CD8A and peeling skin syndrome: Negative correlation between % CD8+CD28− T cells and dryness/fatigue/pain in pSS (r = −0.44, −0.58, −0.71, p < 0.05 for all). Negative correlation between % CD8+CD28− T cells and total ESSDAI (r = −0.43, p < 0.05). Decrease in % CD8+CD28− T cells correlated with higher disease activity in the cutaneous (p = 0.04) and muscular (p = 0.02) ESSDAI domains.