FGF14 and autosomal dominant cerebellar ataxia: Indeed, use of long-read sequencing has contributed to the discovery and/or validation of recently described novel repeat expansion loci as the cause of various movement disorders, including the GAA repeat expansion in FGF14 that causes SCA 27B [48, 96] and TTTCA/TTTTA repeat expansions that cause the familial cortical myoclonic tremor with epilepsy syndromes [97, 98].