Taken together, these pieces of information can corroborate our findings in which BD patients presented not only higher circulating TNF-α levels, a well-known pro-inflammatory cytokine associated with Th1 immune profile, than the control group but also a significant negative correlation between the levels of HERV-W-env expression and IL-10, a classical anti-inflammatory cytokine, besides significant positive correlations with TNF-α/IL-10 and IFN-γ/IL-10 ratios. Here, IL10 is linked to Behcet disease.