GJA1 and oculodentodigital dysplasia: In Astrocyte–Oligodendrocyte Crosstalk in Oculodentodigital Dysplasia and Astrocyte–Microglia Crosstalk in Oculodentodigital Dysplasia, plausible effects of mutated Cx43 on oligodendrocytes and microglia are discussed and put in relation to ODDD pathophysiology.