PMID- 38106570 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20231219 IS - 2468-0249 (Electronic) IS - 2468-0249 (Linking) VI - 8 IP - 12 DP - 2023 Dec TI - Efficacy and Safety of Iptacopan in Patients With C3 Glomerulopathy. PG - 2754-2764 LID - 10.1016/j.ekir.2023.09.017 [doi] AB - INTRODUCTION: Complement 3 glomerulopathy (C3G) is a rare inflammatory kidney disease mediated by dysregulation of the alternative complement pathway. No targeted therapy exists for this aggressive glomerulonephritis. Efficacy, safety, tolerability, pharmacokinetics (PK), and pharmacodynamics (PD) (measured by complement biomarkers) of iptacopan were assessed in patients with C3G. METHODS: In this phase 2, multicenter, open-label, single-arm, nonrandomized study, adults with biopsy-proven, native kidney C3G (native cohort) and kidney transplant recipients with C3G recurrence (recurrent kidney transplant [KT] cohort) received iptacopan twice daily (bid) for 84 days (days 1-21: 10-100 mg; days 22-84: 200 mg). The primary end point was the urine protein-to-creatinine ratio (UPCR; native cohort) and the change in the C3 deposit score of kidney biopsy (recurrent KT cohort). The complement pathway measures included Wieslab assay, soluble C5b9, and serum C3 levels. RESULTS: A total of 27 patients (16 native cohort and 11 recurrent KT cohort) were enrolled and all completed the study. In the native cohort, UPCR levels decreased by 45% from baseline to week 12 (P = 0.0003). In the recurrent KT cohort, the median C3 deposit score decreased by 2.50 (scale: 0-12) on day 84 versus baseline (P = 0.03). Serum C3 levels were normalized in most patients; complement hyperactivity observed pretreatment was reduced. Severe adverse events (AEs) included post-biopsy hematuria and hyperkalemia. No deaths occurred during the study. CONCLUSION: Iptacopan resulted in statistically significant and clinically important reductions in UPCR and normalization of serum C3 levels in the native cohort and reduced C3 deposit scores in the recurrent KT cohort with favorable safety and tolerability. (ClinicalTrials.gov identifier: NCT03832114). CI - (c) 2023 International Society of Nephrology. Published by Elsevier Inc. FAU - Wong, Edwin AU - Wong E AD - National Renal Complement Therapeutics Centre, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle Upon Tyne, UK. AD - Translational and Clinical Research Institute, Newcastle University, Newcastle Upon Tyne, UK. FAU - Nester, Carla AU - Nester C AD - The University of Iowa Stead Family Children's Hospital, Iowa City, Iowa, USA. FAU - Cavero, Teresa AU - Cavero T AD - Nephrology Department, University Hospital Doce de Octubre, Madrid, Spain. FAU - Karras, Alexandre AU - Karras A AD - Department of Nephrology, Hopital Europeen Georges-Pompidou, APHP, Paris, France. FAU - Le Quintrec, Moglie AU - Le Quintrec M AD - Service de Nephrologie et Transplantation Renale, Centre Hospitalier Universitaire de Montpellier, Montpellier, France. FAU - Lightstone, Liz AU - Lightstone L AD - Centre for Inflammatory Disease, Department of Immunology and Inflammation, Imperial College London, London, UK. FAU - Eisenberger, Ute AU - Eisenberger U AD - Department of Nephrology, University Hospital Essen, University Duisburg-Essen, Essen, Germany. FAU - Soler, Maria Jose AU - Soler MJ AD - Nephrology Department, Vall d'Hebron University Hospital, Vall d'Hebron Institute of Research, CSUR National Unit of Expertise for Complex Glomerular Diseases of Spain, Barcelona, Spain. FAU - Kavanagh, David AU - Kavanagh D AD - National Renal Complement Therapeutics Centre, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle Upon Tyne, UK. AD - Translational and Clinical Research Institute, Newcastle University, Newcastle Upon Tyne, UK. FAU - Daina, Erica AU - Daina E AD - Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Milan, Italy. FAU - Praga, Manuel AU - Praga M AD - Instituto de Investigacion Hospital 12 de Octubre (i+12), Madrid, Spain. FAU - Medjeral-Thomas, Nicholas R AU - Medjeral-Thomas NR AD - Centre for Inflammatory Disease, Department of Immunology and Inflammation, Imperial College London, London, UK. FAU - Gackler, Anja AU - Gackler A AD - Department of Nephrology, University Hospital Essen, University Duisburg-Essen, Essen, Germany. FAU - Garcia-Carro, Clara AU - Garcia-Carro C AD - Nephrology Department, Vall d'Hebron University Hospital, Vall d'Hebron Institute of Research, CSUR National Unit of Expertise for Complex Glomerular Diseases of Spain, Barcelona, Spain. FAU - Biondani, Andrea AU - Biondani A AD - Novartis Institutes for BioMedical Research, Translational Medicine, Novartis AG, Basel, Switzerland. FAU - Chaperon, Frederique AU - Chaperon F AD - Novartis Institutes for BioMedical Research, Translational Medicine, Novartis AG, Basel, Switzerland. FAU - Kulmatycki, Kenneth AU - Kulmatycki K AD - Novartis Institutes for BioMedical Research, Cambridge, Massachusetts, USA. FAU - Milojevic, Julie AU - Milojevic J AD - Novartis Institutes for BioMedical Research, Translational Medicine, Novartis AG, Basel, Switzerland. FAU - Webb, Nicholas J A AU - Webb NJA AD - Novartis Institutes for BioMedical Research, Translational Medicine, Novartis AG, Basel, Switzerland. FAU - Nidamarthy, Prasanna Kumar AU - Nidamarthy PK AD - Novartis Healthcare Pvt. Ltd., Hyderabad, India. FAU - Junge, Guido AU - Junge G AD - Novartis Institutes for BioMedical Research, Translational Medicine, Novartis AG, Basel, Switzerland. FAU - Remuzzi, Giuseppe AU - Remuzzi G AD - Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Milan, Italy. LA - eng SI - ClinicalTrials.gov/NCT03832114 PT - Journal Article DEP - 20230922 PL - United States TA - Kidney Int Rep JT - Kidney international reports JID - 101684752 PMC - PMC10719607 OTO - NOTNLM OT - complement 3 glomerulopathy OT - inflammatory kidney disease OT - iptacopan OT - kidney transplant OT - urine protein-to-creatinine ratio EDAT- 2023/12/18 06:41 MHDA- 2023/12/18 06:42 PMCR- 2023/09/22 CRDT- 2023/12/18 04:42 PHST- 2023/07/14 00:00 [received] PHST- 2023/08/21 00:00 [revised] PHST- 2023/09/11 00:00 [accepted] PHST- 2023/12/18 06:42 [medline] PHST- 2023/12/18 06:41 [pubmed] PHST- 2023/12/18 04:42 [entrez] PHST- 2023/09/22 00:00 [pmc-release] AID - S2468-0249(23)01510-3 [pii] AID - 10.1016/j.ekir.2023.09.017 [doi] PST - epublish SO - Kidney Int Rep. 2023 Sep 22;8(12):2754-2764. doi: 10.1016/j.ekir.2023.09.017. eCollection 2023 Dec.