Several genes are implicated in AD (CACNA1C, CALM1, CALM2, CALM3, IDE), circadian entrainment (CACNA1C, CALM1, CALM2, CALM3), and dopamine signaling (CACNA1C, CALM1, CALM2, CALM3, LRRK2).LRRK2 is the only gene in the network linked to PD. The gene discussed is CALM2; the disease is Parkinson disease.