Spastic Paraplegia 72a, Autosomal Dominant, also known as spastic paraplegia 72, autosomal dominant, is related to hereditary spastic paraplegia 72a and amyotrophic lateral sclerosis 1, and has symptoms including muscular stiffness An important gene associated with Spastic Paraplegia 72a, Autosomal Dominant is REEP2 (Receptor Accessory Protein 2). Related phenotypes are urinary bladder sphincter dysfunction and babinski sign