Spastic Paraplegia 3a, also known as spastic paraplegia 3, is related to spastic paraplegia 31, autosomal dominant and neuropathy, and has symptoms including leg cramps, pain in lower limb and urgency of micturition. An important gene associated with Spastic Paraplegia 3a is ATL1 (Atlastin GTPase 1). The drugs Acetylcholine and Cholinergic Agents have been mentioned in the context of this disorder. Affiliated tissues include spinal cord and brain, and related phenotypes are adipose tissue and immune system