UGT1A1 and autosomal dominant cerebellar ataxia: Our finding that the low-activity UGT1A1 (TA) n genotype was associated with gallstones confirms previous observations that SCA patients with the low-activity UGT1A1 (TA) n genotypes especially the TA7/7, are at risk of developing gallstones [2, 6, 7, 11, 17].