A Study of Mezagitamab in Adults With Late Antibody-Mediated Rejection (AMR) After a Kidney Transplant
A Double-Blind, Placebo-Controlled, Multicenter, Randomized, Phase 2 Trial to Evaluate the Safety and Efficacy of Mezagitamab (TAK-079) in Kidney Transplant Recipients With Late Antibody-Mediated Rejection (AMR)
Antibody-mediated rejection (AMR) is a major cause of worsening kidney function after a kidney transplant (kidney allograft dysfunction) and can lead to kidney failure. AMR happens when the kidney recipient's immune system makes antibodies that attack the donor kidney. Antibodies are proteins made by the immune system to recognize foreign cells. Over time, this attack can damage kidney tissue and cause the transplant to fail. Because AMR can be serious, there is a need for treatments that are safe, work well, and are supported by good evidence.
The main aim of this study is to find out how safe mezagitamab is and how well adults with AMR tolerate it compared with placebo. A placebo looks like medicine but has no active ingredients. The study will also look at whether mezagitamab helps to control inflammation in the transplanted kidney and helps keep kidney function stable, compared with placebo.
Participants will be placed by chance in 1 of the 3 treatment groups in equal numbers. Two groups will receive mezagitamab in two different doses. One group will receive placebo. This means that out of every 3 participants, 2 will receive mezagitamab and 1 will receive placebo.
During the study, participants will visit their study clinic several times.
Studieoversikt
Status
Status
Forhold
Forhold
Intervensjon / Behandling
Intervensjon / Behandling
Studietype
Studietype
Registrering (Antatt)
Registrering
Fase
Fase
- Fase 2
Kontakter og plasseringer
Studiekontakt
Studiekontakt
- Navn: Takeda Contact
- Telefonnummer: +1-877-825-3327
- E-post: medinfoUS@takeda.com
Studiesteder
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California
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Los Angeles, California, Forente stater, 90024
- UCLA University of California Los Angeles
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Hovedetterforsker:
- Suphamai Bunnapradist
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Ta kontakt med:
- E-post: bunnapradist@mednet.ucla.edu
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San Francisco, California, Forente stater, 94118
- Kaiser Permanente-San Francisco Medical Center - Kidney Transplant Clinic
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Ta kontakt med:
- E-post: anshul.x.bhalla@kp.org
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Hovedetterforsker:
- Anshul Bhalla
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Florida
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Miami, Florida, Forente stater, 33136
- University of Miami Hospital and Clinics
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Hovedetterforsker:
- Adela Mattiazzi
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Ta kontakt med:
- E-post: amattiazzi@med.miami.edu
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Tampa, Florida, Forente stater, 33606
- Tampa General Hospital
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Hovedetterforsker:
- Luis Beltran
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Ta kontakt med:
- E-post: lbeltran@flkidney.com
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Maryland
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Baltimore, Maryland, Forente stater, 21201
- University of Maryland
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Ta kontakt med:
- E-post: jbromberg@smail.umaryland.edu
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Hovedetterforsker:
- Jonathan Bromberg
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Missouri
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St Louis, Missouri, Forente stater, 63110
- Washington University School of Medicine
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Hovedetterforsker:
- Tarek Alhamad
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Ta kontakt med:
- E-post: talhamad@wustl.edu
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New Jersey
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Livingston, New Jersey, Forente stater, 07039
- Cooperman Barnabas Medical Center
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Hovedetterforsker:
- Anup Patel
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Ta kontakt med:
- E-post: anup.patel@rwjbh.org
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New York
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New York, New York, Forente stater, 10016
- NYU Langone Health - Transplant Associates
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Ta kontakt med:
- E-post: Aprajita.Mattoo@nyulangone.org
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Hovedetterforsker:
- Aprajita Mattoo
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New York, New York, Forente stater, 10021
- Weill Cornell Medicine - Nephrology and Kidney Transplantation Medicine
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Hovedetterforsker:
- Darshana Dadhania
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Ta kontakt med:
- E-post: dmd2001@med.cornell.edu
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Ohio
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Cleveland, Ohio, Forente stater, 44195
- Cleveland Clinic - Cleveland
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Ta kontakt med:
- E-post: augustj4@ccf.org
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Hovedetterforsker:
- Joshua Augustine
