Spastic Paraplegia, HereditaryParaplegiaParaparesis, SpasticMuscle SpasticityPedigreeAdaptor Protein Complex 4Genes, RecessiveGenes, DominantAdenosine TriphosphatasesParaparesis, Tropical SpasticCerebellar AtaxiaReflex, BabinskiAgenesis of Corpus CallosumSpasmLod ScoreSpinal Cord IschemiaPelizaeus-Merzbacher DiseaseMutation, MissenseChromosomes, Human, Pair 2Cerebral PalsyMutationHuman CharacteristicsHereditary Sensory and Motor NeuropathyQuadriplegiaOptic AtrophyAge of OnsetGenetic LinkageGenetic HeterogeneityPhenotypeSyndromeExomeSpinal CordLeukocyte L1 Antigen ComplexSpinocerebellar DegenerationsIntellectual DisabilityConsanguinitySpinal Cord InjuriesATP-Dependent ProteasesMyelin Proteolipid ProteinCorpus CallosumChromosome MappingDNA Mutational AnalysisHeterozygoteMotor NeuronsMetalloendopeptidasesTuberculosis, SpinalGTP PhosphohydrolasesParaparesisAortic Aneurysm, ThoracicAxonsSex Chromosome AberrationsMicrotubulesSpinal Cord CompressionMotor Neuron DiseaseOptic Atrophies, HereditaryHydrocephalusLaminectomyMagnetic Resonance ImagingX ChromosomeNeural ConductionHaplotypesChromosomes, Human, Pair 14Equinus DeformityCodon, NonsenseChromosomes, Human, Pair 15