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Title: Sustained complete renal remission is a predictor of reduced mortality, chronic kidney disease and end-stage renal disease in lupus nephritis.
Author: Pakchotanon R, Gladman DD, Su J, Urowitz MB.
Journal: Lupus; 2018 Mar; 27(3):468-474. PubMed ID: 28857717.
Abstract:
Objective The objective of this paper is to identify the relationship between patients with lupus nephritis (LN) who achieve sustained complete renal remission (CR) and renal outcome and survival. Methods From a longitudinal cohort study we identified patients with LN with CR. We compared the outcomes of patients who achieved sustained CR for at least five years (Group A) with those less than five years (Group B). The outcomes were death, SLICC/ACR damage index (SDI), renal flare, end-stage renal disease (ESRD) or estimated glomerular filtration rate (eGFR) < 50 ml/min, and doubling of serum creatinine. Regression analyses were used to identify predictors of the outcomes. Results A total of 345 patients were identified, 132 patients in Group A and 213 patients in Group B. The duration of CR in Group A was 11.76 ± 7.34 years but only 1.24 ± 1.24 years in Group B ( p < 0.001). Death, increasing renal SDI, renal flare, renal transplantation, ESRD or eGFR < 50 ml/min, and doubling of serum creatinine in Group A were significantly lower than Group B. Multivariable analysis revealed that Group A patients were at a lower risk of death (hazard ratio (HR) = 0.20; 95% confidence interval (CI), 0.07-0.61; p = 0.004), increasing renal SDI (HR = 0.41; 95% CI, 0.21-0.76; p = 0.01), developing ESRD or eGFR < 50 ml/min (HR = 0.27; 95% CI, 0.12-0.61; p = 0.001), and doubling of serum creatinine (HR = 0.29; 95% CI, 0.14-0.61; p = 0.001) compared with Group B. Conclusion Sustained CR for at least five years is a predictor of better prognosis in patients with LN.

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