A Study to Learn About the Effects of Felzartamab Infusions on Adults With Immunoglobulin A Nephropathy (IgAN)
NCT ID: NCT06935357
Last Updated: 2025-11-10
Study Results
The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.
Basic Information
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RECRUITING
PHASE3
454 participants
INTERVENTIONAL
2025-05-08
2029-06-05
Brief Summary
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The main goal of the study is to learn about the effect felzartamab has on proteinuria. The main question that researchers want to answer is:
• How much does the amount of protein in the urine change from the start of the study to Week 36?
Researchers will learn about the effect felzartamab has on the kidneys' ability to filter blood. They will also learn more about the safety of felzartamab and how it is processed by the body.
The study will be done as follows:
* Participants will be screened to check if they can join the study.
* Participants will be randomized to receive either felzartamab or a placebo. A placebo looks like the study drug but contains no real medicine.
* Neither the researchers nor the participants will know what the participants will receive.
* Participants will receive felzartamab or placebo as intravenous (IV) infusions. The treatment period will last 24 weeks.
* Afterwards, participants will enter a follow-up period which will last 80 weeks.
* In total, participants will have 17 study visits. Participants will stay in the study for about 2 years.
Detailed Description
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Conditions
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Study Design
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RANDOMIZED
PARALLEL
TREATMENT
QUADRUPLE
Study Groups
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Cohort 1
Participants will receive several intravenous (IV) doses of felzartamab.
Felzartamab
Administered IV
Cohort 2
Participants will receive several IV doses of placebo.
Placebo
Administered IV
Cohort 3
Participants with an estimated glomerular filtration rate (eGFR) ≥ 20 and \<30 milliliter per minute per 1.73 square meter (mL/min/1.73m\^2) will receive several IV doses of felzartamab.
Felzartamab
Administered IV
Cohort 4
Participants with an eGFR ≥ 20 and \<30 mL/min/1.73m\^2 will receive several IV doses of placebo.
Placebo
Administered IV
Interventions
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Felzartamab
Administered IV
Placebo
Administered IV
Other Intervention Names
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Eligibility Criteria
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Inclusion Criteria
* An eGFR ≥ 30 mL/min/1.73m\^2 at Screening as calculated using the 2021 chronic kidney disease epidemiology (CKD-EPI) creatinine formula. An eGFR of ≥ 20 and \< 30 mL/min/1.73m\^2 is acceptable for the cohorts 3 and 4.
* Proteinuria of ≥ 1.0 gram per day (g/day) or UPCR ≥0.8 gram per gram (g/g) as assessed by an adequate 24-hour urine collection.
* Clinically stable on a maximally tolerated dose or maximally approved dose of angiotensin-converting enzyme inhibitors (ACEI) or angiotensin receptor blockers (ARB) for at least 12 weeks prior to Screening, or intolerant of ACEI or ARB. If intolerant, this must be discussed with the Medical Monitor prior to randomization. Participants may also be using sodium-glucose cotransporter-2 inhibitors (SGLT2is), endothelin receptor antagonists (ERAs) approved for the treatment of IgAN, dual endothelin angiotensin receptor antagonist (DEARAs) approved for the treatment of IgAN, and/or mineralocorticoid receptor antagonists (MRAs) as long as the dose is stable for at least 12 weeks prior to Screening. Participants should remain on stable doses of these background medications for the duration of the study. Once the ICF is signed and thereafter, the doses cannot be changed during the study nor the drugs discontinued except if deemed related to an AE. Participants using sparsentan will not be permitted to use simultaneous ACEI or ARB medication.
Exclusion Criteria
* History of rapidly progressive variant of IgAN, defined as eGFR loss by \> 50% per 3 months and not explained by changes in renin-angiotensin system (RAS) blockade or other factors.
* Nephrotic syndrome presumed to be due to minimal change disease (MCD) variant.
* Concomitant other progressive glomerulonephritis or non-immunologic glomerular disease such as diabetic nephropathy.
* Type 2 diabetes mellitus with Hemoglobin A1c (HbA1c) \> 8% at Screening, or evidence of diabetic nephropathy on biopsy, history of diabetic microvascular or macrovascular disease (eg, diabetic retinopathy, peripheral neuropathy).
* Any diagnosed or suspected immunosuppressed or immunodeficient state such as asplenia, human immunodeficiency virus (HIV), primary immunodeficiencies, organ or bone marrow transplantation, with the exception of corneal transplants.
* Previously treated with immunosuppressive or other immunomodulatory agents such as but not limited to cyclophosphamide, rituximab, infliximab, eculizumab, canakinumab, mycophenolate mofetil (MMF) or mycophenolate sodium (MPS), cyclosporine, tacrolimus, sirolimus, everolimus, or systemic corticosteroids exposure (\> 7.5 milligrams per deciliter \[mg/d\] prednisone/prednisolone equivalent) within 4 months (or 12 months for rituximab) prior to Screening.
