CSNK1A1 and neurodegenerative disease: Considering their fundamental role, recent studies have highlighted the importance of CK1 and CK2 in the development of neurodegenerative diseases [14]—and regarding CK1 particularly, several studies state that of the four isoforms (CK1α, CK1β, CK1δ, and CK1ε), the most involved in the development of various neurodegenerative pathologies are CK1δ and CK1ε, but with CK2 having isoforms CK2α, CK2α’, CK2β, that are involved at the forefront.