MYH9 [41,174,175,176], ERBB2 [38,177,178,179,180], TCF4 [65,181], VIM (vimentin) [182,183], LRRK2 [184,185] and CAV1 [161,186,187,188,189,190,191,192] have been implicated as a principal mediator of diabetes mellitus. This evidence concerns the gene LRRK2 and diabetes mellitus.