* Participants currently treated with oral budesonide. Participants who have stopped this therapy ≥ 4 months prior to Screening may be eligible.
* Active clinically significant infections, known history of recurrent clinically significant infection, or Screening laboratory evidence consistent with an active infection, or IV anti-infectives (antibacterials, antiviral or antifungals). Participants with a history of opportunistic infections are excluded.
* Hypogammaglobulinemia: Serum Immunoglobin G (IgG) \< 6.0 gram per litre (g/L), at Screening.
18 Years
ALL
No
Sponsors
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Human Immunology Biosciences, Inc. (HI-Bio)
UNKNOWN
Biogen
INDUSTRY
Responsible Party
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Principal Investigators
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Medical Director
Role: STUDY_DIRECTOR
Biogen
Locations
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Applied Research Center of Arkansas
Little Rock, Arkansas, United States
Kidney & Hypertension Center - Apple Valley
Apple Valley, California, United States
Scripps Green Hospital
Carlsbad, California, United States
FOMAT Medical Research - FOMAT - PPDS
Oxnard, California, United States
North America Research Institute-San Dimas
San Dimas, California, United States
Nova Clinical Research, LLC
Bradenton, Florida, United States
Royal Research, Corp.
Hollywood, Florida, United States
Central Florida Kidney Specialists
Orlando, Florida, United States
American Clinical Trials LLC
Acworth, Georgia, United States
Brigham and Women's Hospital
Boston, Massachusetts, United States
Elixia Health - Michigan Kidney Consultants, LLC - Elixia - PPDS
Pontiac, Michigan, United States
Midwest Nephrology Associates,Inc.
City of Saint Peters, Missouri, United States
James J Peters Veterans Administration Medical Center - NAVREF - PPDS
The Bronx, New York, United States
Knoxville Kidney Center, PLLC
Knoxville, Tennessee, United States
Texas Kidney Institute - Dallas
Dallas, Texas, United States
Provecta Research Network
Houston, Texas, United States
R & H Clinical Research
Katy, Texas, United States
INECO Neurociencias Oroño
Rosario, Santa Fe Province, Argentina
CIMER-Centro Integral de Medicina Respiratoria
San Miguel de Tucumán, Tucumán Province, Argentina
Consultorios Médicos Dr. Doreski - Fundacion Respirar - PPDS
Buenos Aires, , Argentina
DOM Centro de Reumatología
Buenos Aires, , Argentina
ZOL Genk - campus Sint-Jan
Genk, Limburg, Belgium
Centro Mineiro de Pesquisa - CMiP
Juiz de Fora, Minas Gerais, Brazil
Medical Center Medconsult Pleven - Lovech Branch
Lovech, , Bulgaria
Medical Center Hera EOOD, Montana - Hera Clinics - PPDS
Montana, , Bulgaria
Medical Center Medconsult Pleven OOD
Pleven, , Bulgaria
Peking University First Hospital - Changqiao Campus
Beijing, Beijing Municipality, China
Beijing Tsinghua Changgung Hospital
Beijing, Beijing Municipality, China
Gansu Provincial Hospital
Lanzhou, Gansu, China
The Affiliated Hospital of Guizhou Medical University
Guiyang, Guizhou, China
Cangzhou Central Hospital
Cangzhou, Hebei, China
The Second Hospital of Hebei Medical University - Main
Shijiazhuang, Hebei, China
The First Affiliated Hospital of Henan Science and Technology University - Jinghua Campus
Luoyang, Henan, China
The Second Affiliated Hospital of Nanjing Medical University
Nanjing, Jiangsu, China
Wuxi Peoples Hospital
Wuxi, Jiangsu, China
Shanghai General Hospital - North Campus
Shanghai, Shanghai Municipality, China
Sichuan Academy of Medical Sciences & Sichuan Provincial People's Hospital
Chengdu, Sichuan, China
Jinhua Municipal Central Hospital
Jinhua, Zhejiang, China
Clinica de la Costa S.A.S. - PPDS
Barranquilla, Atlántico, Colombia
Healthy Medical Center S.A.S.
