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Ablation With Transcatheter Edge-to-edge Repair for Atrial Functional Mitral Regurgitation and Atrial Fibrillation (ATTRACTION)

2026年8月2日 更新者:Mao Chen

Ablation wiTh TRAnsCatheter Edge-to-edge Repair Versus ablaTION Alone for Atrial Functional Mitral Regurgitation and Atrial Fibrillation (ATTRACTION Study)

This trial is a randomized study for patients with significant atrial functional mitral regurgitation (AFMR) and atrial fibrillation (AF). The composite endpoint of all-cause mortality, cardiovascular-related hospitalizations, AF recurrence, and quality of life improvement is hypothesized to be superior with the combination of transcatheter edge-to-edge repair (TEER) and catheter ablation, compared with catheter ablation alone.

調査の概要

状態

まだ募集していません

条件

介入・治療

詳細な説明

Rationale:

The introduction of transcatheter edge-to-edge repair (TEER) for the treatment of functional mitral regurgitation (FMR) has led to a significant reduction in mortality and heart failure hospitalizations. However, the optimal timing and intervention for patients with atrial functional mitral regurgitation (AFMR) have not been evaluated in clinical trials. Published clinical trials, including COAPT, MITRA-FR, and RESHAPE-HF, did not classify functional mitral regurgitation according to ventricular or atrial origin. Concerns regarding the role of atrial fibrillation (AF) as a potential trigger of atrial dilatation and a consequence of atrial remodeling have led to recommendations for rhythm control in selected patients. Given the high incidence of AFMR among patients with persistent AF, successful ablation and maintenance of sinus rhythm may remain challenging. Therefore, concomitant TEER and catheter ablation are hypothesized to provide greater clinical benefit compared with catheter ablation alone.

Aim:

The purpose of this study is to evaluate the efficacy of TEER combined with catheter ablation in patients with significant AFMR and AF, focusing on clinical outcomes and atrial reverse remodeling.

Study design:

Patients with moderate-to-severe or severe AFMR and AF will be enrolled in a randomized, open-label, controlled study. Patients will be randomized in a 1:1 ratio to receive TEER combined with catheter ablation or catheter ablation alone. The study duration is anticipated to include 24 months of enrollment and 12 months of follow-up.

研究の種類

介入

入学 (推定)

384

段階

  • 適用できない

連絡先と場所

このセクションには、調査を実施する担当者の連絡先の詳細と、この調査が実施されている場所に関する情報が記載されています。

研究連絡先

研究連絡先のバックアップ

参加基準

研究者は、適格基準と呼ばれる特定の説明に適合する人を探します。これらの基準のいくつかの例は、人の一般的な健康状態または以前の治療です。

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

いいえ

説明

Inclusion Criteria:

  • Age ≥ 18 years
  • Left ventricular ejection fraction ≥ 50%
  • Grading of MR: 3+ or 4+ (effective regurgitant orifice area≥30mm2, regurgitant volume ≥45ml)
  • Valve morphology: MR originating from the mid portion of the valve; mitral valve area> 4 cm2; Length of posterior leaflet ≥10 mm; Sufficient leaflet tissue for mechanical coaptation: coaptation depth< 11 mm, coaptation length> 2 mm
  • Rate control in suspected AF-induced cardiomyopathy (heart rate <80 bpm at rest and <110 bpm during exercise)
  • Patients must be willing to comply with all follow-up requirements

Exclusion Criteria:

  • Life expectancy< 1 year due to non-cardiac conditions
  • Primary mitral regurgitation: valve abnormalities including leaflet tethering from LV dysfunction, intrinsic leaflet pathology (prolapse, flail, calcification, severe thickening), mitral annular calcification (either severe or <severe but extending into the leaflets), and/or any mixed pathology
  • Active endocarditis of the mitral valve or rheumatic mitral valve disease
  • Hypotension (systolic pressure < 90 mmHg) or requirement for inotropic support or mechanical hemodynamic support
  • Severe tricuspid regurgitation; Physical evidence of right-sided congestive heart failure with echocardiographic evidence of severe right ventricular dysfunction; Fixed pulmonary artery systolic pressure> 70 mmHg
  • Stroke/TIA, TAVR, CRT/ CRT-D/ ICD, cardiac intervention or surgery within 30 days before randomization
  • Any prior MV surgery or transcatheter procedure
  • Need for any cardiac surgery (other than for MV disease)
  • Untreated clinically significant coronary artery disease
  • Echocardiographic evidence of intracardiac thrombus
  • Active infections requiring current antibiotic therapy
  • Patients who cannot tolerate anti-platelet/anticoagulation agents/contrast media
  • Pregnancy
  • Any condition making it unlikely the patient will be able to complete all protocol procedures (including compliance with medical therapy) and follow-up visits
  • Patient (or legal guardian) unable or unwilling to provide written informed consent before study enrollment

研究計画

このセクションでは、研究がどのように設計され、研究が何を測定しているかなど、研究計画の詳細を提供します。

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: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
実験的:TEER+Ablation
Patients will undergo catheter ablation and transcatheter edge to edge repair.
Participants will undergo catheter ablation for persistent atrial fibrillation followed by transcatheter edge-to-edge repair (TEER) for the treatment of functional mitral regurgitation during the same hospitalization. TEER will be performed using an approved transcatheter mitral valve repair system to reduce mitral regurgitation severity and improve cardiac function.
他の名前:
  • ティア
Participants will undergo catheter ablation for persistent atrial fibrillation during the study period. The procedure will include pulmonary vein isolation with additional ablation strategies as clinically indicated.
アクティブコンパレータ:Catheter ablation
Patients will undergo catheter ablation only.
Participants will undergo catheter ablation for persistent atrial fibrillation during the study period. The procedure will include pulmonary vein isolation with additional ablation strategies as clinically indicated.

