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EndoFLIP-Guided Initial Management of Esophagogastric Junction Outflow Obstruction (O-FLIP)

2026年11月4日 更新者:Elizabeth Barba、Hospital Clinic of Barcelona

Prospective Evaluation of an Impedance Planimetry-Guided Therapeutic Stratification Algorithm in Patients With Esophagogastric Junction Outflow Obstruction After Endoscopic Assessment: O-FLIP Multicenter Study

Esophagogastric junction outflow obstruction (EGJOO) can make it difficult for food to pass from the esophagus into the stomach. Some people improve without a procedure to treat the obstruction, while others have persistent swallowing difficulties and may need further treatment.

The O-FLIP study tests whether measurements taken during an endoscopy with a tool called EndoFLIP can help doctors choose an initial treatment for adults with EGJOO. The main outcome is improvement in swallowing symptoms three months after initial management. The study will also track how long improvement lasts and how many participants need further treatment over one year.

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

O-FLIP is a prospective, multicenter, nonrandomized, single-arm interventional study evaluating an EndoFLIP-guided initial management strategy for esophagogastric junction outflow obstruction (EGJOO). Specialist esophageal motility units in Spain will enroll consecutive adults with clinically relevant dysphagia who meet the study eligibility criteria. Baseline data will include clinical characteristics, symptom scores, and findings from high-resolution manometry, timed barium esophagram, upper gastrointestinal endoscopy, and EndoFLIP panometry.

Participating centers will receive common training and use a standardized protocol for EndoFLIP acquisition and interpretation based on the Dallas Consensus. The treating endoscopist will interpret EndoFLIP findings in real time to guide initial management. The coordinating center will subsequently review coded recordings to assess measurement quality and agreement with the local classification.

Symptoms and scores on the Brief Esophageal Dysphagia Questionnaire (BEDQ) and Eckardt score will be recorded at 1, 3, 6, and 12 months, along with treatment changes, dysphagia recurrence, adverse events, and treatment escalation. Follow-up will start on the date of botulinum toxin administration for participants who receive it and on the date of the index endoscopy for those initially managed conservatively.

The primary analysis will estimate the proportion of participants with clinical response at 3 months in the overall cohort, with a 95% confidence interval. Outcomes will also be summarized by baseline EndoFLIP category. Secondary analyses will assess the durability of response and time to definitive treatment directed at the esophagogastric junction. Among participants who receive botulinum toxin, exploratory analyses will examine baseline clinical and physiological factors associated with an incomplete or transient response and with subsequent definitive treatment. Additional exploratory analyses will examine how baseline timed barium esophagram findings relate to EndoFLIP findings and clinical outcomes.

研究の種類

介入

入学 (推定)

115

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

  • 名前:Jorge Luis Núñez-Pizarro, MD
  • 電話番号:3459 +34 932 27 54 00
  • メール:jlnunez@clinic.cat

研究場所

    • Barcelona
      • Barcelona、Barcelona、スペイン、08036
        • Hospital Clínic de Barcelona
        • コンタクト:
          • Jorge Luis Nuñez-Pizarro, MD
          • 電話番号:3459 +34 932 27 54 00
          • メール:jlnunez@clinic.cat
        • 主任研究者:
          • Jorge Luis Nuñez-Pizarro, MD
        • 副調査官:
          • Isis Karina Araujo, MD, PhD
        • 副調査官:
          • Elizabeth Barba Orozco, MD, PhD
        • 副調査官:
          • Gloria Fernández-Esparrach, MD, PhD
        • 副調査官:
          • Alberto Ezquerra, MD
    • Madrid
      • Madrid、Madrid、スペイン、28041
        • Hospital Universitario 12 de Octubre
        • コンタクト:
        • 主任研究者:
          • Isabel Castel de Lucas, MD
      • Madrid、Madrid、スペイン、28040
        • Hospital Clínico San Carlos
        • コンタクト:
        • 主任研究者:
          • Constanza Ciriza de los Ríos, MD, PhD
        • 主任研究者:
          • Ana Zatarain Valles, MD
      • Madrid、Madrid、スペイン
        • Hospital de La Princesa
        • コンタクト:
        • 主任研究者:
          • Cecilio Santander Vaquero, MD, PhD
    • Majadahonda
      • Madrid、Majadahonda、スペイン、28222
        • Hospital Universitario Puerta de Hierro Majadahonda
        • コンタクト:
        • 主任研究者:
          • Rosalia González-Miyar, MD
    • Pamplona
      • Pamplona、Pamplona、スペイン、31008
        • Hospital Universitario de Navarra
        • コンタクト:
        • 主任研究者:
          • Fermin Estremera-Arévalo, MD, PhD

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

18年歳以上 (大人、高齢者)

健康ボランティアの受け入れ

いいえ

受講資格のある性別

全て

説明

Inclusion Criteria:

  • Age 18 years or older.
  • Written study-specific informed consent.
  • Clinically relevant dysphagia, defined as a Brief Esophageal Dysphagia Questionnaire (BEDQ) score of at least 8.
  • High-resolution manometry findings consistent with esophagogastric junction outflow obstruction (EGJOO) according to Chicago Classification version 4.0: elevated median integrated relaxation pressure in both the supine and upright positions, evidence of peristalsis, and intrabolus pressure greater than 20 mmHg in at least 20% of supine swallows, without meeting criteria for achalasia. Premature or hypercontractile contractions are permitted when peristalsis is present and criteria for type III achalasia are not met.

