CaV1.3, CaV1.3, CaV2.1, CaV2.3, CaV3.2 and CaV3.3 were expressed in more than 50% of samples, CaV1.2 was more prominently expressed in individuals with type 1 diabetes but for the remaining subtypes frequency of expression was lower. The gene discussed is CACNA1D; the disease is type 1 diabetes mellitus.