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Texas
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Dallas, Texas, Forente stater, 75390
- University of Texas Southwestern Medical Center
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Hovedetterforsker:
- David Wojciechowski
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Ta kontakt med:
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Utah
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Murray, Utah, Forente stater, 84107
- Intermountain Healthcare
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Hovedetterforsker:
- Sanjiv Anand
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Ta kontakt med:
- E-post: sanjivanand@yahoo.com
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Virginia
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Richmond, Virginia, Forente stater, 23298
- Virginia Commonwealth University (VCU) - Medical Center - Hume-Lee Transplant Center (HLTC)
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Hovedetterforsker:
- Gaurab Gupta
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Wisconsin
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Milwaukee, Wisconsin, Forente stater, 53226
- Froedtert and The Medical College of Wisconsin
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Hovedetterforsker:
- Matthew Cooper
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Ta kontakt med:
- E-post: macooper@mcw.edu
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Bordeaux, Frankrike, 33076
- CHU Bordeaux, CHU Pellegrin
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Hovedetterforsker:
- Lionel Couzi
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Ta kontakt med:
- E-post: lionel.couzi@chu-bordeaux.fr
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Créteil, Frankrike, 94000
- Hopital Henri Mondor
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Ta kontakt med:
- E-post: marie.matignon@aphp.fr
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Hovedetterforsker:
- Marie Matignon
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Lyon, Frankrike, 69003
- Hopital Edouard Herriot (HEH)
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Hovedetterforsker:
- Olivier Thaunat
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Ta kontakt med:
- E-post: olivier.thaunat@chu-lyon.fr
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Toulouse, Frankrike
- CHU de Toulouse - Hopital Rangueil
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Hovedetterforsker:
- Nassim Kamar
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Ta kontakt med:
- E-post: kamar.n@chu-toulouse.fr
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Niigata, Japan, 951-8520
- Niigata University Medical and Dental Hospital
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Ta kontakt med:
- E-post: masa1214@med.niigata-u.ac.jp
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Hovedetterforsker:
- Masayuki Tasaki
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Osaka, Japan, 545-8585
- Osaka Metropolitan university Hospital
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Ta kontakt med:
- E-post: uchida@omu.ac.jp
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Hovedetterforsker:
- Junji Uchida
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Aichi-ken
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Nagoya, Aichi-ken, Japan, 466-8650
- Japanese Red Cross Aichi Medical Center Nagoya Daini Hospital
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Hovedetterforsker:
- Kenta Futamura
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Ta kontakt med:
- E-post: kenta88@nagoya2.jrc.or.jp
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Kumamoto
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Kumamoto, Kumamoto, Japan, 861-8520
- Japanese Red Cross Kumamoto Hospital
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Hovedetterforsker:
- Shigeyoshi Yamanaga
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Ta kontakt med:
- Telefonnummer: 096-384-2111
- E-post: yamanaga@kumamoto-med.jrc.or.jp
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Tokyo
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Shinjuku-ku, Tokyo, Japan, 162-0055
- Yochomachi Clinic
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Ta kontakt med:
- Telefonnummer: 81353122059
- E-post: omotokazuya@yahoo.co.jp
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Hovedetterforsker:
- Kazuya Omoto
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Beijing Municipality
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Beijing, Beijing Municipality, Kina, 100050
- Beijing Friendship hospital, Capital Medical University
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Ta kontakt med:
- E-post: yczhu82@gmail.com
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Hovedetterforsker:
- Yichen Zhu
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Guangdong
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Guangdong, Guangdong, Kina, 510080
- The First Affiliated Hospital of Sun Yat-sen University
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Ta kontakt med:
- E-post: wangchx@mail.sysu.edu.cn
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Hovedetterforsker:
- Changxi Wang
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Guangxi
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Nanning, Guangxi, Kina, 530007
- The Second Affiliated Hospital of Guangxi Medical University
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Ta kontakt med:
- E-post: sxywn@sohu.com
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Hovedetterforsker:
- Xuyong Sun
