A Study of Mezagitamab in Adults With Kidney Condition Called IgA Nephropathy
Sponsor: Takeda • ClinicalTrials.gov ID: NCT06963827
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Immunoglobulin A nephropathy (IgAN) is a kidney condition. It happens when the body's immune system creates groups of proteins (called immune complexes) that build-up in the kidneys causing swelling (inflammation). Over time, this inflammation may lead to kidney damage and cause the kidneys to no longer work properly. The main aim of this study is to check how well mezagitamab changes protein levels in the urine (proteinuria) compared to placebo in adults with primary IgAN. A placebo looks like medicine but doesn't have any active ingredients in it. Other aims are to check how safe mezagitamab is and how well participants with primary IgAN can tolerate it compared to placebo, and to find out if and how well mezagitamab continues to maintain kidney function over the long term compared to placebo. Participants will be placed in 1 of the 2 treatment groups; the main group and the open-label group. In the main group, participants will be placed by chance in either the mezagitamab or placebo treatment group at a 2:1 ratio. This means that out of 3 participants, 2 will receive mezagitamab and 1 will receive placebo. Participants can be in the study for 2 years (104 weeks). Participants will receive study treatment for about half a year (22 weeks) and then be observed for the remainder of the study (about 1.5 years). During observation, participants will continue to have check-ups about every month. In the open-label group, a small number of participants who either have lower levels of protein in their urine or have kidneys that do not filter the blood well, will receive mezagitamab treatment. This will include participants who have previously received mezagitamab in another study, TAK-079-1006. Every participant will receive mezagitamab in the same way as those in the main group receiving mezagitamab. During the study, participants will visit their study clinic several times.
Interventions
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Mezagitamab
(Drug)
Mezagitamab injections administered SC.
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Placebo
(Drug)
Mezagitamab-matching placebo injections administered SC.
Eligibility criteria
Conditions
Locations
- UAB Nephrology Research Clinic at Paula Building — Birmingham, Alabama, United States
- DCR Montgomery — Montgomery, Alabama, United States
- Panoramic Health - Southwest Kidney Institute, PLC — Surprise, Arizona, United States
- Panoramic Health - West Coast Kidney Institute (Fremont) — Fremont, California, United States
- Academic Medical Research Institute — Los Angeles, California, United States
- UCLA University of California Los Angeles — Los Angeles, California, United States
- University of California Irvine — Orange, California, United States
- Panoramic Health - Florida Kidney Physicians, LLC (Jacksonville) — Jacksonville, Florida, United States
- South Florida Research Institute — Lauderdale Lakes, Florida, United States
- Panoramic Health - Florida Kidney Physicians, LLC (Melbourne) — Melbourne, Florida, United States
- Bioresearch Partners — Miami, Florida, United States
- CTR Oakwater, LLC — Orlando, Florida, United States
- Bioresearch Partners — Pembroke Pines, Florida, United States
- Panoramic Health - Florida Kidney Physicians, LLC (Tampa) — Riverview, Florida, United States
- DCR Columbus — Columbus, Georgia, United States
- Panoramic Health - Southeast Kidney Associates — East Point, Georgia, United States
- CARE Institute - Boise Kidney — Boise, Idaho, United States
- Panoramic Health - RNA of Rockford, LLC dba Rockford Nephrology Associates — Rockford, Illinois, United States
