PMID- 38025230 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20231201 IS - 2468-0249 (Electronic) IS - 2468-0249 (Linking) VI - 8 IP - 11 DP - 2023 Nov TI - Clinical Safety and Efficacy of Pegcetacoplan in a Phase 2 Study of Patients with C3 Glomerulopathy and Other Complement-Mediated Glomerular Diseases. PG - 2284-2293 LID - 10.1016/j.ekir.2023.08.033 [doi] AB - INTRODUCTION: Dysregulated complement activation is likely the primary driver of disease in C3 glomerulopathy (C3G) and contributes to other complement-mediated diseases, including immunoglobulin A nephropathy (IgAN), lupus nephritis (LN), and primary membranous nephropathy (PMN). No complement inhibitors are proven to halt disease progression in these diseases. Pegcetacoplan, a targeted C3 and C3b inhibitor, may mitigate complement-mediated kidney damage in C3G and other glomerular diseases in which complement may have a pathogenic role. METHODS: This open-label, phase 2, 48-week study evaluated the preliminary efficacy and safety of subcutaneous pegcetacoplan for patients with complement-mediated glomerular diseases. The primary end point was proteinuria reduction, measured as 24-hour urine protein-to-creatinine ratio. Secondary end points included remission status, changes in estimated glomerular filtration rate (eGFR), and pharmacodynamic biomarkers. Treatment-emergent adverse events (TEAEs) were monitored. RESULTS: Efficacy results for the C3G cohort are reported herein, along with safety results for the study population. In the C3G cohort, mean proteinuria reduction from baseline to week 48 was 50.9% in the intent-to-treat (ITT) population (n = 7) and 65.4% in the per-protocol (PP) population (n = 4). Mean serum albumin normalized and mean eGFR was stable over 48 weeks. Mean serum C3 levels increased 6-fold and mean soluble C5b-9 levels decreased by 57.3% at week 48. The most common adverse events (AEs) were upper respiratory tract infection, injection site erythema, nausea, and headache. No meningitis or sepsis cases were reported, and no serious treatment-related AEs were observed. CONCLUSION: Pegcetacoplan may provide therapeutic benefit for C3G and has a favorable safety profile across the 4 glomerular diseases studied. CI - (c) 2023 International Society of Nephrology. Published by Elsevier Inc. FAU - Dixon, Bradley P AU - Dixon BP AD - Renal Section, Department of Pediatrics, University of Colorado School of Medicine, Aurora, Colorado, USA. FAU - Greenbaum, Larry A AU - Greenbaum LA AD - Emory University and Children's Healthcare of Atlanta, Atlanta, Georgia, USA. FAU - Huang, Liwei AU - Huang L AD - Tidewater Kidney Specialists, Inc, Chesapeake, Virginia, USA. FAU - Rajan, Sandeep AU - Rajan S AD - Vanderbilt University Medical Center, Nashville, Tennessee, USA. FAU - Ke, Chunlei AU - Ke C AD - Apellis Pharmaceuticals, Inc., Waltham, Massachusetts, USA. FAU - Zhang, Yiwei AU - Zhang Y AD - Apellis Pharmaceuticals, Inc., Waltham, Massachusetts, USA. FAU - Li, Li AU - Li L AD - Apellis Pharmaceuticals, Inc., Waltham, Massachusetts, USA. LA - eng PT - Journal Article DEP - 20230825 PL - United States TA - Kidney Int Rep JT - Kidney international reports JID - 101684752 PMC - PMC10658235 OTO - NOTNLM OT - C3 glomerulopathy OT - complement OT - end-stage kidney disease OT - glomerulonephritis OT - pegcetacoplan OT - proteinuria EDAT- 2023/11/29 18:42 MHDA- 2023/11/29 18:43 PMCR- 2023/08/25 CRDT- 2023/11/29 16:25 PHST- 2023/06/23 00:00 [received] PHST- 2023/08/15 00:00 [revised] PHST- 2023/08/21 00:00 [accepted] PHST- 2023/11/29 18:43 [medline] PHST- 2023/11/29 18:42 [pubmed] PHST- 2023/11/29 16:25 [entrez] PHST- 2023/08/25 00:00 [pmc-release] AID - S2468-0249(23)01470-5 [pii] AID - 10.1016/j.ekir.2023.08.033 [doi] PST - epublish SO - Kidney Int Rep. 2023 Aug 25;8(11):2284-2293. doi: 10.1016/j.ekir.2023.08.033. eCollection 2023 Nov.