In our study, we identified causal variants in known SCA genes among 8 patients, including CWF19L1, SNX14, THG1L, VPS13D, RUBCN, GRID2, MME, and FAT2. Among our patients, missense variants were particularly common, with 13 missense variants observed. Here, THG1L is linked to autosomal dominant cerebellar ataxia.