Likewise, there was no association between CRP levels and CCL20 levels in patients with Crohn’s disease [univariable: β (95% CI) = 0.044 (− 0.023, 0.111), p = 0.19; multivariable: β (95% CI) = 0.027 (− 0.040, 0.095), p = 0.43] and ulcerative colitis [univariable: β (95% CI) = 0.016 (− 0.121, 0.152), p = 0.82; Table 3]. This evidence concerns the gene CRP and Crohn disease.