Abbreviations: CRP: C-reactive protein, IL-6: interleukin-6, AST: aspartate transaminase, ALT: alanine aminotransferase, LDH: lactate dehydrogenase, GFRCKD-EPI: Glomerular filtration rate - Chronic Kidney Disease Epidemiology Collaboration, ACE2: Angiotensin-converting enzyme 2, WBC: white blood cell, PLT: platelet. Here, IL6 is linked to chronic kidney disease.