Early Detection of Amyloidosis in Monoclonal Gammopathy Using Nuclear Medicine Imaging (MGUS-PET)
Early Detection of Light-Chain Amyloidosis in Monoclonal Gammopathy Using 18F-Florbetaben PET/MR: a Prospective, Single-Center, Observational Study
The goal of this clinical trial is to evaluate whether ¹⁸F-florbetaben PET/MR can detect systemic amyloid deposits early and noninvasively in patients with monoclonal gammopathy. The main question it aims to answer is: Can ¹⁸F-florbetaben PET/MR identify systemic amyloid deposits across clinically and histologically defined patient groups?
Participants will:
- Be screened for eligibility and asked to sign an informed consent form
- Have their vital signs measured
- Receive a single intravenous injection of approximately 300 MBq ¹⁸F-florbetaben (Neuraceq®), followed by whole-body PET/MR imaging from skull base to below the kidneys. If MRI is contraindicated (e.g., pacemaker, severe claustrophobia), PET/CT will be performed instead. The scan takes approximately one hour, during which participants lie still in the scanner
- Be monitored during and after the scan for any side effects or adverse events
- Complete study participation at the end of the imaging session (single visit, no follow-up required)
調査の概要
状態
介入・治療
詳細な説明
Aim of the Project: The overarching goal is to establish a non-invasive, sensitive method for early detection of systemic amyloid deposits, laying the foundation for earlier diagnosis and improved treatment of AL amyloidosis.
- Primary Aim: Validate 18F-florbetaben PET for detection of systemic AL amyloidosis versus negative controls.
- Secondary Aim: Compare the sensitivity of amyloid PET with established methods (echocardiography, MRI, serological biomarkers) for the detection of early organ involvement.
- Tertiary Aim: Quantify and characterize systemic amyloid burden across early and manifest disease stages.
Hypotheses:
- Amyloid PET shows pathological tracer uptake in patients with AL amyloidosis and remains unremarkable in negative controls.
- Amyloid PET detects amyloid deposits at a stage in which conventional methods do not yet show structural or functional changes.
- Systemic amyloid burden follows a graded pattern, with intermediate values in early disease and the highest values in manifest AL amyloidosis.
Study Design and Methods Prospective, observational cohort study at the University Hospital Zurich (USZ). 50 participants will be recruited from the established COSMO-AL cohort at the Department of Hematology, which systematically captures patients with clinically significant monoclonal gammopathy and provides standardized skin biopsy data.
Participants:
- Negative controls: monoclonal gammopathy without histologic amyloid (n = 10).
- Early disease (study cohort): monoclonal gammopathy with local, histologically confirmed amyloid deposits (n = 20).
- Positive controls: biopsy-confirmed systemic AL amyloidosis (n = 20). Patients with confirmed amyloid involvement will be additionally stratified by organ involvement to allow exploratory analysis of organ-specific tracer uptake.
研究の種類
入学 (推定)
段階
- 適用できない
連絡先と場所
研究連絡先
- 名前:Dominik C Benz, PD Dr. med.
- 電話番号:+41432531191
- メール:dominik.benz@usz.ch
研究連絡先のバックアップ
- 名前:Mirjam Marty
- メール:mirjam.marty@usz.ch
研究場所
-
-
Canton of Zurich
-
Zurich、Canton of Zurich、スイス、8091
- University Hospital Zurich
-
コンタクト:
- Dominik C Benz, PD Dr. med.
- 電話番号:+41432531191
- メール:dominik.benz@usz.ch
-
コンタクト:
- Mirjam Marty
- メール:mirjam.marty@usz.ch
-
主任研究者:
- Dominik C Benz, PD Dr. med.
-
-
参加基準
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
Inclusion Criteria:
- Participation in the COSMO-AL study
- Available biopsy test result
- Written informed consent
Exclusion Criteria:
- Pregnant or lactating women
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:診断
- 割り当て:非ランダム化
- 介入モデル:単一グループの割り当て
- マスキング:なし(オープンラベル)
武器と介入
参加者グループ / アーム |
介入・治療 |
|---|---|
|
他の:Monoclonal Gammopathy, Amyloid-Negative
Patients with monoclonal gammopathy, biopsy-negative for amyloid (negative controls)
|
Single intravenous dose of ~300 MBq ¹⁸F-florbetaben followed by PET/MR (or PET/CT, if MRI is contraindicated), from the skull base to below the kidneys
他の名前:
|
|
他の:Monoclonal Gammopathy, Amyloid-Positive
Patients with monoclonal gammopathy, biopsy-positive for amyloid (study cohort)
|
Single intravenous dose of ~300 MBq ¹⁸F-florbetaben followed by PET/MR (or PET/CT, if MRI is contraindicated), from the skull base to below the kidneys
他の名前:
|
|
他の:AL Amyloidosis
Patients with biopsy-proven AL amyloidosis (positive controls, with and without cardiomyopathy)
|
Single intravenous dose of ~300 MBq ¹⁸F-florbetaben followed by PET/MR (or PET/CT, if MRI is contraindicated), from the skull base to below the kidneys
他の名前:
|
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 |
|---|---|---|
|
Systemic ¹⁸F-florbetaben PET positivity rate
時間枠:At time of PET/MR imaging (Day 1)
|
Rate of positive ¹⁸F-florbetaben PET scans assessed by visual qualitative analysis across the three patient groups (monoclonal gammopathy without biopsy-proven amyloid, biopsy-positive monoclonal gammopathy, biopsy-proven systemic AL).
PET positivity is defined as any tracer uptake in the myocardium or in any organ outside the liver.
Imaging performed with PET/MR or PET/CT, if MRI is contraindicated.
|
At time of PET/MR imaging (Day 1)
|
二次結果の測定
結果測定 |
メジャーの説明 |
時間枠 |
|---|---|---|
|
Correlation of myocardial ¹⁸F-Florbetaben uptake with cardiac biomarker and MRI parameters
時間枠:At time of PET/MR imaging (Day 1)
|
Correlation of myocardial percent injected dose (%ID) with NT-proBNP (pg/mL) and cardiac MR parameters (indexed LV mass (g/m²), left ventricular ejection fraction (LVEF, %), and extracellular volume fraction (ECV, %)
|
At time of PET/MR imaging (Day 1)
|
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Association of Myocardial ¹⁸F-Florbetaben Uptake with Histological Amyloid Status
時間枠:At time of PET/MR imaging (Day 1)
|
Association of myocardial %ID with histological amyloid status (positive vs. negative) as determined by biopsy data from the parallel COSMO-AL study cohort.
|
At time of PET/MR imaging (Day 1)
|
協力者と研究者
スポンサー
捜査官
- 主任研究者:Dominik C Benz, PD Dr. med.、University of Zurich
研究記録日
主要日程の研究
研究開始 (推定)
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
追加の関連 MeSH 用語
その他の研究ID番号
- 2026-00173
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
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
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