Higher MMP-10 serum levels were associated with worse baseline pulmonary function in RA-ILD+ patients represented by decreased forced vital capacity (FVC) and forced expiratory volume in one second (FEV1) (r=-0.3483, p = 0.0205 and r=-0.3556, p = 0.0178, respectively, Additional File 4: Figure S2). This evidence concerns the gene MMP10 and interstitial lung disease.