SD, standard deviation; HTN, hypertension; Hb, hemoglobin; CKD, chronic kidney disease; DD, diastolic dysfunction; LVEF, left ventricular ejection fraction; LVEDD, left ventricular end-diastolic diameter; LAD, left atrial diameter; RVSP, right ventricular systolic pressure. The gene discussed is GSTM1; the disease is chronic kidney disease.