Male gender (p = 0.0186), older age at the initiation of bDMARD/tsDMARD treatment (p = 0.0025), higher disease activity (DAS28-CRP; p = 0.0237, DAS28-ESR; p = 0.0397), and the coexistence of diabetes mellitus (p = 0.0245) were seen more often in the presence of chronic lung disease compared to the absence of chronic lung disease. This evidence concerns the gene CRP and diabetes mellitus.