Trifecta-Heart cfDNA-MMDx研究
Trifecta-Heart cfDNA-MMDX 研究: DD-cfDNA テストと MMDx マイクロアレイ テストおよび中央 HLA 抗体テストの比較
Demonstrate the relationship between DD-cfDNA levels and HLA antibodies in blood transplant recipient and the Molecular Microscope® (MMDx) Diagnostic System results in indication and protocol biopsies from heart transplants.
調査の概要
詳細な説明
The current standard for assessment of rejection in heart transplants is an endomyocardial biopsy (EMB) interpreted by histology according to ISHLT guidelines. This has considerable error rates, many due to the high disagreement among pathologists in assessing lesions and diagnoses. To address the unmet need for precision and accuracy, the Alberta Transplant Applied Genomics Centre (ATAGC, University of Alberta) has developed a new diagnostic system - the Molecular Microscope® Diagnostic System (MMDx), which uses microarrays to define the global gene expression features of rejection and injury. Now a new screening test is being introduced: the monitoring of donor-derived cell-free DNA (DD-cfDNA) released in the blood by the heart during rejection. The Natera Inc DD-cfDNA Prospera® test is based on the massively multiplex polymerase chain reaction that targets 13,392 single nucleotide polymorphisms and targeted sequences are quantified by Next Generation Sequencing. The Prospera® test has been done on kidney transplant recipients and detected "active rejection" and differentiated it from borderline rejection and no rejection. However, Prospera® test was not examined (the DD-cfDNA results) in heart transplant recipients. DD-cf-DNA test for heart transplants must now be calibrated against MMDx that is based on global gene expression, the new standard for biopsy interpretation. The present study will calibrate centrally measured (Natera Inc) DD-cfDNA levels obtained at the time of an indication or protocol biopsy against the MMDx measurements of T cell-mediated rejection (TCMR), antibody-mediated rejection (ABMR) and early and late tissue injury. The present study will compare DD-cfDNA and MMDx in 300 prospectively collected biopsies for clinical indications and protocol, and accompanying 600 blood samples, to calibrate the DD-cfDNA (Natera Inc.) levels against the MMDx biopsy diagnoses of TCMR, ABMR (and its stages), and acute (early) and chronic (late) injury, , as well as central assessment of HLA antibody (One Lambda) in 300 blood samples, interpreted centrally as donor specific antibody (DSA) based on the tissue typing results. Trifecta-Heart collected 718 biopsies, 709 cfDNA samples and 706 One Lambda samples so far. Due to a considerable interest from participation centers, this study aims to collect 300 more biopsies and corresponding blood samples. This study is an extension of the INTERHEART ClinicalTrials.gov Identifier: NCT02670408
研究の種類
入学 (推定)
連絡先と場所
研究連絡先
- 名前:Robert Polakowski, PhD
- 電話番号:1 780 492 5091
- メール:polakows@ualberta.ca
研究連絡先のバックアップ
- 名前:Konrad Famulski, PhD
- 電話番号:1 780 782 9463
- メール:konrad@ualberta.ca
研究場所
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Arkansas
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Little Rock、Arkansas、アメリカ、72205
- 募集
- Baptist Health Institute for Research and Innovation
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主任研究者:
- Patrick Campbell, MD
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コンタクト:
- Victoria McIntosh Marren
- メール:victoria.mcintosh@baptist-health.org
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Florida
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Tampa、Florida、アメリカ、33606
- 募集
- Tampa General Hospital, 409 Bayshore Blvd.
