| A rare type of hereditary spastic paraplegia that can present as either a pure form of spastic paraplegia with lower limb spasticity, hyperreflexia and extensor plantar responses, presenting in childhood or adolescence, or as a complex phenotype associated with additional manifestations including peripheral neuropathy with upper limb amyotrophy, moderate intellectual disability and parkinsonism. Deafness and retinitis pigmentosa were reported in one case. Caused by mutations in the KIF5A gene (12q13.13) encoding the protein kinesin heavy chain isoform 5A. |
