Noonan SyndromeLEOPARD SyndromeProto-Oncogene Proteins B-rafProtein Tyrosine Phosphatase, Non-Receptor Type 11SOS1 ProteinSyndromeMutationCostello SyndromeFaciesMutation, MissenseLoose Anagen Hair SyndromePulmonary Valve Stenosisras ProteinsEyebrowsDNA Mutational AnalysisGerm-Line MutationAbnormalities, MultiplePoint MutationFailure to ThriveProtein Tyrosine PhosphatasesCherubismSkin AbnormalitiesCraniofacial AbnormalitiesGenes, rasEctodermal DysplasiaSexual DevelopmentBezoarsGenes, Neurofibromatosis 1Proto-Oncogene Proteins c-rafHeart Defects, CongenitalPhenotypeLeukemia, Myelomonocytic, JuvenileMicrosatellite InstabilityDiagnostic Techniques, EndocrineCardiomyopathy, HypertrophicExonsNeurofibromatosis 1Intracellular Signaling Peptides and ProteinsMelanoma