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コンタクト:
- Kristyn Kuzianik
- メール:kkuzianik@tgh.org
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主任研究者:
- Benjamin Mackie, MD
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New Jersey
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West New York、New Jersey、アメリカ、10032
- 募集
- Columbia University Medical Center, Columbia Interventional Cardiovascular Care
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主任研究者:
- Gabriel Sayer, MD
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コンタクト:
- Maria Alejandra Muñoz Cifuentes
- メール:mam2649@cumc.columbia.edu
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New York
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The Bronx、New York、アメリカ、10467
- 募集
- Montefiore Medical Center, 3319 Rochambeau Avenue, 2nd FL
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コンタクト:
- Renae Robinson
- メール:rerobins@montefiore.org
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コンタクト:
- Brandon Johnson
- メール:brajohnson@montefiore.org
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主任研究者:
- Omar Saeed, MD
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Texas
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Dallas、Texas、アメリカ、75246
- 募集
- Annette C. and Harold C. Simmons Transplant Institute, BaylorScott&White Research Institute
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コンタクト:
- Aayla K Jamil, MBBS
- メール:Aayla.Jamil@BSWHealth.org
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主任研究者:
- Shelley Hall, MD
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Utah
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Salt Lake City、Utah、アメリカ、84132
- 募集
- Cardiovascular Medicine, University of Utah Health
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コンタクト:
- Jennifer Hong
- メール:Jennifer.Hong@hsc.utah.edu
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主任研究者:
- Josef Stehlik, MD, PhD
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Bologna、イタリア、40138
- まだ募集していません
- Heart Failure and Heart Transplant Unit, University of Bologna
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主任研究者:
- Luciano Potena, MD
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コンタクト:
- Laura Borgese
- メール:laura.borgese@gmail.com
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Darlinghurst、オーストラリア、NSW 2010
- まだ募集していません
- Cardiac Transplantation Laboratory, The Victor Chang Cardiac Research Institute
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主任研究者:
- Peter MacDonald, MD
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コンタクト:
- Carmen Herrera, MD
- メール:peter.macdonal@svha.org.au
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Alberta
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Edmonton、Alberta、カナダ、T6G 2R7
- 募集
- Division of Cardiology, University of Alberta
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主任研究者:
- Daniel Kim, MD
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コンタクト:
- Daniel Kim, MD
- メール:dk@ualberta.ca
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A Coruña、スペイン
- まだ募集していません
- Advanced Heart Failure Transplant Unit
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主任研究者:
- Maria G Crespo-Leiro, MD
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コンタクト:
- Zulaika Grille Cancela
- メール:Zulaika.grille.cancela@sergas.es
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Prague、チェコ、140 21
- 募集
- Institute for Clinical and Experimental Medicine - IKEM Videnska 1958/9
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コンタクト:
- Tereza Novakowa
- メール:novt@ikem.cz
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主任研究者:
- Vojtech Melenovsky, MD PhD
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Zabrze、ポーランド、41-800
- 募集
- Silesian Center for Heart Diseases (Ś!ąskie Centrum Chorób Serca w Zabrzu
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主任研究者:
- Piotr Przybylowski, Professor
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コンタクト:
- Agnieszka Kuczaj, MD PhD
- メール:agnieszka.kuczaj@gmail.com
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参加基準
適格基準
就学可能な年齢
- 子
- 大人
- 高齢者
健康ボランティアの受け入れ
受講資格のある性別
サンプリング方法
調査対象母集団
The study population includes patients with a functioning heart transplant undergoing a biopsy for clinical indications or surveillance (protocol) biopsy.
説明
Inclusion Criteria:
- All heart transplant recipients undergoing a biopsy for clinical indications and protocol biopsies, as determined by their physician or surgeon, will be eligible to enroll in the study.
- Patients are enrolled based on standard of care biopsies, including surveillance biopsies in high-risk patients, with informed consent.
Exclusion Criteria:
- Patients will be excluded from the study if they decline participation
- Are unable to give informed consent.
- Recipients of multiple organs.
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
- 観測モデル:COHORT
- 時間の展望:PROSPECTIVE
コホートと介入
グループ/コホート |
介入・治療 |
|---|---|
|
Heart transplant protocol and for cause biopsies
The study population includes patients with a functioning heart transplant undergoing a biopsy for clinical indications as standard of care, or protocol biopsies of heart in high-risk patients, or follow-up after treatment. |
Microarray test of gene expression in heart biopsies Donor derived cell-free DNA in patient blood Centralized measurement of HLA antibodies in patient blood |
この研究は何を測定していますか?
主要な結果の測定
結果測定 |
メジャーの説明 |
時間枠 |
|---|---|---|
|
Calibration of Prospera test for T cell-mediated rejection
時間枠:18 months
|
Set DD-cfDNA test cut-off values against the probability of T cell-mediated rejection in the biopsy as reported by MMDx. Calibration of DD-cfDNA test cut-off values against the probability of T cell-mediated rejection in the biopsy as reported by MMDx. |
18 months
|
|
Calibration of Prospera test for antibody-mediated rejection
時間枠:18 months
|
Set DD-cfDNA test cut-off values against the probability of antibody-mediated rejection in the biopsy as reported by MMDx. |
18 months
|
|
Calibration of Prospera test for heart injury
時間枠:18 month
|
Set DD-cfDNA test cut-off values against the probability of acute and chronic heart injury in the biopsy as reported by MMDx. |
18 month
|
|
Report calibrated Prospera test results for rejection
時間枠:6 months
|
Obtain clinicians feedback |
6 months
|
|
Report calibrated Prospera test results for heart injury
時間枠:6 month
|
Obtain clinicians feedback |
6 month
|
二次結果の測定
結果測定 |
メジャーの説明 |
時間枠 |
|---|---|---|
|
Determine if Prospera blood test can replace heart biopsy test
時間枠:6 month
|
Obtain clinicians feedback |
6 month
|
|
Determine if Prospera blood test can replace follow up heart biopsy
時間枠:6 month
|
Determine whether resolution of DD-cfDNA after treatment can monitor response to therapy and avoid follow-up biopsies |
6 month
|
|
Assessment of donor-specific antibody status
時間枠:6 months
|
Report and compare the DSA status based on centralized and local HLA antibody measurement. |
6 months
|
協力者と研究者
スポンサー
捜査官
- 主任研究者:Philip F Halloran, MD PhD、Alberta Transplant Applied Genomics Center, University of Alberta
出版物と役立つリンク
一般刊行物
- Madill-Thomsen KS, Halloran PF. Precision diagnostics in transplanted organs using microarray-assessed gene expression: concepts and technical methods of the Molecular Microscope(R) Diagnostic System (MMDx). Clin Sci (Lond). 2024 Jun 5;138(11):663-685. doi: 10.1042/CS20220530.
