TRIM21 and peeling skin syndrome: Based on available patient data, 212 patients (69%) met the American College of Rheumatology/European League Against Rheumatism (ACR/EULAR) criteria for the diagnosis of pSS: 145 (47%) by virtue of a positive lip biopsy and positive anti-Ro/SSA antibodies, 63 (20%) by virtue of a positive lip biopsy and positive Schirmer’s test, and 4 (1%) by virtue of a positive lip biopsy and other objective criteria (ocular staining score or salivary flow rate).