IL1RN and psoriasis: Random‐effect meta‐analyses combining the data did not identify any associations of the IL‐1RN VNTR polymorphism with psoriasis under four genetic models (dominant model: OR = 1.33, 95% CI: 0.76–1.35, p = 0.317; recessive model: OR = 1.77, 95% CI: 0.65–4.82, p = 0.262; additive model: OR = 1.80, 95% CI: 0.64–5.09, p = 0.266; allelic model: OR = 1.16, 95% CI: 0.89–1.50, p = 0.279; Table 3 and Figure 3).