- Northwest Louisiana Nephrology — Shreveport, Louisiana, United States
- Ingham Nephrology & Hypertension, P.C. — Lansing, Michigan, United States
- Elixia MKC — Pontiac, Michigan, United States
- Panoramic Health - Lake Michigan Nephrology, PLC — Saint Joseph, Michigan, United States
- DCR Edina — Edina, Minnesota, United States
- Elixia MNA — City of Saint Peters, Missouri, United States
- Clinical Research Consultants a JCCT Company — Kansas City, Missouri, United States
- Renal Medicine Associates - Frenova F1 — Albuquerque, New Mexico, United States
- Brookview Hills Research Associates, LLC — Winston-Salem, North Carolina, United States
- Panoramic Health - Kidney and Hypertension Center — Cincinnati, Ohio, United States
- Panoramic Health - Clinical Renal Associates, Ltd. — Media, Pennsylvania, United States
- Thomas Jefferson University — Philadelphia, Pennsylvania, United States
- Panoramic Health - Nephrology Associates, Inc. — East Providence, Rhode Island, United States
- Dallas Renal Group — Dallas, Texas, United States
- DCR - El Paso — El Paso, Texas, United States
- Houston Methodist Research Institute - Department of Medicine — Houston, Texas, United States
- Provecta Research Network — Houston, Texas, United States
- Nephrology Associates of Houston PLLC — Katy, Texas, United States
- Sun Research Institute — San Antonio, Texas, United States
- DCR San Antonio — San Antonio, Texas, United States
- Utah Kidney Research Institute — Salt Lake City, Utah, United States
- Panoramic Health - Virginia Nephrology Group — Arlington, Virginia, United States
- West Virginia University — Morgantown, West Virginia, United States
- Centro Medico Dra. Laura Maffei- Investigacion Clinica Aplicada — Ciudad Autonoma de Buenos Aires, Buenos Aires, Argentina
- Framingham Centro Medico — Buenos Aires, La Plata, Argentina
- Hospital Britanico de Buenos Aires — Ciudad Autonoma Buenos Aires, Argentina
- Clinica Privada Velez Sarsfield — Córdoba, Argentina
- South Western Sydney Local Health District - University of New South Wales - Liverpool Hospital — Liverpool, New South Wales, Australia
- Core Research Group — Milton, Queensland, Australia
- Eastern Health — Box Hill, Victoria, Australia
- Monash Heath - Monash University - Monash Medical Centre — Clayton, Victoria, Australia
- Western Health Sunshine Hospital — St Albans, Victoria, Australia
- Johannes Kepler Universitat Linz, Universitatsklinik fur Innere 2 — Linz, Austria
- Medizinische Universitat Wien (Medical University of Vienna - Austria) — Vienna, Austria
- Sheldon M. Chumir Health Centre — Calgary, Alberta, Canada
- London Health Sciences Centre — London, Ontario, Canada
- Sunnybrook Health Sciences Centre — Toronto, Ontario, Canada
- Peking University First Hospital — Beijing, Beijing Municipality, China
- Beijing Tsinghua Changgung Hospital — Changping, Beijing Municipality, China
- Zhongshan Hospital Xiamen University — Xiamen, Fujian, China
- Guangdong General Hospital — Guangzhou, Guangdong, China
- Peking University Shenzhen Hospital — Shenzhen, Guangdong, China
- The Third Xiangya Hospital of Central South University Yuelu District — Changsha, Hunan, China
- The First Affiliated Hospital of Baotou Medical College — Baotou, Inner Mongolia, China
- Zhongda Hospital Southeast University — Nanjing, Jiangsu, China
- Affiliated Hospital of Nantong University — Nantong, Jiangsu, China
- Wuxi People's Hospital — Wuxi, Jiangsu, China
- The First Affiliated Hospital of Nanchang University — Nanchang, Jiangxi, China
- Shandong University - Qilu Hospital — Jinan, Shandong, China
- Shanghai Jiao Tong University School of Medicine (SJTUSM) - Renji Hospital - Eastern Branch — Shanghai, Shanghai Municipality, China
- Ruijin Hospital of Shanghai Jiaotong University School of Medicine — Shanghai, Shanghai Municipality, China
