GSTM1 and Hypertension: According to univariate Cox regression analysis, we incorporated serum chloride level (<105.40 mmol/L or ≥105.40 mmol/L), hypertension (yes or no), sCr, UA, 24 h-UTP, serum phosphorus, Hb, and Oxford classification grade (T, M, S, and A) as our initial prognostic features (Supplemental Material Table 1).