Description : Spastic paraplegia-12 is an autosomal dominant neurodegenerative disorder characterized
by lower limb spasticity and hyperreflexia, resulting in walking difficulties. Some
patients may have urinary symptoms and distal sensory impairment. The age at onset
is variable and can range from childhood to adulthood (summary by Montenegro et al.,
2012). For a general description and a discussion of genetic heterogeneity of autosomal
dominant spastic paraplegia, see SPG3A (182600).;
Inheritance : Autosomal dominant;
Molecular basis : Caused by mutation in the reticulon 2 gene (RTN2, 603183.0001).;