The aim of this volume is to summarize novel findings on the function, pathophysiology, and regulation of voltage-gated Ca2+ channels and on novel concepts of their pharmacological modulation. Impressive insights into the role of channel function and regulation have come from Ca2+ channelopathies affecting the pore-forming as well as accessory subunits and channel-interacting proteins. Moreover, the long-sought molecular basis for key regulatory pathways have been discovered as well as exciting concepts of their subtype-selective pharmacological modulation.