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Hubei
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Wuhan, Hubei, Kina, 430075
- Tongji Hospital Affiliated to Tongji Medicine University
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Hovedetterforsker:
- Gang Chen
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Ta kontakt med:
- E-post: gchen@tjh.tjmu.edu.cn
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Shaanxi
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Xi'an, Shaanxi, Kina
- The First Affiliated Hospital of Xi'an Jiaotong University
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Ta kontakt med:
- E-post: xwujun126@mail.xjtu.edu.cn
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Hovedetterforsker:
- Wujun Xue
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Shandong
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Jinan, Shandong, Kina, 250013
- Shandong Provincial Qianfoshan Hospital
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Hovedetterforsker:
- Jianning Wang
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Ta kontakt med:
- E-post: docjianning_wang@yeah.net
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Sichuan
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Chengdu, Sichuan, Kina, 610000
- West China Hospital Sichuan University
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Ta kontakt med:
- E-post: yyshi_130@126.com
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Hovedetterforsker:
- Yunying Shi
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Zhejiang
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Hangzhou, Zhejiang, Kina, 310003
- The First Affiliated Hospital of Zhejiang University school of medicine
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Ta kontakt med:
- E-post: rd_wangjia@zju.edu.cn
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Hovedetterforsker:
- Rending Wang
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München, Tyskland, 81377
- Ludwig-Maximilians-Universitaet Muenchen (LMU) Klinikum der Universitaet Muenchen
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Hovedetterforsker:
- Michael Fischereder
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Münster, Tyskland
- Universitaetsklinikum Muenster
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Hovedetterforsker:
- Stefan Reuter
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North Rhine-Westphalia
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Bochum, North Rhine-Westphalia, Tyskland, 44892
- Kliniken Universitatsklinikum Bochum GmbH
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Hovedetterforsker:
- Andreas Schnitzbauer
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Essen, North Rhine-Westphalia, Tyskland, 45122
- Universitaetsklinikum Essen
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Hovedetterforsker:
- Benjamin Wilde
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Deltakelseskriterier
Kvalifikasjonskriterier
Kvalifikasjonskriterier
Alder som er kvalifisert for studier
- Voksen
- Eldre voksen
Tar imot friske frivillige
Beskrivelse
Key inclusion criteria:
- The participant aged 18 to 80 years.
- The participant must have a biopsy-confirmed diagnosis of active or chronic active late AMR (defined as greater than [>] 6 month after kidney transplant) without concurrent definitive TCMR (Grade 1a and above) as defined by the 2022 Banff classification.
- Biopsy within 30 days prior to screening, or performed during screening period within protocol-defined window.
- If the participant has received treatment for rejection, then the repeat biopsy and donor specific antibody (DSA) testing must have been performed at least 6 weeks after stopping the treatment.
- The participant with either human leukocyte antigen (HLA) class I and/or II DSA.
- eGFR > 30 milliliters per minute per 1.73 square meters (mL/min/1.73m^2).
Key exclusion criteria:
- The participant has blood type A, B, AB, or O (ABO) incompatible transplant.
- The participant has a history of multiple organ transplants, including en bloc and dual kidney transplants.
- Participant likely to require renal replacement therapy within the subsequent 30 days.
- Participants who have received an anti-cluster of differentiation 38 (CD38) therapy in the last 1 year or have past history of failing to achieve AMR resolution despite treatment with an anti-CD38 therapy.
The participant has received any previous treatment with other immunosuppressant or immunomodulatory therapy:
a) Within 6 months of signing the informed consent form (ICF) as listed below:
- Complement system inhibitors (such as, eculizumab).
- Proteasome inhibitors (such as, bortezomib).
- Interleukin-6 (IL-6)/IL-6R antibody (such as, tocilizumab).
- Anti-cluster of differentiation 20 (CD20) antibody (such as, rituximab). b) Within 6 weeks of signing the ICF as listed below:
- Intravenous immunoglobulin (IVIG) or subcutaneous immunoglobulin (SCIG) or plasmapheresis
- The participant has active infection with hepatitis B virus, hepatitis C virus (HCV), or human immunodeficiency virus (HIV).
- Participant with serious infection within 2 weeks or with opportunistic infection within 2 months prior to signing ICF. Participant with active or untreated tuberculosis, or those with high suspicion of tuberculosis are also excluded.
- History of malignancy (including myelodysplastic syndrome) within 5 years of signing the ICF, except for adequately treated non-melanoma skin cancer, superficial bladder cancer, and curatively treated cervical carcinoma-in-situ.
Key Note: Other protocol specified inclusion and exclusion criteria apply.
Studieplan
Hvordan er studiet utformet?
