A multivariate binary logistic regression analysis was conducted using the factors that showed statistically significant differences in Table 4 (including diuretic administration, anemia, NT-ProBNP, short-term dapagliflozin administration, LVEF, baseline eGFR, and age) as independent variables, along with factors that may influence the occurrence of CIAKI (including contrast agent dose and hydration volume) as covariates. The gene discussed is NPPB; the disease is anemia (phenotype).