Moreover, C-reactive protein (CRP) was more frequently increased in the non-IPF group (78% vs. 58%—p 0.007), but patients in the IPF group showed higher CRP median values (3.64 (interquartile range (IQR) 1.23–5.19) vs. 1.42 (IQR 0.51–4.1)—p 0.02). This evidence concerns the gene CRP and idiopathic pulmonary fibrosis.