However, in the pSS patient population, we found significantly elevated percentages of IL-21-producing iNKT cells within iNKT population, compared to the values determined in healthy individuals (median (min–max): 2.81 (0.1–29.02)% versus 1.16 (0.1–12.1)%, resp., p = 0.0141). The gene discussed is IL21; the disease is peeling skin syndrome.