Moreover, although levels of IL-17A have been widely shown to be elevated in patients with SLE, only a few studies have shown that IL-17A levels correlate with the SLE Disease Activity Index (SLEDAI) 40–48, with slightly more studies concluding either that IL-17A levels do not correlate with the SLEDAI or that these levels are actually inversely correlated with the disease score 49–60. Here, IL17A is linked to systemic lupus erythematosus.