| 
      AUC:    Area Under the Curve; CI: Confidence Interval; LB: Lower Bound; UB: Upper    Bound; C3: Complement 3; C4: Complement 4; uPCI: Urine Protein Creatinine Index;    SLEDAI-2K: Systemic Lupus Erythematosus Disease Activity Index-2K
        |  | Baseline | 2 months | 4 months |  
        |  |  |  | 95% CI |  |  | 95% CI |  |  | 95% CI |  
        | Variables | AUC | p | LB | UB | AUC | p | LB | UB | AUC | p | LB | UB |  
        | uNGAL | 0.83 | 0.001 | 0.74 | 0.92 | 0.70 | 0.002 | 0.59 | 0.81 | 0.79 | <0.001 | 0.68 | 0.90 |  
        | Serum albumin | 0.23 | 0.004 | 0.13 | 0.33 | 0.24 | <0.001 | 0.14 | 0.35 | 0.23 | <0.001 | 0.12 | 0.34 |  
        | Serum creatinine | 0.59 | 0.14 | 0.46 | 0.72 | 0.57 | 0.25 | 0.43 | 0.71 | 0.70 | 0.003 | 0.57 | 0.84 |  
        | eGFR | 0.40 | 0.15 | 0.27 | 0.53 | 0.40 | 0.16 | 0.27 | 0.54 | 0.29 | 0.004 | 0.16 | 0.43 |  
        | Anti dsDNA Ab titres | 0.48 | 0.78 | 0.35 | 0.61 | 0.47 | 0.74 | 0.34 | 0.61 | 0.53 | 0.71 | 0.35 | 0.70 |  
        | Serum C3 | 0.39 | 0.09 | 0.26 | 0.51 | 0.46 | 0.56 | 0.33 | 0.58 | 0.39 | 0.18 | 0.25 | 0.53 |  
        | Serum C4 | 0.43 | 0.35 | 0.30 | 0.56 | 0.42 | 0.27 | 0.30 | 0.55 | 0.46 | 0.67 | 0.30 | 0.62 |  
        | Haematuria | 0.62 | 0.08 | 0.48 | 0.76 | 0.54 | 0.51 | 0.41 | 0.67 | 0.62 | 0.08 | 0.48 | 0.76 |  
        | Proteinuria (uPCI) | 0.94 | <0.001 | 0.90 | 0.99 | 0.92 | <0.001 | 0.85 | 0.99 | 0.88 | <0.001 | 0.78 | 0.97 |  
        | SLEDAI-2K (renal score) | 0.96 | <0.001 | 0.90 | 1 | 0.84 | <0.001 | 0.75 | 0.92 | 0.84 | <0.001 | 0.75 | 0.93 |  |