The distribution of the studied genetic variants in IL-10, IL-13, and IL-17A_rs2275913 was similar in PD patients and healthy controls (n = 239 vs. n = 84) (Table 2), except for the f(T) of the IL-17A_rs8193036 variant, which showed a significant difference between groups regarding the CC genotypes and allelic frequencies (p < 0.010), with an OR = 1.91 (CI95% = 1.22–2.98) and an RR = 1.16 (CI95% = 1.06–1.27), p = 0.004. The gene discussed is IL17A; the disease is Parkinson disease.