CD4 and Parkinson disease: Four additional analytical methods—MR Egger, Weighted Median, Simple Mode, and Weighted Mode—were employed to ascertain the stability of the results, yet the Simple Mode method did not substantiate a causal relationship for Myeloid DC within DCs (OR = 0.975, 95% CI: 0.848–1.120, p = 0.725), CD14+ CD16+ Monocytes (OR = 0.982, 95% CI: 0.831–1.161, p = 0.837), HVEM on CD45RA− CD4+ T cells (OR = 0.905, 95% CI: 0.819–0.999, p = 0.063), or HLA DR+ NK cells within CD3− lymphocytes (OR = 1.049, 95% CI: 0.889–1.237, p = 0.576) in relation to PD.