BTG3 and rheumatoid arthritis: CKD: chronic kidney disease; HTN: hypertension; RA: rheumatoid arthritis; lupus: systemic lupus erythematosus; DM: diabetes mellitus; CHF: congestive heart failure; CAD: coronary artery disease; ANA: antinuclear antibody; IF: immunofluorescence; QD: once daily; TID: three times daily