome MappingLoose Anagen Hair SyndromeSex DifferentiationPulmonary Valve StenosisEyebrowsSex-Determining Region Y ProteinAbnormalities, MultipleSex CharacteristicsSex Determination ProcessesFailure to ThriveProtein Tyrosine PhosphatasesCherubismMutationChromosome BandingCraniofacial AbnormalitiesSkin AbnormalitiesEctodermal DysplasiaSexual DevelopmentBezoarsGenes, Neurofibromatosis 1Chromosome AberrationsHeart Defects, CongenitalGerm-Line MutationLeukemia, Myelomonocytic, JuvenilePhenotypeDiagnostic Techniques, EndocrineChromosomes, Human, Pair 1ras ProteinsNeurofibromatosis 1Molecular Sequence DataCardiomyopathy, HypertrophicIntracellular Signaling Peptides and ProteinsChromosomes, Human