TRIM21 and systemic lupus erythematosus: In a study by Jeon et al., anti-SS-A (47.4%), anti-Ro52 (42.1%), anti-dsDNA (39.5%), anti-nucleosome (28.9%), anti-ribosomal P (28.9%), anti-nRNP/Sm (26.3%), anti-histone (26.3%), and anti-SS-B (26.3%) were identified in SLE patients [16], whereas in our study, P0 (100%), PM-Scl (100%), anti-U1-snRNP (56%), anti-SS-A/Ro60 (56.5%), anti-SS-B/La (54.2%), anti-SmD1 (77%), and anti-SS-A/Ro52 (58.3%) were associated with SLE patients.