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LN Complete Renal Response Definition — ESENeph MCQ

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ModerateGlomerulonephritisLN Complete Renal Response DefinitionESENeph

A 30-year-old woman with lupus nephritis Class IV on induction Mycophenolate and Glucocorticoids has rising creatinine at 3 months. Her proteinuria has not improved. Anti-dsDNA remains elevated and C3 remains low. According to KDIGO 2024, what defines a complete clinical renal response (CRR)?

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Correct answer: E — Proteinuria <0.5 g/day and stable/improved eGFR

KDIGO 2024 LN guideline defines complete clinical renal response (CRR) as: uPCR <50 mg/mmol (approximately proteinuria <0.5 g/day) AND stabilised or improved eGFR (within 10% of baseline or pre-flare level). Partial response is defined as ≥50% reduction in proteinuria with stable eGFR. Failure to achieve at least a partial response by 6-12 months should prompt consideration of treatment change (switch induction regimen, add Belimumab/CNI, or consider repeat biopsy). Her failure to improve at 3 months warrants close monitoring but not necessarily immediate change.

Reference: https://guidelines.ukkidney.org