Dapagliflozin in lupus nephritis: renal and hematologic outcomes from a randomized controlled trial

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ID: 320445
2026
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Abstract
Abstract Background Lupus nephritis (LN) remains a major cause of chronic kidney disease (CKD) and end-stage renal disease despite advances in immunosuppressive therapy. Sodium–glucose cotransporter-2 inhibitors (SGLT2i) confer renal protection in diabetic and non-diabetic CKD and have been associated with increases in hemoglobin levels, but their renal and hematologic effects in immune-mediated glomerulopathies such as LN are not well defined. Objective To evaluate the renal and hematologic effects, efficacy, and safety of dapagliflozin as adjunctive therapy in patients with lupus nephritis. Methods In this randomized, double-blind, placebo-controlled trial, 79 adult patients with biopsy-proven LN and estimated glomerular filtration rate (eGFR) >30 mL/min/1.73 m² were randomized to receive dapagliflozin 10 mg/day (n = 38) or placebo (n = 41) for 12 months in addition to standard immunosuppressive therapy. The primary renal endpoint was percentage change in 24-hour urinary protein excretion. Secondary renal outcomes included change in eGFR. Hematologic parameters assessed at baseline and 12 months included hemoglobin, erythropoietin, hepcidin, ferritin, and transferrin saturation. The primary analysis used analysis of covariance (ANCOVA) with adjustment for baseline values and clinically relevant covariates including age and background immunosuppressive therapy. Sensitivity analyses using log-transformed proteinuria were also performed. Additional analyses evaluated adjusted 12-month eGFR and eGFR slope. Results At 12 months, dapagliflozin was associated with a numerical reduction in proteinuria compared with placebo; however, this difference did not reach statistical significance. Adjusted analyses using ANCOVA confirmed the absence of a significant treatment effect. No significant differences were observed in eGFR, eGFR slope, or hematologic parameters. Conclusion In this randomized controlled trial, dapagliflozin was associated with a numerical reduction in proteinuria that did not reach statistical significance after adjustment for baseline characteristics and background immunosuppressive therapy. No significant effect on kidney function, eGFR slope, or hematologic parameters was observed. These findings suggest a possible signal that requires confirmation in larger, adequately powered, longer-duration studies. Trial registration ClinicalTrials.gov, NCT05748925. Registered 28 February 2023–Retrospectively registered, https://register.clinicaltrials.gov/prs/beta/studies/S000CWI200000138/recordSummary
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Authors Nourelsabah Mohamed, Karem N Zayed, Muhammed Ahmed Elhadedy, M. Badawi, Wael I. Mortada, Kareem A. Nabieh, Mohamed Sobh, Ayman F Refaie
Journal clinical kidney journal
Year 2026
DOI
10.1093/ckj/sfag231
URL
https://doi.org/10.1093/ckj/sfag231
Keywords Keywords not found

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