Noonan SyndromeLEOPARD SyndromeProto-Oncogene Proteins B-rafProtein Tyrosine Phosphatase, Non-Receptor Type 11Genes, rasLeukemia, Myelomonocytic, JuvenileSOS1 ProteinMutationSyndromeCostello Syndromeras ProteinsMelanomaFaciesDNA Mutational AnalysisLoose Anagen Hair SyndromeMutation, MissensePulmonary Valve StenosisEyebrowsNevus, PigmentedSkin NeoplasmsPathology, MolecularAbnormalities, MultipleGerm-Line MutationPoint MutationFailure to ThriveProto-Oncogene Proteins p21(ras)GTP PhosphohydrolasesProtein Tyrosine PhosphatasesCherubismSkin AbnormalitiesCraniofacial AbnormalitiesEctodermal DysplasiaSexual DevelopmentBezoarsGenes, Neurofibromatosis 1Heart Defects, CongenitalDiagnostic Techniques, EndocrineCardiomyopathy, HypertrophicPhenotypeNeurofibromatosis 1Intracellular Signaling Peptides and Proteins