Spinocerebellar Ataxia 49, also known as sca49, is related to aceruloplasminemia and polyneuropathy. An important gene associated with Spinocerebellar Ataxia 49 is SAMD9L (Sterile Alpha Motif Domain Containing 9 Like). Affiliated tissues include spinal cord and cerebellum, and related phenotypes are hyperreflexia and cerebellar atrophy