No significant differences in allele and genotype frequencies of BAFF polymorphism were detected between patients with pSS and control individuals (T allele frequency: 49.7% in patients with pSS versus 50% in controls, P = 0.94; TT genotype: 26% in pSS versus 23.3%; TC genotype: 48.5% versus 53.4%, CC genotype: 25.5% versus 23.3%, P = 0.78). The gene discussed is TNFSF13B; the disease is peeling skin syndrome.