CD4 and peeling skin syndrome: Fifty-five cases among the 116 pSS patients were non-extraglandular manifestations, the mean percentage of CD4+GranzB+CTLs was 4.1% ± 2.2%.While the percentage was significantly elevated in the patients with various systemic damages (9.7% ± 5.3%, p < 0.0001, Fig. 2A).