Among patients with AKI and non-AKI, subgroup analysis for the association between BCR and in-hospital mortality, were remaining consistent, with AKI of HR 0.72, (95% CI 0.53–0.97; P = 0.03), and non-AKI of HR 0.57 (95% CI 0.35–0.95; P = 0.03), as shown in Fig. 3. The gene discussed is BCR; the disease is acute kidney injury.