- West China Hospital Sichuan University — Chengdu, Sichuan, China
- Sichuan Academy of Medical Sciences & Sichuan Provincial People's Hospital — Chengdu, Sichuan, China
- The Second People's Hospital of Yibin — Yibin, Sichuan, China
- The Second Affiliated Hospital, Zhejiang University, School of Medicine — Hangzhou, Zhejiang, China
- The First Affiliated Hospital of Ningbo University — Ningbo, Zhejiang, China
- Nemocnice AGEL Novy Jicin a.s — Nový Jičín, Moravskoslezsk Kraj, Czechia
- Fakultni nemocnice Olomouc — Olomouc, Czechia
- First Faculty of Medicine Charles University — Prague, Czechia
- Hospital Henri Mondor — Créteil, Paris, France
- CHU Bordeaux, CHU Pellegrin — Bordeaux, France
- CHU Limoges Service de Nephrology — Limoges, France
- Centre Hospitalier Universitaire de Montpellier (CHU Montpellier) - Hopital Lapeyronie — Montpellier, France
- CHU de Nantes — Nantes, France
- Hospital Tenon — Paris, France
- Uniklinik RWTH Aachen — Aachen, North Rhine-Westphalia, Germany
- Universitaetsklinikum Jena — Jena, Thuringia, Germany
- Universitaetsmedizin der Johannes - Gutenberg Universitaet Mainz — Mainz, Germany
- The University of Hong Kong - Department of Medicine — Hong Kong, Hong Kong Island, Hong Kong
- Semmelweis Egyetem - Belgyogyaszati es Onkologiai Klinika (I.sz. Belgyogyaszati Klinika) — Budapest, Hungary
- IRCCS Azienda Ospedaliero-Universitaria di Bologna — Bologna, Italy
- ASST degli Spedali Civili di Brescia - Spedali Civili di Brescia — Brescia, Italy
- IRCCS Ospedale Policlinico San Martino — Genoa, Italy
- Az Ospedaliera Universitaria Policlinico G Martino — Messina, Italy
- Fondazione IRCCS Ca Granda Ospedale Maggiore Policlinico — Milan, Italy
- Istituto Maugeri IRCCS Pavia — Pavia, Italy
- Azienda Unita Sanitaria Locale Piacenza (AUSL) Ospedale "Guglielmo da Saliceto — Piacenza, Italy
- AOU Citta della Salute e della Scienza di Torino — Torino, Italy
- Kasugai Municipal Hospital — Kasugai-Shi, Aichi-ken, Japan
- Japanese Red Cross Aichi Medical Center Nagoya Daini Hospital — Nagoya, Aichi-ken, Japan
- Fujita Health University Hospital — Toyoake-shi, Aichi-ken, Japan
- National Hospital Organization Chiba Medical Center Chibahigashi National Hospital — Chiba, Chiba, Japan
- Kyushu University Hospital — Fukuoka, Fukuoka, Japan
- Fukushima Medical University Hospital — Fukushima, Fukushima, Japan
- Hiroshima University Hospital — Hiroshima, Hiroshima, Japan
- Hokkaido University Hospital — Sapporo, Hokkaido, Japan
- Shonan Kamakura General Hospital — Kamakura-shi, Kanagawa, Japan
- Toranomon Hospital Kajigaya — Kawasaki-shi, Kanagawa, Japan
- Yokohama City University Hospital — Yokohama, Kanagawa, Japan
- Japan Community Health care Organization Sendai Hospital — Sendai, Miyagi, Japan
- Nara Medical University Hospital — Kashihara-shi, Nara, Japan
- Nara Prefecture General Medical Center — Nara, Nara, Japan
- Oita University Hospital — Yufu-shi, Oita Prefecture, Japan
- Medical Research Institute KITANO HOSPITAL, PIIF Tazuke-Kofuka — Osaka, Osaka, Japan
- Dokkyo Medical University Saitama Medical Center — Koshigaya-shi, Saitama, Japan
- Juntendo University Hospital — Bunkyo-ku, Tokyo, Japan
- Tokyo Medical University Hospital — Shinjuku-Ku, Tokyo, Japan
- University of Yamanashi Hospital — Chuo-shi, Yamanashi, Japan
- Universiti Kebangsaan Malaysia (UKM) - Medical Centre (Pusat Perubatan) (Hospital Canselor Tuanku Muhriz (HCTM)) — Kuala Lumpur, Kuala Lumpur, Malaysia
- Hospital Tengku Ampuan Afzan — Kuantan, Pahang, Malaysia
- Hospital Taiping — Taiping, Perak, Malaysia
- Hospital Sultan Idris Shah Serdang (Hospital Serdang) — Kajang, Selangor, Malaysia
- Sunway Medical Centre (SMC) — Subang Jaya, Selangor, Malaysia
- Universiti Malaya Medical Centre (UMMC) — Kuala Lumpur, Malaysia
- Amsterdam UMC - Locatie AMC (Academisch Medisch Centrum) — Amsterdam, North Holland, Netherlands
