HypertelorismAbnormalities, MultipleCraniofacial AbnormalitiesSyndromeFaciesHereditary Central Nervous System Demyelinating DiseasesIntellectual DisabilityColobomaNoonan SyndromeMacrocephalyLoeys-Dietz SyndromeCraniofacial DysostosisHeadBone Diseases, DevelopmentalLEOPARD SyndromeSkullBlepharoptosisAcrocephalosyndactyliaEncephaloceleSex Chromosome DisordersHamartoma Syndrome, MultipleHand Deformities, CongenitalAutistic DisorderMental Retardation, X-LinkedGlutaryl-CoA DehydrogenaseFacePTEN PhosphohydrolaseMuscle HypotoniaMicrocephalyAgenesis of Corpus CallosumPedigreeCentral Nervous System CystsPhenotypeTrisomyNeurofibromatosis 1HydrocephalusCephalometryInfant, NewbornConsanguinityCystsGenetic TestingGerm-Line MutationKaryotypingChromosome DeletionDNA Mutational Analysis