IL1B and systemic lupus erythematosus: In this case IL-1β release was significantly lower in SLE patients respect to HC (SLE-NS vs. HC = 11.84 ± 4.68 vs. 66.19 ± 12.31, p < 0.0001; SLE-S vs. HC = 11.95 ± 4.99 vs. 66.19 ± 12.31, p = 0.0002) without difference between patients with serositis vs. patients without serositis (SLE-S vs. SLE-NS, p = 0.987).