A study conducted by Jönsson et al. on 1466 RA patients from northern Sweden analyzed 571151 SNVs, finding that 4 of the tested SNPs were associated with interstitial lung involvement in RA, as follows: rs35705950 (MUC5B gene), rs2609255 (FAM13A), rs111521887 (TOLLIP gene), and rs2736100 (TERT gene). This evidence concerns the gene MUC5B and rheumatoid arthritis.