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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.

研究概览

地位

尚未招聘

条件

干预/治疗

详细说明

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.

研究类型

介入性

注册 (估计的)

115

阶段

  • 不适用

联系人和位置

本节提供了进行研究的人员的详细联系信息，以及有关进行该研究的地点的信息。

学习联系方式

  • 姓名：Jorge Luis Núñez-Pizarro, MD
  • 电话号码：3459 +34 932 27 54 00
  • 邮箱：jlnunez@clinic.cat

学习地点

  • 西班牙
    • Barcelona
      • Barcelona、Barcelona、西班牙、08036
        • Hospital Clínic de Barcelona
        • 接触：
          • Jorge Luis Nuñez-Pizarro, MD
          • 电话号码：3459 +34 932 27 54 00
          • 邮箱：jlnunez@clinic.cat
        • 首席研究员：
          • Jorge Luis Nuñez-Pizarro, MD
        • 副研究员：
          • Isis Karina Araujo, MD, PhD
        • 副研究员：
          • Elizabeth Barba Orozco, MD, PhD
        • 副研究员：
          • Gloria Fernández-Esparrach, MD, PhD
        • 副研究员：
          • Alberto Ezquerra, MD
    • Madrid
      • Madrid、Madrid、西班牙、28041
        • Hospital Universitario 12 de Octubre
        • 接触：
        • 首席研究员：
          • Isabel Castel de Lucas, MD
      • Madrid、Madrid、西班牙、28040
        • Hospital Clínico San Carlos
        • 接触：
        • 首席研究员：
          • Constanza Ciriza de los Ríos, MD, PhD
        • 首席研究员：
          • Ana Zatarain Valles, MD
      • Madrid、Madrid、西班牙
        • Hospital de La Princesa
        • 接触：
        • 首席研究员：
          • Cecilio Santander Vaquero, MD, PhD
    • Majadahonda
      • Madrid、Majadahonda、西班牙、28222
        • Hospital Universitario Puerta de Hierro Majadahonda
        • 接触：
        • 首席研究员：
          • Rosalia González-Miyar, MD
    • Pamplona
      • Pamplona、Pamplona、西班牙、31008
        • Hospital Universitario de Navarra
        • 接触：
        • 首席研究员：
          • Fermin Estremera-Arévalo, MD, PhD

参与标准

研究人员寻找符合特定描述的人，称为资格标准。这些标准的一些例子是一个人的一般健康状况或先前的治疗。

资格标准

适合学习的年龄

18年 及以上 (成人、年长者)

接受健康志愿者

不

有资格学习的性别

全部

描述

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.

学习计划

本节提供研究计划的详细信息，包括研究的设计方式和研究的衡量标准。

研究是如何设计的？

设计细节

  • 主要用途：治疗
  • 分配：不适用
  • 介入模型：单组作业
  • 屏蔽：无（打开标签）

武器和干预

参与者组/臂
干预/治疗
实验性的：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.
诊断测试：EndoFLIP Panometry

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.

其他名称：
  • Functional Lumen Imaging Probe
  • Impedance Planimetry
  • FLIP Panometry
药品：Botulinum Toxin Type A (BOTOX) Injection

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.

其他名称：
  • 保妥适

研究衡量的是什么？

主要结果指标

结果测量
措施说明
大体时间
Proportion of Participants With Clinical Response at 3 Months
大体时间：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.

次要结果测量

结果测量
措施说明
大体时间
Clinical Response During Follow-up
大体时间：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
大体时间：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
大体时间：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
大体时间：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
大体时间：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
大体时间：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
大体时间：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
大体时间：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.

合作者和调查者

在这里您可以找到参与这项研究的人员和组织。

赞助

Hospital Clinic of Barcelona

合作者

Institut d'Investigacions Biomèdiques August Pi i Sunyer

调查人员

  • 首席研究员：Jorge Luis Núñez-Pizarro, MD、Hospital Clinic of Barcelona

出版物和有用的链接

负责输入研究信息的人员自愿提供这些出版物。这些可能与研究有关。

一般刊物

研究记录日期

这些日期跟踪向 ClinicalTrials.gov 提交研究记录和摘要结果的进度。研究记录和报告的结果由国家医学图书馆 (NLM) 审查，以确保它们在发布到公共网站之前符合特定的质量控制标准。

研究主要日期

学习开始 (估计的)

2026年12月7日

初级完成 (估计的)

2029年3月6日

研究完成 (估计的)

2029年12月6日

研究注册日期

首次提交

2026年11月4日

首先提交符合 QC 标准的

2026年11月4日

首次发布 (实际的)

2026年11月10日

研究记录更新

最后更新发布 (实际的)

2026年11月10日

上次提交的符合 QC 标准的更新

2026年11月4日

最后验证

2026年11月1日

更多信息

与本研究相关的术语

关键字

其他相关的 MeSH 术语

其他研究编号

  • HCB/2026/1095

计划个人参与者数据 (IPD)

计划共享个人参与者数据 (IPD)？

不

IPD 计划说明

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.

药物和器械信息、研究文件

研究美国 FDA 监管的药品

不

研究美国 FDA 监管的设备产品

是的

在美国制造并从美国出口的产品

是的

此信息直接从 clinicaltrials.gov 网站检索，没有任何更改。如果您有任何更改、删除或更新研究详细信息的请求，请联系 register@clinicaltrials.gov. clinicaltrials.gov 上实施更改，我们的网站上也会自动更新.

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