Spastic Paraplegia 64, Autosomal Recessive, also known as hereditary spastic paraplegia 64, is related to spastic paraplegia 82, autosomal recessive and spastic paraplegia 20, autosomal recessive. An important gene associated with Spastic Paraplegia 64, Autosomal Recessive is ENTPD1 (Ectonucleoside Triphosphate Diphosphohydrolase 1), and among its related pathways/superpathways are Metabolism of nucleotides and ATP/ITP metabolism. Affiliated tissues include brain and skeletal muscle, and related phenotypes are spasticity and dysarthria