Clinical trial Recruiting at 2 sites Phase 4 Interventional Ages 18 and up

Understanding muscle fibrosis in achalasia using new imaging technology

Official title: Comprehensive Assessment of Histopathologic and Physiologic Profile in Esophageal Motility Disorders

Run by Emory University · NCT04641702 · Data updated 2026-11-12

This study is testing a new imaging method to see how muscle changes in the esophagus relate to achalasia, hoping to find better ways to help patients with this condition.

Quick facts

PhasePhase 4
Study typeInterventional
Ages18 Years and up
SexAll
Enrollment80 (estimated)
SponsorEmory University
Academic / other
Locations2 sites (Atlanta, Georgia and 1 other locations)
StatusRecruiting
StartedMarch 17, 2021
Main results expectedDecember 2028
Study endsDecember 2028
Registry record updatedSeptember 16, 2026
Trial IDNCT04641702 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates include adults aged 18 and older diagnosed with achalasia or related esophageal motility disorders who are being evaluated at Emory University facilities.

Probably not a fit

Patients under 18, pregnant women, prisoners, or those who do not speak English may not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This clinical trial investigates the relationship between muscle fibrosis and lower esophageal sphincter (LES) measurements using Functional Lumen Imaging Probe (FLIP) Topography after a pharmacologic challenge. The study aims to enhance the understanding of achalasia, a condition characterized by the inadequate opening of the LES, by exploring both active and passive factors contributing to the disease. Participants will undergo an atropine challenge and esophageal muscle biopsy to gather data on their condition. The goal is to identify earlier intervention opportunities for patients with achalasia.

Why it matters

Potential benefit: If successful, this study could lead to earlier and more effective interventions for patients with achalasia.

How similar studies have gone: While this approach utilizes novel technology, similar studies have shown promise in understanding esophageal motility disorders.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Male or female patients, age 18 and above.
* Evaluated by Emory Digestive Diseases Clinic, Emory Motility Lab, the Emory Endoscopy Unit, or Emory Surgery Department starting October 1, 2020.
* Has a diagnosis of achalasia or an esophageal motility disorder with confirmed evaluation by one of the following modalities: functional lumen imaging probe (FLIP) or high-resolution esophageal manometry (for Aim 1)
* Undergoing a diagnostic Functional Lumen Imaging Probe (FLIP) study at Emory University Hospital with anesthesia assistance (for Aim 1)
* Undergoing Heller myotomy or per-oral endoscopic myotomy for the treatment of their esophageal motility disorder (for Aim 2)
* 8 healthy control esophageal samples will be obtained from the NDRI donor program for Aim 2.

Exclusion Criteria:

* Patients younger than 18 years old
* Pregnant women
* Prisoners
* Non-English-speaking patients - the rationale is that the symptom characterization and outcome data are measured on detailed and fairly lengthy (5-7 pages) questionnaires written in English with some medical terms. These are standardized questionnaires with no short forms available.
* Cognitively impaired adults unable to provide informed consent
* Cardiac disease in the form of - arrhythmia requiring intracardiac defibrillator (ICD) or pacemaker, baseline bradycardia with HR \<60 or tachycardia with a heart rate (HR) \> 90, congestive heart failure with ejection fraction \<35%, history of myocardial infarction, baseline mean arterial pressure (MAP) \<65 or systolic blood pressure (BP) \>140, asthma or chronic obstructive pulmonary disease, urinary retention requiring the use of foley catheterization (including intermittent use), narrow-angle glaucoma, myasthenia gravis, glomerular filtration rate (GFR) \<60 \[exclusions for Aim 1 only\]

Where it's running

  • Emory University Hospital
    Atlanta, Georgia, United States
    Recruiting
  • Emory Saint Joseph's Hospital
    Atlanta, Georgia, United States
    Recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.