Moreover, the IQR increment in Hcy, total proteins, and albumin levels were also significantly associated with the risk of subsequent PD diagnosis: the ORs were 20.19 (95% CI: 4.05–100.68, p for trend = 0.017) for Hcy, 11.66 (95% CI: 2.33–58.28, p for trend = 0.013) for total proteins, 3.87 (95% CI: 0.99–15.18, p for trend = 0.044) for albumin. This evidence concerns the gene ALB and Parkinson disease.