FGF14 and neurodegenerative disease: A study in 2023 has identified a new type of TNR expansion neurodegenerative disease, late-onset cerebellar ataxia (LOCA), also named GAA-FGF14 ataxia/spinocerebellar ataxia 27B, that is caused by GAA/TTC repeat expansion at intron 1 of the fibroblast growth factor 14 (FGF14) gene [4].