Zipaquirá, Cundinamarca, Colombia
CHU de Strasbourg - Nouvel Hôpital Civil
Strasbourg, Bas-Rhin, France
CHU de Besançon
Besançon, Dobus, France
CHU de Bordeaux - Hôpital Pellegrin
Bordeaux, Gironde, France
CHU de Reims - Hôpital Maison Blanche
Reims, Grand Est, France
GHRMSA - Hôpital Emile Muller
Mulhouse, Haut-Rhin, France
Hopital Foch
Suresnes, Hauts-de-Seine, France
CHRU d'Orleans- Hôpital de La Source
Orléans, Loiret, France
CHU de Nîmes - Hopital Universitaire Caremeau
Nîmes Cédex 9, Occitanie, France
AP-HP - Hôpital Henri Mondor
Créteil, Val-de-Marne, France
Centre Hospitalier Departemental de Vendee
La Roche-sur-Yon, Vendée, France
CHU Amiens Picardie - Site Sud
Dreuil-lès-Amiens, , France
AP-HP - Hôpital Saint-Louis
Paris, , France
AP-HP - Hopital Tenon
Paris, , France
Osmania General Hospital
Hyderabad, Andhra Pradesh, India
Zydus Hospital
Ahmedabad, Gujarat, India
Government Medical College, Kozhikode
Kozhikode, Kerala, India
Trivandrum Medical College Hospital
Trivandrum, Kerala, India
Centro di Ricerche Cliniche per le Malattie Rare Aldo e Cele Daccò
Ranica, Lombardy, Italy
Azienda Ospedaliero Universitaria Maggiore della Carità
Novara, Piedmont, Italy
Fujita Health University Hospital
Toyoake-shi, Aiti, Japan
National Hospital Organization Chiba Medical Center Chibahigashi National Hospital
Chiba, Chiba, Japan
Juntendo University Urayasu Hospital
Urayasu-Shi, Chiba, Japan
Hokkaido University Hospital
Sapporo, Hokkaido, Japan
Hospital of the University of Occupational and Environmental Health, Japan
Kitakyushu-shi, Hukuoka, Japan
Fukushima Medical University Hospital
Fukushima, Hukusima, Japan
Toranomon Hospital Kajigaya
Kawasaki-shi, Kanagawa, Japan
Kitasato University Hospital
Sagamihara-shi, Kanagawa, Japan
Tohoku Medical and Pharmaceutical University Hospital
Sendai, Miyagi, Japan
Hamamatsu University Hospital
Hamamatsu, Sizouka, Japan
Showa Medical University Hospital
Shinagawa-ku, Tokyo, Japan
Ikeda Municipal Hospital
Ikeda-shi, Ôsaka, Japan
Osaka University Hospital
Suita-shi, Ôsaka, Japan
Hospital Tengku Ampuan Afzan
Kuantan, Pahang, Malaysia
Hospital Raja Permaisuri Bainun
Perak, Pahang, Malaysia
University Malaya Medical Centre
Lembah Pantai, WilayahPersekutuan KualaLumpur, Malaysia
SCM Clinic - Prywatny Szpital Specjalistyczny
Krakow, Lesser Poland Voivodeship, Poland
Twoja Przychodnia - Szczecinskie Centrum Medyczne
Szczecin, West Pomeranian Voivodeship, Poland
ULS de Lisboa Ocidental, EPE - Hospital Santa Cruz
Carnaxide, Lisbon District, Portugal
ULS da Região de Aveiro, EPE - Hospital Infante D. Pedro
Aveiro, , Portugal
Centro Clínico Académico, Braga - Hospital de Braga
Braga, , Portugal
ULS da Arrábida, EPE - Hospital de São Bernardo
Setúbal, , Portugal
FDI Clinical Research
San Juan, , Puerto Rico
Pusan National University Hospital
Busan, Gwangyeogsi, South Korea
Hallym University Sacred Heart Hospital
Anyang-si, Gyeonggido, South Korea
Seoul National University Bundang Hospital
Seongnam-si, Gyeonggido, South Korea
Ajou University Hospital
Suwon, Gyeonggido, South Korea
Severance Hospital Yonsei University Health System
Seoul, Seoul Teugbyeolsi, South Korea
Inje University Haeundae Paik Hospital
Busan, , South Korea
Seoul National University Hospital
Seoul, , South Korea
Samsung Medical Center
Seoul, , South Korea
Hospital Universitario A Coruña
A Coruña, Galicia, Spain
Hospital Universitario Fundacion Alcorcon
Alcorcón, Madrid, Spain
Hospital Universitario de Getafe
Getafe, Madrid, Spain
Hospital Universitario 12 de Octubre
Madrid, , Spain
National Cheng Kung University Hospital
Dawan, Taiwan, Province of China, Taiwan
Mackay Memorial Hospital-Taipei branch
Taipei, Taiwan, Province of China, Taiwan
Kaohsiung Medical University - Chung-Ho Memorial Hospital
Kaohsiung City, , Taiwan
Taipei Medical University Shuang Ho Hospital
New Taipei City, , Taiwan
Royal Preston Hospital - NWCRN- PPDS
Preston, Lancashire, United Kingdom
Leicester General Hospital
Leicester, Leicestershire, United Kingdom
Countries
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Central Contacts
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Facility Contacts
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Other Identifiers
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2024-519345-30-00
Identifier Type: OTHER
Identifier Source: secondary_id
299IG301
Identifier Type: -
Identifier Source: org_study_id