In addition, IL-1α (OR = 0.74, 95%CI:0.58 ~ 0.0.96;P = 0.022), GDNF (OR = 0.76, 95% CI: 0.61 ~ 0.94; P = 0.013), OPG (OR = 0.76, 95% CI: 0.61 ~ 0.94; P = 0.012) and TNF-β (OR = 0.80, 95% CI: 0.68 ~ 0.93; P = 0.006) were negatively associated with the risk of MG. Here, GDNF is linked to myasthenia gravis.