By analyzing joint conditions, association studies have found that genes like ANRIL/CDKN2B-AS1, PLG, CAMTA1/VAMP3 are involved in the pathogenesis of PD and CAD, a fact that suggests functional features and helps to account for some of the missing heritability of PD (Aarabi et al., 2017). The gene discussed is CDKN2B; the disease is Parkinson disease.