RCAN1 and type 2 diabetes mellitus: Recent studies also support the notion that although the short-term induction of RCAN1 expression generally has a protective effect in multiple cell types by inhibiting the calcineurin/NFAT transcriptional pathway [16,43], chronic overexpression of RCAN1 may drive pathophysiological changes in neurons and endocrine cells linked to Down syndrome, Alzheimer’s disease and Type 2 diabetes [17,44,45].