As shown in Table 2, DRD2 rs1799732 was not associated with migraine risk when assuming a homozygote (OR = 11.55, 95% CI = 0.67–199.78), dominant (OR = 1.18, 95% CI = 0.79–1.77), recessive (OR = 11.35, 95% CI = 0.66–196.14), allele (OR = 1.05, 95% CI = 0.91–1.23), and heterozygote model (OR = 1.09, 95% CI = 0.72–1.64), without significant heterogeneity (PHet > 0.05, I2 < 50%). Here, DRD2 is linked to migraine disorder.