Designdetaljer
- Primært formål: Behandling
- Tildeling: Randomisert
- Intervensjonsmodell: Parallell tildeling
- Masking: Firemannsrom
Antall våpen
Våpen og intervensjoner
Deltakergruppe / ArmDeltakergruppe / Arm |
Intervensjon / BehandlingIntervensjon / Behandling |
|---|---|
|
Eksperimentell: Arm A: Mezagitamab + Placebo
Participants will receive mezagitamab up to Week 24, followed by placebo up to Week 48, followed by an observation period up to Week 70.
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Mezagitamab subcutaneous (SC) injection.
Andre navn:
Mezagitamab-matching placebo SC injection.
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Eksperimentell: Arm B: Mezagitamab
Participants will receive mezagitamab up to Week 48, followed by an observation period up to Week 70.
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Mezagitamab subcutaneous (SC) injection.
Andre navn:
|
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Aktiv komparator: Arm C: Placebo
Participants will receive placebo up to Week 48, followed by an observation period up to Week 70.
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Mezagitamab-matching placebo SC injection.
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Hva måler studien?
Primære resultatmål
Primære resultatmål
Resultatmål |
Tiltaksbeskrivelse |
Tidsramme |
|---|---|---|
|
Arms A, B, and C: Number of Participants With Treatment-Emergent Adverse Events (TEAEs)
Tidsramme: Up to Week 70
|
An adverse event (AE) is any untoward medical occurrence in a clinical trial participant, temporally associated with the use of the trial intervention, whether or not the occurrence is considered related to the trial intervention.
An AE can be any unfavorable and unintended sign (including an abnormal laboratory finding), symptom, or disease (new or exacerbated) temporally associated with the use of the trial intervention.
TEAEs are defined as AEs with start dates at the time of or following the first exposure to investigational medicinal product (IMP).
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Up to Week 70
|
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Arms A, B, and C: Number of Participants With Related TEAEs
Tidsramme: Up to Week 70
|
A related AE is an AE that is considered related to the IMP.
Related TEAEs are defined as related AEs with start dates at the time of or following the first exposure to IMP.
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Up to Week 70
|
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Arms A, B, and C: Number of Participants With Serious Adverse Events (SAEs)
Tidsramme: Up to Week 70
|
An SAE is any untoward medical occurrence that results in death, is life threatening, requires inpatient hospitalization or prolongation of existing hospitalization, results in persistent or significant disability/incapacity or is a congenital anomaly/birth defect.
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Up to Week 70
|
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Arms A, B, and C: Number of Participants With AEs of Special Interest
Tidsramme: Up to Week 70
|
AEs of special interest are AEs that are considered specific to the IMP.
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Up to Week 70
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Arms A, B, and C: Number of Participants With AE Leading to Treatment Discontinuation
Tidsramme: Up to Week 70
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Up to Week 70
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Arms A, B, and C: Number of Participants With Clinically Significant Abnormal Laboratory Test Results and Vital Signs
Tidsramme: Up to Week 70
|
Up to Week 70
|
Sekundære resultatmål
Sekundære resultatmål
Resultatmål |
Tiltaksbeskrivelse |
Tidsramme |
|---|---|---|
|
Arms A, B, and C: Percentage of Participants With Achievement of Biopsy-Proven Histologic Resolution of AMR Activity at Weeks 24 and 48
Tidsramme: Weeks 24 and 48
|
Achievement of biopsy-proven histological resolution of AMR activity will be assessed by the 2022 Banff classification criteria.
The Banff 2022 Classification provides a standardized framework for evaluating kidney transplant biopsies using lesion scoring.
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Weeks 24 and 48
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Arms A, B, and C: Microvascular Inflammation (MVI) Score in Biopsy Samples at Weeks 24 and 48
Tidsramme: Weeks 24 and 48
|
MVI is an important marker of allograft loss and is defined as the sum of glomerulitis and peritubular capillaritis scores (g+ptc) on kidney histology.
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Weeks 24 and 48
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Arms A, B, and C: Percentage of Participants Who Achieve a MVI Score of 0 at Weeks 24 and 48
Tidsramme: Weeks 24 and 48
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Weeks 24 and 48
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Arms A, B, and C: Change From Baseline in MVI score at Weeks 24 and 48
Tidsramme: Baseline, Weeks 24 and 48
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Baseline, Weeks 24 and 48
|
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Arms A, B, and C: Change From Baseline in Estimated Glomerular Filtration Rate (eGFR) at Weeks 24, 48 and 70
Tidsramme: Baseline, Weeks 24, 48 and 70
|
eGFR is a measure of kidney function calculated from serum creatinine using the Chronic Kidney Disease Epidemiology Collaboration (CKD-EPI) equation.
