Two were associated with a higher risk of PD: Interleukin-17A levels (IVW, OR = 1.285; 95%CI, 1.051–1.571; p = 0.014) and TNF-beta levels (IVW, OR = 1.088; 95%CI, 1.010–1.171; p = 0.026). This evidence concerns the gene IL17A and Parkinson disease.