- Halloran PF, Reeve J, Mackova M, Madill-Thomsen KS, Demko Z, Olymbios M, Campbell P, Melenovsky V, Gong T, Hall S, Stehlik J. Comparing Plasma Donor-derived Cell-free DNA to Gene Expression in Endomyocardial Biopsies in the Trifecta-Heart Study. Transplantation. 2024 Sep 1;108(9):1931-1942. doi: 10.1097/TP.0000000000004986. Epub 2024 Aug 20.
- Halloran PF, Madill-Thomsen KS. Donor-derived Cell-free DNA: A Step Forward in the Quest for Transplant Truth. Transplantation. 2025 Jun 1;109(6):910-914. doi: 10.1097/TP.0000000000005332. Epub 2025 Jan 28. No abstract available.
- Halloran PF, Madill-Thomsen KS. The Molecular Microscope Diagnostic System: Assessment of Rejection and Injury in Heart Transplant Biopsies. Transplantation. 2023 Jan 1;107(1):27-44. doi: 10.1097/TP.0000000000004323. Epub 2022 Dec 8.
- Madill-Thomsen KS, Hidalgo LG, Mackova M, Campbell P, Demko Z, Felius J, Gong T, Hall S, Kim DH, Kuczaj A, Lowe D, Maliakkal N, Melenovsky V, Olympios M, Patel S, Prewett A, Przybylowski P, Sayer G, Stehlik J, Tseliou E, Uriel N, Halloran PF. Defining the relationships among four tests for assessing antibody-mediated rejection in heart transplants in a prospective, observational study. J Heart Lung Transplant. 2026 Apr;45(4):659-670. doi: 10.1016/j.healun.2025.10.024. Epub 2025 Nov 13.
- Madill-Thomsen KS, Hidalgo LG, Mackova M, Demko Z, Prewett A, Campbell P, Felius J, Gong T, Hall S, Kim DH, Kuczaj A, Lowe D, Maliakkal N, Melenovsky V, Olympios M, Patel S, Przybylowski P, Sayer G, Tseliou E, Uriel N, Stehlik J, Halloran PF; Trifecta-Heart Study Group. Comparing DSA-negative and DSA-positive antibody-mediated rejection in heart transplants: Results from the Trifecta-Heart study. J Heart Lung Transplant. 2026 Jul;45(7):1046-1057. doi: 10.1016/j.healun.2026.03.004. Epub 2026 Mar 13.
- Halloran PF, Madill-Thomsen KS, Biagini DG, Kaur N, Prewett A, Suresh N, Demko ZP, Bhorade S, Olympios M, Gauthier PT, Campbell PT, Gong T, Hall S, Kim DH, Kuczaj A, Przybylowski P, Melenovsky V, Patel SR, Sayer G, Stehlik J, Tseliou E, Uriel N, Mackova M; Trifecta-Heart Investigators. A two-threshold donor-derived cell-free DNA algorithm improves detection of molecular rejection in heart transplantation. J Heart Lung Transplant. 2026 Jun 22:S1053-2498(26)01953-4. doi: 10.1016/j.healun.2026.06.009. Online ahead of print.
研究記録日
主要日程の研究
研究開始 (実際)
一次修了 (推定)
研究の完了 (推定)
試験登録日
最初に提出
QC基準を満たした最初の提出物
最初の投稿 (実際)
学習記録の更新
投稿された最後の更新 (実際)
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
詳しくは
本研究に関する用語
キーワード
その他の研究ID番号
- ATAGC06
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
Only IPD data will be shared within a participating center.
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
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。