CAMK2G and familial dilated cardiomyopathy: As expected, in DCM patients, blockade of CaMKII reduced the Po of LTCC crest channels, from a Po of 0.113±0.0161 on DCM crest to a Po of 0.025±0.0031 on DCM crest LTCCs treated with KN-93 (p<0.01).