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  • A form of hereditary spastic paraplegia characterised by either a pure phenotype of slowly progressive spastic paraplegia of the lower extremities with bladder dysfunction and pes cavus or a complex presentation with additional manifestations including cerebellar signs, nystagmus, distal or generalised muscle atrophy and cognitive impairment. Age of onset is highly variable, ranging from early childhood to adulthood. White matter hyperintensity and cerebellar and spinal cord atrophy may be noted on brain magnetic resonance imaging in some patients. The disease is caused by homozygous or compound heterozygous mutation in the CYP7B1 gene on chromosome 8q12.
  • A form of hereditary spastic paraplegia characterized by either a pure phenotype of slowly progressive spastic paraplegia of the lower extremities with bladder dysfunction and pes cavus or a complex presentation with additional manifestations including cerebellar signs, nystagmus, distal or generalized muscle atrophy and cognitive impairment. Age of onset is highly variable, ranging from early childhood to adulthood. White matter hyperintensity and cerebellar and spinal cord atrophy may be noted on brain magnetic resonance imaging in some patients. The disease is caused by homozygous or compound heterozygous mutation in the CYP7B1 gene on chromosome 8q12.
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