Pathogenic ATXN2 (≥33, P = 0.046) and premutated ATXN1 (≥33, P = 0.0069) expansions showed nominally significant associations, and pathogenic CSTB expansions were nominally significantly associated when the recessive mode of inheritance associated with Unverricht–Lundborg disease was not considered (≥30, P = 0.021, Table S12). The gene discussed is ATXN1; the disease is glycogen storage disease VI.