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Baseline, Weeks 24, 48 and 70
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Arms A, B, and C: Change From Baseline in Donor-Derived Cell-Free DNA (dd-cfDNA) at Weeks 24, 48 and 70
Tidsramme: Baseline, Weeks 24, 48 and 70
|
dd-cfDNA are DNA fragments released from injured donor cells.
It serves as a noninvasive, quantitative method that reflects allograft injury and is associated with AMR activity in kidney transplant recipients.
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Baseline, Weeks 24, 48 and 70
|
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Arms A, B, and C: Change From Baseline in Urine Protein Creatinine Ratio (UPCR) at Weeks 24, 48 and 70
Tidsramme: Baseline, Weeks 24, 48 and 70
|
UPCR is a measure of protein excretion calculated from a urine sample, as the ratio of urine protein to creatinine, and used to assess kidney function.
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Baseline, Weeks 24, 48 and 70
|
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Arm B: Percentage of Participants With Achievement of Biopsy-Proven Histologic Resolution of AMR Activity at Week 70
Tidsramme: Week 70
|
Week 70
|
|
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Arm B: MVI Score in Biopsy Samples at Week 70
Tidsramme: Week 70
|
Week 70
|
|
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Arm B: Percentage of Participants Who Achieve a MVI Score of 0 at Week 70
Tidsramme: Week 70
|
Week 70
|
|
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Arm B: Change From Baseline in MVI score at Week 70
Tidsramme: Week 70
|
Week 70
|
|
|
Arms A, B, and C: Percentage of Participants With T-Cell Mediated Rejection (TCMR) by Biopsy at Weeks 24 and 48
Tidsramme: Weeks 24 and 48
|
Weeks 24 and 48
|
|
|
Arm B: Percentage of Participants With TCMR by Biopsy at Week 70
Tidsramme: Week 70
|
Week 70
|
|
|
Arms A and B: Serum Concentration of Mezagitamab
Tidsramme: Pre-dose and at multiple time points post-dose up to Week 70
|
Pre-dose and at multiple time points post-dose up to Week 70
|
|
|
Arms A, B and C: Number of Participants With Anti-Drug Antibody
Tidsramme: Pre-dose and at multiple time points post-dose up to Week 70
|
Pre-dose and at multiple time points post-dose up to Week 70
|
|
|
Arms A, B and C: Number of Participants With Neutralizing Antibody
Tidsramme: Pre-dose and at multiple time points post-dose up to Week 70
|
Pre-dose and at multiple time points post-dose up to Week 70
|
Samarbeidspartnere og etterforskere
Sponsor
Sponsor
Etterforskere
Etterforskere
- Studieleder: Study Director, Takeda
Publikasjoner og nyttige lenker
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Studierekorddatoer
Studer hoveddatoer
Studiestart (Antatt)
Studiestart
Primær fullføring (Antatt)
Primær fullføring
Studiet fullført (Antatt)
Studiet fullført
Datoer for studieregistrering
Først innsendt
Først innsendt
Først innsendt som oppfylte QC-kriteriene
Først innsendt som oppfylte QC-kriteriene
Først lagt ut (Faktiske)
Først lagt ut
Oppdateringer av studieposter
Sist oppdatering lagt ut (Faktiske)
Sist oppdatering lagt ut
Siste oppdatering sendt inn som oppfylte QC-kriteriene
Siste oppdatering sendt inn som oppfylte QC-kriteriene
Sist bekreftet
Sist bekreftet
Mer informasjon
Begreper knyttet til denne studien
Nøkkelord
Andre studie-ID-numre
Andre studie-ID-numre
- TAK-079-2002
- 2026-526239-20-00 (Ctis)
Plan for individuelle deltakerdata (IPD)
Planlegger du å dele individuelle deltakerdata (IPD)?
IPD-planbeskrivelse
Tilgangskriterier for IPD-deling
IPD-deling Støtteinformasjonstype
- STUDY_PROTOCOL
- SEVJE
- ICF
- CSR
Legemiddel- og utstyrsinformasjon, studiedokumenter
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