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
Hierarchical Composite Clinical Endpoint (Win Ratio)
時間枠:12 months
The primary endpoint is a single hierarchical composite clinical endpoint analyzed by pairwise comparison. Each participant in the transcatheter edge-to-edge repair (TEER) plus catheter ablation group is compared with each participant in the catheter ablation alone group, in order of clinical priority: all-cause mortality, cumulative cardiovascular-related hospitalization, atrial fibrillation recurrence, and change in quality of life measured by the Kansas City Cardiomyopathy Questionnaire (KCCQ). Each pairwise comparison is resolved at the highest-priority component that differs between the two participants, and results in a single "win," "loss," or "tie." The treatment effect is summarized as one win ratio, defined as the total number of wins divided by the total number of losses across all pairs, comparing the TEER plus catheter ablation group with the catheter ablation alone group.
12 months

二次結果の測定

結果測定
メジャーの説明
時間枠
Incidence of 30-day composite safety events
時間枠:30 days
The composite safety endpoint includes cardiovascular mortality, stroke, myocardial infarction, acute kidney injury, major bleeding, and non-elective cardiovascular surgery for device-related complications within 30 days after the procedure.
30 days
Change in mitral regurgitation grade from baseline
時間枠:12 months
Mitral regurgitation severity will be assessed by transthoracic echocardiography according to an integrated approach recommended by current guidelines. The outcome will be the proportion of patients achieving mild or less mitral regurgitation (grade ≤2) at 12 months.
12 months
Composite of all-cause mortality and cardiovascular-related hospitalization
時間枠:12 months
The composite endpoint includes all-cause mortality and cardiovascular-related hospitalization within 12 months. Death events will be identified through follow-up records, and cardiovascular-related hospitalizations will be confirmed by medical record review according to predefined criteria.
12 months
Cardiovascular mortality
時間枠:12 months
Cardiovascular mortality is defined as death caused by cardiovascular causes and will be determined through review of medical records and clinical documentation.
12 months
Heart failure hospitalizations
時間枠:12 months
Heart failure hospitalization is defined as an unplanned admission lasting ≥24 hours due to acute decompensated heart failure, with symptoms, signs, and/or laboratory evidence of heart failure and requiring intravenous or mechanical heart failure therapies. Events will be identified through medical records and adjudicated according to predefined criteria.
12 months
Incidence of stroke or transient ischemic attack
時間枠:12 months
Stroke and transient ischemic attack events will be identified through clinical assessment, medical records, and neuroimaging findings. Stroke will be classified as ischemic or hemorrhagic according to clinical diagnosis and imaging evaluation.
12 months
Change in left atrial volume index
時間枠:12 months
Left atrial volume index is assessed by the biplane method of disks and indexed to body surface area.
12 months
Change in left atrial reservoir function from baseline
時間枠:12 months
Left atrial reservoir function will be assessed using speckle-tracking echocardiography, and the change from baseline to 12 months will be evaluated.
12 months
Change in severity of tricuspid regurgitation from baseline
時間枠:12 months
Tricuspid regurgitation severity will be assessed by transthoracic echocardiography using an integrated approach according to current guidelines. The change in tricuspid regurgitation severity from baseline to 12 months will be evaluated.
12 months
Change in NYHA functional classification from baseline
時間枠:12 months
The New York Heart Association (NYHA) functional class will be assessed by clinical evaluation based on patients' symptoms and limitations during physical activity. The change from baseline to 12 months will be evaluated.
12 months
Change in N-terminal pro-B-type natriuretic peptide (NT-proBNP) level from baseline
時間枠:12 months
Plasma N-terminal pro-B-type natriuretic peptide (NT-proBNP) levels will be measured using standard laboratory assays. The change from baseline to 12 months will be evaluated.
12 months

協力者と研究者

ここでは、この調査に関係する人々や組織を見つけることができます。

スポンサー

協力者

捜査官

  • 主任研究者:Mao Chen、West China Hospital

出版物と役立つリンク

研究に関する情報を入力する責任者は、自発的にこれらの出版物を提供します。これらは、研究に関連するあらゆるものに関するものである可能性があります。

一般刊行物

研究記録日

これらの日付は、ClinicalTrials.gov への研究記録と要約結果の提出の進捗状況を追跡します。研究記録と報告された結果は、国立医学図書館 (NLM) によって審査され、公開 Web サイトに掲載される前に、特定の品質管理基準を満たしていることが確認されます。

主要日程の研究

研究開始 (推定)

2026年9月1日

一次修了 (推定)

2028年9月1日

研究の完了 (推定)

2029年9月1日

試験登録日

最初に提出

2026年7月18日

QC基準を満たした最初の提出物

2026年8月2日

最初の投稿 (実際)

2026年8月4日

学習記録の更新

投稿された最後の更新 (実際)

2026年8月4日

QC基準を満たした最後の更新が送信されました

2026年8月2日

最終確認日

2026年8月1日

詳しくは

本研究に関する用語

その他の研究ID番号

  • 2026-286

個々の参加者データ (IPD) の計画

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いいえ

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