The mean (95% CI) HRs for MACE in CKD patients not on dialysis (n = 5) and on dialysis (n = 2) were 0.92 (0.86–0.99) and 0.72 (0.21–2.46) per 1 g/dL increase in Hb, respectively. The gene discussed is GSTM1; the disease is chronic kidney disease.