Interleukin-6 (IL-6) is a cytokine involved in the inflammatory response within the body and serves as an important biomarker for the early detection of various disease conditions such as systemic lupus erythematosus (SLE), wherein higher urinary IL-6 levels correspond to the disease behavior with the kidneys being affected by lupus nephritis [7]. Here, IL6 is linked to systemic lupus erythematosus.