Exclusion Criteria:

  • Prior surgery or treatment directed at the esophagogastric junction, including botulinum toxin injection, pneumatic dilation, peroral endoscopic myotomy (POEM), Heller myotomy, or fundoplication.
  • Current opioid use unless opioids can be discontinued for at least 1 week before enrollment.
  • Hiatal hernia larger than 3 cm, peptic stricture, esophageal rings, esophagogastric malignancy, or any other mechanical cause of dysphagia. This includes a mechanical cause detected during the index endoscopy before EndoFLIP.
  • Eosinophilic esophagitis.
  • Systemic or infectious disease that significantly affects esophageal motility, such as systemic sclerosis or Chagas disease.
  • Inability to complete the planned clinical follow-up.

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:なし
  • 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
実験的:EndoFLIP-Guided Clinical-Care Strategy

All participants will follow a standardized management algorithm based on esophagogastric junction (EGJ) opening on EndoFLIP panometry. Reduced opening will lead to botulinum toxin type A injection during the same endoscopy. Inconclusive or normal opening will lead to initial conservative management, which may include observation, proton pump inhibitors, neuromodulators, or calcium channel blockers at the treating physician's discretion.

EndoFLIP panometry will be performed during the index upper gastrointestinal endoscopy after mechanical causes of dysphagia have been excluded. The treating endoscopist will classify EGJ opening in real time according to standardized Dallas Consensus criteria. Coded recordings will subsequently undergo central review to assess measurement quality and agreement with the local classification.

他の名前:
  • Functional Lumen Imaging Probe
  • Impedance Planimetry
  • FLIP Panometry

Botulinum toxin type A will be injected endoscopically into the lower esophageal sphincter in participants with reduced EGJ opening. The treating physician will be responsible for prescribing and administering the injection as part of the EndoFLIP-guided management strategy.

他の名前:
  • ボトックス

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
Proportion of Participants With Clinical Response at 3 Months
時間枠:3 months after botulinum toxin administration or, for participants initially managed conservatively, 3 months after the index endoscopy.

Proportion of participants in the overall cohort with at least a 50% reduction from baseline in the Brief Esophageal Dysphagia Questionnaire (BEDQ) total score. BEDQ scores range from 0 to 40, with higher scores indicating more severe dysphagia.

3 months after botulinum toxin administration or, for participants initially managed conservatively, 3 months after the index endoscopy.

二次結果の測定

結果測定
メジャーの説明
時間枠
Clinical Response During Follow-up
時間枠:Months 1, 6, and 12.

Proportion of participants with at least a 50% reduction from baseline in BEDQ total score.

Months 1, 6, and 12.
Change From Baseline in BEDQ Score
時間枠:Baseline and months 1, 3, 6, and 12.

Change in BEDQ total score from baseline. Scores range from 0 to 40, with higher scores indicating more severe dysphagia.

Baseline and months 1, 3, 6, and 12.
Change From Baseline in Eckardt Score
時間枠:Baseline and months 1, 3, 6, and 12.

Change in Eckardt symptom score from baseline. Scores range from 0 to 12, with higher scores indicating greater symptom burden.

Baseline and months 1, 3, 6, and 12.
Sustained Clinical Response
時間枠:Months 3 through 12.

Proportion of participants with a clinical response at month 3 who maintain at least a 50% reduction from baseline in BEDQ score through month 12 without recurrence.

Months 3 through 12.
Dysphagia Recurrence After Clinical Response
時間枠:From the first documented response through month 12.

Proportion of participants with a previously documented clinical response who subsequently have a BEDQ reduction of less than 50% from baseline.

From the first documented response through month 12.
Proportion of Participants Receiving Definitive EGJ-Directed Treatment
時間枠:Through month 12.

Proportion of participants who undergo pneumatic dilation, peroral endoscopic myotomy, or Heller myotomy after initial management, and time from the start of follow-up to the first such treatment.

Through month 12.
Adverse Events Related to Procedures or Treatment
時間枠:From the index endoscopy through month 12.

Proportion of participants with at least one adverse event associated with endoscopy, EndoFLIP, or treatment. Event severity will be reported using the AGREE classification, from grade I to V

From the index endoscopy through month 12.
Agreement Between Local and Central EndoFLIP Classification
時間枠:Index endoscopy, with subsequent central review of the same recording.

Agreement on EGJ opening category (reduced, inconclusive, or normal), quantified using Cohen's kappa with a 95% confidence interval.

Index endoscopy, with subsequent central review of the same recording.

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:Jorge Luis Núñez-Pizarro, MD、Hospital Clinic of Barcelona

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12月7日

一次修了 (推定)

2029年3月6日

研究の完了 (推定)

2029年12月6日

試験登録日

最初に提出

2026年11月4日

QC基準を満たした最初の提出物

2026年11月4日

最初の投稿 (実際)

2026年11月10日

学習記録の更新

投稿された最後の更新 (実際)

2026年11月10日

QC基準を満たした最後の更新が送信されました

2026年11月4日

最終確認日

2026年11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

  • HCB/2026/1095

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?

いいえ

IPD プランの説明

There is no plan to make individual participant data available to researchers outside the study team. Coded EndoFLIP recordings without direct participant identifiers will be transferred from participating sites to the coordinating center for central review as part of the study. The code key will remain at the originating site.

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

いいえ

米国FDA規制機器製品の研究

はい

米国で製造され、米国から輸出された製品。

はい

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。