Ad.CAT gene but not Ad.Empty transfection into CVP neurons markedly reduced T2DM-increased heterogeneity of ventricular electrical activity, as demonstrated by significant shorting in QT and QTc intervals, QT and QTc dispersions, and Tpe interval in the T2DM+Ad.CAT group toward the levels in the sham group (Figures 8A–F). This evidence concerns the gene CAT and type 2 diabetes mellitus.