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  • Title: Eculizumab as a treatment for C3 glomerulopathy: a single-center retrospective study.
    Author: Welte T, Arnold F, Westermann L, Rottmann FA, Hug MJ, Neumann-Haefelin E, Ganner A.
    Journal: BMC Nephrol; 2023 Jan 11; 24(1):8. PubMed ID: 36631797.
    Abstract:
    BACKGROUND: C3 Glomerulopathy (C3G) is a rare glomerular disease caused by dysregulation of the complement pathway. Based on its pathophysiology, treatment with the monoclonal antibody eculizumab targeting complement C5 may be a therapeutic option. Due to the rarity of the disease, observational data on the clinical response to eculizumab treatment is scarce. METHODS: Fourteen patients (8 female, 57%) treated for C3 glomerulopathy at the medical center of the University of Freiburg between 2013 and 2022 were included. Subjects underwent biopsy before enrollment. Histopathology, clinical data, and response to eculizumab treatment were analyzed. Key parameters to determine the primary outcome were changes of estimated glomerular filtration rate (eGFR) over time. Positive outcome was defined as > 30% increase, stable outcome as ±30%, negative outcome as decrease > 30% of eGFR. RESULTS: Eleven patients (78.8%) were treated with eculizumab, three received standard of care (SoC, 27.2%). Median follow-up time was 68 months (IQR: 45-98 months). Median eculizumab treatment duration was 10 months (IQR 5-46 months). After eculizumab treatment, five patients showed a stable outcome, six patients showed a negative outcome. Among patients receiving SoC, one patient showed a stable outcome, two patients showed a negative outcome. CONCLUSIONS: The benefit of eculizumab in chronic progressive C3 glomerulopathy is limited.
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