However, the NCX currents (normalized to cell size) showed similar values in WT and CPVT myocytes (peak current density normalized by peak caffeine-evoked [Ca2+]i transient, as evaluated by synchronous confocal images, in pA/pF: −0.88±0.09 vs −0.82±0.13, in 10 WT vs 12 CPVT cells, respectively, P>0.05). The gene discussed is TLX2; the disease is catecholaminergic polymorphic ventricular tachycardia.