CD8A and peeling skin syndrome: The percentage of CD8+GranzB+CTLs also elevated in pSS patients than in HCs (37.4% ± 15.9% vs 51.3% ± 14.3%, p < 0.0001) and significantly related to ESSDAI (r = 0.3665, p < 0.0001) (showed in Sup Fig. 1) and higher in extraglandular manifestations group (p < 0.05).