NEUROD1 and diabetes mellitus: We thank Dr. Akari Inada (Section of Diabetes and Genes, Stem Cell Unit, Graduate School of Medicine, Kyushu University, Japan) for the kind gift of ICER and CREM expression vectors; Dr. Hsiang-Po Huang (Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, Texas, USA) for the reporter genes, pGL3-NeuroD(−2.2 kb) and pGL3-NeuroD(−100 bp); Dr. Dell'Acqua (University of Colorado Health Sciences Center, USA) for the expression vector of PP2B/calcineurin catalytic subunit.