Hereditary spastic paraplegia (HSP) is a group of inherited diseases whose main feature is a progressive gait disorder. The disease presents with progressive stiffness (spasticity) and contraction in the lower limbs. HSP is also known as hereditary spastic paraparesis, familial spastic paraplegia, French settlement disease, Strumpell disease, or Strumpell-Lorrain disease. The symptoms are a result of dysfunction of long axons in the spinal cord. The affected cells are the primary motor neurons; therefore, the disease is an upper motor neuron disease. HSP is not a form of cerebral palsy even though it physically may appear and behave much the same as spastic diplegia. The origin of HSP is different from cerebral palsy. Despite this, some of the same anti-spasticity medications used in spastic cerebral palsy are sometimes used to treat HSP symptoms.
Wolframin is a protein that in humans is encoded by the WFS1 gene.
Atlastin, or Atlastin-1, is a protein that in humans is encoded by the ATL1 gene.
Alsin is a protein that in humans is encoded by the ALS2 gene. ALS2 orthologs have been identified in all mammals for which complete genome data are available.
Gap junction beta-3 protein (GJB3), also known as connexin 31 (Cx31) — is a protein that in humans is encoded by the GJB3 gene.
Ganglioside-induced differentiation-associated protein 1 is a type of protein that in humans is encoded by the GDAP1 gene.
Paraplegin is a protein that in humans is encoded by the SPG7 gene located on chromosome 16.
Spartin is a protein that in humans is encoded by the SPG20 gene.
Alpha-tectorin is a protein that in humans is encoded by the TECTA gene.
Sodium bicarbonate transporter-like protein 11 is a protein that in humans is encoded by the SLC4A11 gene.
Kinesin family member 5A is a protein that in humans is encoded by the KIF5A gene.
Optic atrophy 3 protein is a protein that in humans is encoded by the OPA3 gene.
Non-imprinted in Prader-Willi/Angelman syndrome region protein 1 is a protein that in humans is encoded by the NIPA1 gene. This gene encodes a potential transmembrane protein which functions either as a receptor or transporter molecule, possibly as a magnesium transporter. This protein is thought to play a role in nervous system development and maintenance. Alternative splice variants have been described, but their biological nature has not been determined. Mutations in this gene have been associated with the human genetic disease autosomal dominant spastic paraplegia 6.
KIAA0196 is a human gene. The product is a protein that is a component of the WASH complex, which regulates actin assembly on intracellular vesicles. Mutations in KIAA0196 are implicated in some forms of hereditary spastic paraplegia.
Maspardin is a protein that in humans is encoded by the SPG21 gene.
Oculodentodigital syndrome is an extremely rare genetic condition that typically results in small eyes, underdeveloped teeth, and syndactyly and malformation of the fourth and fifth fingers. It is considered a kind of ectodermal dysplasia.
Gap junction gamma-2 (GJC2), also known as connexin-46.6 (Cx46.6) and connexin-47 (Cx47) and gap junction alpha-12 (GJA12), is a protein that in humans is encoded by the GJC2 gene.
Acetyl-coenzyme A transporter 1 also known as solute carrier family 33 member 1 (SLC33A1) is a protein that in humans is encoded by the SLC33A1 gene.
Zinc finger, FYVE domain containing 26 is a protein that in humans is encoded by the ZFYVE26 gene.
Zinc finger, FYVE domain containing 27 is a protein that in humans is encoded by the ZFYVE27 gene.
