Spastic Paraplegia, HereditaryParaplegiaNeurologyParaparesis, SpasticPedigreeAdenosine TriphosphatasesGenes, DominantGenes, RecessiveMuscle SpasticityParaparesis, Tropical SpasticAdaptor Protein Complex 4Agenesis of Corpus CallosumMutationGenetic HeterogeneityNervous System DiseasesVesicle-Associated Membrane Protein 1Spinal Cord IschemiaChromosomes, Human, Pair 2PhenotypeLod ScoreAge of OnsetATP-Dependent ProteasesMutation, MissenseCerebral PalsyQuadriplegiaGTP PhosphohydrolasesDNA Mutational AnalysisMicrotubulesAxonsMetalloendopeptidasesSpinal CordMotor NeuronsSpinal Cord InjuriesGenetic LinkageHeterozygoteCorpus CallosumMagnetic Resonance ImagingChromosome MappingTuberculosis, SpinalParaparesisHistory, 19th CenturyAortic Aneurysm, ThoracicHistory, 20th CenturyHysteriaMembrane ProteinsSpinal Cord CompressionFrameshift MutationEndosomesBrainPsychiatry