CD38 and Parkinson disease: Moreover, GPNMB (OR:0.898, 95% CI: 0.864–0.932, P = 1.16E-08) and CD38 (OR:1.256, 95%CI:1.182–1.335, P = 1.50E-13) were also validated to be causal genes for PD using another eQTL dataset.