ITPR1 and cerebellar ataxia: SWJ have been described in many spinocerebellar ataxias (SCA), including SCA1, SCA2, SCA8, SCA10, SCA14, SCA20, SCA21, SCA25, SCA27, SCA29, SCA37, SCA46, and DRLPA, although they are more noticeable in SCA3 and SCA6 (35, 36).