Of note, most of these patients were negative for other autoantibodies associated with autoimmunity and/or lung autoimmunity in other conditions (KCNRG, BPIFB1, TRIM38, CENP-A, interferon-ω, ABLIM, and CDHR) suggesting some specificity for ILD in the context of SjD. This evidence concerns the gene BPIFB1 and interstitial lung disease.