TRIM21 and Schwartz-Jampel syndrome: A marked difference in antibody titers was also observed in a study by Ching, in which SjS patients and controls were significantly differentiated (p < 0.0001); anti-Ro60 and anti-Ro52 salivary antibodies testing presented a high sensitivity and very high specificity (Ro60: 70% sensitivity and 96% specificity; Ro52: 67% sensitivity and 100% specificity) [25].