Spastic Paraplegia, Ataxia, and Mental Retardation, also known as spar, is related to tracheopathia osteoplastica and fundus albipunctatus, and has symptoms including ataxia and urgency of micturition. The drugs Amiloride and Spironolactone have been mentioned in the context of this disorder. Affiliated tissues include eye and prostate, and related phenotypes are intellectual disability and hyperreflexia