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.
調査の概要
状態
状態
条件
条件
介入・治療
介入・治療
研究の種類
研究の種類
入学 (推定)
入学
段階
段階
- フェーズ2
連絡先と場所
研究連絡先
研究連絡先
- 名前:Takeda Contact
- 電話番号:+1-877-825-3327
- メール:medinfoUS@takeda.com
研究場所
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California
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Los Angeles、California、アメリカ、90024
- UCLA University of California Los Angeles
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主任研究者:
- Suphamai Bunnapradist
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コンタクト:
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San Francisco、California、アメリカ、94118
- Kaiser Permanente-San Francisco Medical Center - Kidney Transplant Clinic
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コンタクト:
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主任研究者:
- Anshul Bhalla
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Florida
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Miami、Florida、アメリカ、33136
- University of Miami Hospital and Clinics
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主任研究者:
- Adela Mattiazzi
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コンタクト:
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Tampa、Florida、アメリカ、33606
- Tampa General Hospital
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主任研究者:
- Luis Beltran
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コンタクト:
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Maryland
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Baltimore、Maryland、アメリカ、21201
- University of Maryland
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コンタクト:
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主任研究者:
- Jonathan Bromberg
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Missouri
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St Louis、Missouri、アメリカ、63110
- Washington University School of Medicine
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主任研究者:
- Tarek Alhamad
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コンタクト:
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New Jersey
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Livingston、New Jersey、アメリカ、07039
- Cooperman Barnabas Medical Center
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主任研究者:
- Anup Patel
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コンタクト:
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New York
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New York、New York、アメリカ、10016
- NYU Langone Health - Transplant Associates
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コンタクト:
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主任研究者:
- Aprajita Mattoo
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New York、New York、アメリカ、10021
- Weill Cornell Medicine - Nephrology and Kidney Transplantation Medicine
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主任研究者:
- Darshana Dadhania
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コンタクト:
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Ohio
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Cleveland、Ohio、アメリカ、44195
- Cleveland Clinic - Cleveland
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コンタクト:
- メール:augustj4@ccf.org
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主任研究者:
- Joshua Augustine
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Texas
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Dallas、Texas、アメリカ、75390
- University of Texas Southwestern Medical Center
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主任研究者:
- David Wojciechowski
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コンタクト:
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Utah
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Murray、Utah、アメリカ、84107
- Intermountain Healthcare
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主任研究者:
- Sanjiv Anand
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コンタクト:
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Virginia
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Richmond、Virginia、アメリカ、23298
- Virginia Commonwealth University (VCU) - Medical Center - Hume-Lee Transplant Center (HLTC)
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主任研究者:
- Gaurab Gupta
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Wisconsin
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Milwaukee、Wisconsin、アメリカ、53226
- Froedtert and The Medical College of Wisconsin
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主任研究者:
- Matthew Cooper
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コンタクト:
- メール:macooper@mcw.edu
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München、ドイツ、81377
- Ludwig-Maximilians-Universitaet Muenchen (LMU) Klinikum der Universitaet Muenchen
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主任研究者:
- Michael Fischereder
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Münster、ドイツ
- Universitaetsklinikum Muenster
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主任研究者:
- Stefan Reuter
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North Rhine-Westphalia
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Bochum、North Rhine-Westphalia、ドイツ、44892
- Kliniken Universitatsklinikum Bochum GmbH
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主任研究者:
- Andreas Schnitzbauer
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Essen、North Rhine-Westphalia、ドイツ、45122
- Universitaetsklinikum Essen
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主任研究者:
- Benjamin Wilde
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Bordeaux、フランス、33076
- CHU Bordeaux, CHU Pellegrin
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主任研究者:
- Lionel Couzi
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コンタクト:
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Créteil、フランス、94000
- Hopital Henri Mondor
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コンタクト:
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主任研究者:
- Marie Matignon
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Lyon、フランス、69003
- Hopital Edouard Herriot (HEH)
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主任研究者:
- Olivier Thaunat
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コンタクト:
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Toulouse、フランス
- CHU de Toulouse - Hopital Rangueil
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主任研究者:
- Nassim Kamar
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コンタクト:
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Beijing Municipality
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Beijing、Beijing Municipality、中国、100050
- Beijing Friendship Hospital, Capital Medical University
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コンタクト:
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主任研究者:
- Yichen Zhu
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Guangdong
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Guangdong、Guangdong、中国、510080
- The First Affiliated Hospital of Sun Yat-Sen University
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コンタクト:
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主任研究者:
- Changxi Wang
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Guangxi
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Nanning、Guangxi、中国、530007
- The Second Affiliated Hospital of Guangxi Medical University
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コンタクト:
- メール:sxywn@sohu.com
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主任研究者:
- Xuyong Sun
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Hubei
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Wuhan、Hubei、中国、430075
- Tongji Hospital Affiliated to Tongji Medicine University
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主任研究者:
- Gang Chen
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コンタクト:
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Shaanxi
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Xi'an、Shaanxi、中国
- The First Affiliated Hospital Of Xi'an Jiaotong University
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コンタクト:
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主任研究者:
- Wujun Xue
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Shandong
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Jinan、Shandong、中国、250013
- Shandong Provincial Qianfoshan Hospital
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主任研究者:
- Jianning Wang
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コンタクト:
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Sichuan
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Chengdu、Sichuan、中国、610000
- West China Hospital Sichuan University
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コンタクト:
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主任研究者:
- Yunying Shi
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Zhejiang
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Hangzhou、Zhejiang、中国、310003
- The First Affiliated Hospital of Zhejiang University school of medicine
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コンタクト:
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主任研究者:
- Rending Wang
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Niigata、日本、951-8520
- Niigata University Medical and Dental Hospital
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コンタクト:
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主任研究者:
- Masayuki Tasaki
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Osaka、日本、545-8585
- Osaka Metropolitan University Hospital
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コンタクト:
- メール:uchida@omu.ac.jp
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主任研究者:
- Junji Uchida
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Aichi-ken
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Nagoya、Aichi-ken、日本、466-8650
- Japanese Red Cross Aichi Medical Center Nagoya Daini Hospital
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主任研究者:
- Kenta Futamura
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コンタクト:
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Kumamoto
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Kumamoto、Kumamoto、日本、861-8520
- Japanese Red Cross Kumamoto Hospital
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主任研究者:
- Shigeyoshi Yamanaga
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コンタクト:
- 電話番号:096-384-2111
- メール:yamanaga@kumamoto-med.jrc.or.jp
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Tokyo
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Shinjuku-ku、Tokyo、日本、162-0055
- Yochomachi Clinic
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コンタクト:
- 電話番号:81353122059
- メール:omotokazuya@yahoo.co.jp
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主任研究者:
- Kazuya Omoto
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参加基準
適格基準
適格基準
就学可能な年齢
- 大人
- 高齢者
健康ボランティアの受け入れ
説明
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.
