OR: odds ratio; CI: confidence interval; MELD: Model for End-Stage Liver Disease; HTN: hypertension; DM: diabetes mellitus; COPD: chronic obstructive pulmonary disease; CKD: chronic kidney disease; SGOT: serum glutamic oxaloacetic transaminase; INR: international normalized ratio; NLR: neutrophil-to-lymphocyte ratio; CRP: C-reactive protein. This evidence concerns the gene CRP and chronic obstructive pulmonary disease.