HP and systemic lupus erythematosus: Furthermore, in the context of disease activity, SLE patients were divided into two groups based on SLEDAI score of <6 and ≥6; nevertheless, no statistically significant differences in plasma zonulin levels were detected between these groups (n = 22, 7.235 ± 1.727 vs. n = 19, 7.951 ± 2.221, p = 0.549, Mann–Whitney U-test).