研究計画
研究はどのように設計されていますか?
デザインの詳細
- 主な目的:処理
- 割り当て:ランダム化
- 介入モデル:並列代入
- マスキング:4倍
アーム数
武器と介入
参加者グループ / アーム参加者グループ / アーム |
介入・治療介入・治療 |
|---|---|
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実験的: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.
他の名前:
Mezagitamab-matching placebo SC injection.
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実験的:Arm B: Mezagitamab
Participants will receive mezagitamab up to Week 48, followed by an observation period up to Week 70.
|
Mezagitamab subcutaneous (SC) injection.
他の名前:
|
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アクティブコンパレータ: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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この研究は何を測定していますか?
主要な結果の測定
主要な結果の測定
結果測定 |
メジャーの説明 |
時間枠 |
|---|---|---|
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Arms A, B, and C: Number of Participants With Treatment-Emergent Adverse Events (TEAEs)
時間枠:Up to Week 70
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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
時間枠:Up to Week 70
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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)
時間枠:Up to Week 70
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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
時間枠:Up to Week 70
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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
時間枠: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
時間枠:Up to Week 70
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Up to Week 70
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二次結果の測定
二次結果の測定
結果測定 |
メジャーの説明 |
時間枠 |
|---|---|---|
|
Arms A, B, and C: Percentage of Participants With Achievement of Biopsy-Proven Histologic Resolution of AMR Activity at Weeks 24 and 48
時間枠:Weeks 24 and 48
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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
時間枠:Weeks 24 and 48
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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
時間枠: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
時間枠: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
時間枠: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
時間枠:Baseline, Weeks 24, 48 and 70
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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
時間枠:Baseline, Weeks 24, 48 and 70
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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
時間枠:Week 70
|
Week 70
|
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Arm B: MVI Score in Biopsy Samples at Week 70
時間枠:Week 70
|
Week 70
|
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Arm B: Percentage of Participants Who Achieve a MVI Score of 0 at Week 70
時間枠:Week 70
|
Week 70
|
|
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Arm B: Change From Baseline in MVI score at Week 70
時間枠:Week 70
|
Week 70
|
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Arms A, B, and C: Percentage of Participants With T-Cell Mediated Rejection (TCMR) by Biopsy at Weeks 24 and 48
時間枠:Weeks 24 and 48
|
Weeks 24 and 48
|
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Arm B: Percentage of Participants With TCMR by Biopsy at Week 70
時間枠:Week 70
|
Week 70
|
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Arms A and B: Serum Concentration of Mezagitamab
時間枠:Pre-dose and at multiple time points post-dose up to Week 70
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Pre-dose and at multiple time points post-dose up to Week 70
|
|
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Arms A, B and C: Number of Participants With Anti-Drug Antibody
時間枠: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
|
|
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Arms A, B and C: Number of Participants With Neutralizing Antibody
時間枠: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
|
協力者と研究者
捜査官
捜査官
- スタディディレクター:Study Director、Takeda
出版物と役立つリンク
便利なリンク
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研究記録日
主要日程の研究
研究開始 (推定)
研究開始
一次修了 (推定)
一次修了
研究の完了 (推定)
研究の完了
試験登録日
最初に提出
最初に提出
QC基準を満たした最初の提出物
QC基準を満たした最初の提出物
最初の投稿 (実際)
最初の投稿
学習記録の更新
投稿された最後の更新 (実際)
投稿された最後の更新
QC基準を満たした最後の更新が送信されました
QC基準を満たした最後の更新が送信されました
最終確認日
最終確認日
詳しくは
本研究に関する用語
その他の研究ID番号
その他の研究ID番号
- TAK-079-2002
- 2026-526239-20-00 (Ctis)
個々の参加者データ (IPD) の計画
個々の参加者データ (IPD) を共有する予定はありますか?
IPD プランの説明
IPD 共有アクセス基準
IPD 共有サポート情報タイプ
- STUDY_PROTOCOL
- SAP
- ICF
- CSR
医薬品およびデバイス情報、研究文書
米国FDA規制医薬品の研究
米国FDA規制機器製品の研究
米国で製造され、米国から輸出された製品。
この情報は、Web サイト clinicaltrials.gov から変更なしで直接取得したものです。研究の詳細を変更、削除、または更新するリクエストがある場合は、register@clinicaltrials.gov。 までご連絡ください。 clinicaltrials.gov に変更が加えられるとすぐに、ウェブサイトでも自動的に更新されます。