- Leids Universitair Medisch Center — Leiden, Netherlands
- Sint Antonius ziekenhuis Utrecht/Nieuwegein — Nieuwegein, Netherlands
- Radboud Universitair Medisch Centrum — Nijmegen, Netherlands
- UMC Utrecht — Utrecht, Netherlands
- Akershus University Hospital — Lorenskog, Akershus, Norway
- Sykehuset I Vestfold — Tønsberg, Vestfold, Norway
- Haukeland Universitetssjukehus — Bergen, Norway
- Sykehuset Ostfold — Grålum, Norway
- Stavanger Universitetssjukehus - Helse Stavanger HF — Stavanger, Norway
- Universitetssykehuset I Trondheim - St. Olavs Hospital - Nevroklinikken — Trondheim, Norway
- Nowy Szpital Sp Zo.o — Gmina Świecie, Poland
- SCM Sp. z o.o. — Krakow, Poland
- Indywidualna Specjalistyczna Praktyka Lekarska — Lodz, Poland
- 4th Military Clinical hospital /Polyclinic SP ZOZ — Wroclaw, Poland
- Singapore General Hospital — Singapore, Singapore
- Tan Tock Seng Hospital — Singapore, Singapore
- National University Hospital — Singapore, Singapore
- University Medical Centre Ljubljana — Ljubljana, Slovenia
- University Clinical Centre Maribor — Maribor, Slovenia
- Ajou University Hospital-Primary Research Location — Suwon, Gyeonggido, South Korea
- Seoul National University Bundang Hospital — Seongnam-si, Seongnam, South Korea
- Seoul National University Hospital — Seoul, South Korea
- Severance Hospital, Yonsei University Health System — Seoul, South Korea
- Seoul National University Boramae Medical Center — Seoul, South Korea
- Hospital Universitari Germans Trias i Pujol — Badalona, Barcelona, Spain
- Hospital Universitario de Cruces — Barakaldo, Bizkaia, Spain
- Universidad de Navarra - Clinica Universidad de Navarra — Pamplona, Navarre, Spain
- Hospital del Mar — Barcelona, Spain
- Hospital Universitari Vall d'Hebron — Barcelona, Spain
- Universidad de Navarra - Clinica Universidad de Navarra — Madrid, Spain
- Fundacion Jimenez Diaz — Madrid, Spain
- Hospital Universitario Virgen del Rocio - PPDS — Seville, Spain
- Renal Medicine Linkoping University/ Linkoping University Hospital — Linköping, Sweden
- University Hospital Zurich — Zurich, Switzerland
- Kaohsiung Medical University - Chung-Ho Memorial Hospital — Kaohsiung City, Taiwan
- Taipei Medical University Shuang Ho Hospital — New Taipei City, Taiwan
- Taichung Veterans General Hospital — Taichung, Taiwan
- China Medical University Hospital — Taichung, Taiwan
- National Taiwan University Hospital — Zhongzheng, Taiwan
- Turgut Ozal Medical Center — Malatya, Battalgazi, Turkey (Türkiye)
- Gaziantep Universitesi Sahinbey Arastirma ve Uygulama Hastanesi — Şahinbey, Gaziantep, Turkey (Türkiye)
- Istanbul Universitesi Cerrahpasa Tip Fakultesi — Fatih, Istanbul, Turkey (Türkiye)
- Erciyes University — Kayseri, Melikgazi, Turkey (Türkiye)
- Kahramanmaras Sutcu Imam Universitesi Tip Fakultesi Avsar Mah — Kahramanmaraş, Onikisubat, Turkey (Türkiye)
- Necmettin Erbakan University — Konya, Selcuklu, Turkey (Türkiye)
- Kocaeli Universitesi Tip Fakultesi Arastirma ve Uygulama Hastanesi — Kocaeli, Turkey (Türkiye)
- Guy's and St Thomas' NHS Foundation Trust - Guy's Hospital — London, Greater London, United Kingdom
- Birmingham Heartlands Hospital — Birmingham, United Kingdom
- Kent & Canterbury Hospital, Canterbury — Canterbury, United Kingdom
- Hull University Teaching Hospitals NHS Trust — Hull, United Kingdom
- Leicester General Hospital — Leicester, United Kingdom
- St George's University Hospitals NHS Foundation Trust — London, United Kingdom
- King's College Hospital — London, United Kingdom
- Nottingham University Hospitals NHS Trust - City Hospital — Nottingham, United Kingdom
- Lancashire Teaching Hospital NHS Foundation Trust — Preston, United Kingdom
- Northern General Hospital — Sheffield, United Kingdom
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