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POEM Trial: Multi-center Study Comparing Endoscopic Pneumodilation and Per Oral Endoscopic Myotomy (POEM)

This study is currently recruiting participants.
Verified July 2016 by Guy Boeckxstaens, Katholieke Universiteit Leuven
ClinicalTrials.gov Identifier:
First Posted: February 18, 2013
Last Update Posted: July 27, 2016
The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Know the risks and potential benefits of clinical studies and talk to your health care provider before participating. Read our disclaimer for details.
Information provided by (Responsible Party):
Guy Boeckxstaens, Katholieke Universiteit Leuven
The aim of the study is to compare the efficacy of per-oral endoscopic myotomy (POEM) to the efficacy of pneumodilation as the initial treatment of symptomatic idiopathic achalasia. It is hypothesized that POEM has a higher long-term efficacy than pneumodilation in treatment of therapy-naive patients with idiopathic achalasia.

Condition Intervention
Achalasia Procedure: PD Procedure: POEM

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Official Title: A Prospective Randomized Multi-center Study Comparing Endoscopic Pneumodilation and Per Oral Endoscopic Myotomy (POEM) as Treatment of Idiopathic Achalasia

Resource links provided by NLM:

Further study details as provided by Guy Boeckxstaens, Katholieke Universiteit Leuven:

Primary Outcome Measures:
  • therapeutic succes [ Time Frame: 2 years ]

    The time till failure is the primary outcome parameter. The time is measured from date of pneumatic dilation (last session) or POEM to date of relapse of symptoms (date of establishment). Symptoms will be evaluated using the Eckardt scoring system (Table 1.). Therapeutic success is defined as a drop in Eckardt score to ≤ 3 after treatment and symptom control at yearly follow-up which is also defined as an Eckardt score of ≤ 3.

    If symptoms recur within patients randomized for pneumatic dilation, retreatment with pneumatic dilation is allowed according to the protocol. If retreatment does not result in reduction of the symptom score below 4, the patient will be considered as a treatment failure.

Secondary Outcome Measures:
  • quality of life [ Time Frame: 2 years ]
    The quality of life is determined using a general QoL questionnaire, namely the SF36 questionnaire. In addition, a more disease specific questionnaire, i.e. the EORTC QLQ-OES24 questionnaire, is filled out. These questionnaires have scored the QoL at fixed time points during follow-up (1 month, 3 months and yearly).

  • complication rate [ Time Frame: 2 years ]

    Complications (perforation, bleeding, etc) occurring during or immediately following the procedure are recorded by the attending phycisian.

    In addition, gastroesophageal reflux is measured using 24h pHmetry after 3 months and 1 year. The number of patients with pathological acid exposure (>4.5% of time a pH<4) will be assessed. Endoscopy is performed after 1 year to detect esophagitis. Esophagitis rates and LA grades of esophagitis will be assessed.

  • need for retreetment [ Time Frame: 2 years ]
    Retreatment is allowed in the pneumodilation group when symptoms recur, which is defined as an Eckardt score of > 3. Symptom scores are assessed after one month, three months and then yearly.

Estimated Enrollment: 150
Study Start Date: October 2013
Estimated Study Completion Date: January 2023
Estimated Primary Completion Date: January 2018 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Active Comparator: PD
Procedure: PD
Active Comparator: POEM
peroral endoscopic myotomy
Procedure: POEM
peroral endoscopic myotomy


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Ages Eligible for Study:   18 Years to 75 Years   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Between 18 and 75 yr of age
  • Manometric diagnosis of achalasia
  • Eckardt score > 3
  • Informed consent

Exclusion Criteria:

  • Severe cardio-pulmonary disease or other serious disease leading to unacceptable surgical risk previous treatment, except treatment with nitroderivatives, Ca++ channel blockers or sildenafil, or dilation with Savary bougies or balloons of 2 cm diameter or smaller.

Pseudo-achalasia Mega-esophagus (> 7 cm) and/or sigmoid-like esophagus Previous esophageal or gastric surgery (except for gastric perforation) Not capable to fill out questionnaires (f.e. due to language barrier) Not available for follow-up Esophageal diverticula in the distal esophagus Malignant or premalignant esophageal lesions Patients with liver cirrhosis and/or esophageal varices Pregnancy

  Contacts and Locations
Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT01793922

Contact: G. Boeckxstaens, MD, PhD 016 34 28 65 an.moonen@med.kuleuven.be
Contact: A Moonen, MD

UZ Leuven Recruiting
Leuven, Belgium, 3000
Contact: A Moonen, MD         
Principal Investigator: G Boeckxstaens, MD, PhD         
Sponsors and Collaborators
Katholieke Universiteit Leuven
  More Information

Responsible Party: Guy Boeckxstaens, Prof. Dr., Katholieke Universiteit Leuven
ClinicalTrials.gov Identifier: NCT01793922     History of Changes
Other Study ID Numbers: S55020
First Submitted: December 12, 2012
First Posted: February 18, 2013
Last Update Posted: July 27, 2016
Last Verified: July 2016

Additional relevant MeSH terms:
Esophageal Achalasia
Esophageal Motility Disorders
Deglutition Disorders
Esophageal Diseases
Gastrointestinal Diseases
Digestive System Diseases