There was no statistically significant difference in IL-6 levels among healthy controls [5.12 ng/mL (IQR 3.85–10.16)], progressive KC patients [4.9 ng/mL (3.46–6.9)], and stable KC patients [8.18 ng/mL (4.54–13.26)] (p = 0.294). This evidence concerns the gene IL6 and keratoconus.