Mechanisms of Weight Loss in Patients Diagnosed With Achalasia

• Conditions: Achalasia
• Interventions: Procedure: pneumatic dilation; Procedure: surgical myotomy

• Registration Number: NCT03063463
• Lead Sponsor: Vanderbilt University Medical Center

Brief Summary

Currently there are no existing data to determine why some achalasia patients lose weight while others do not. The purpose of this study is to gather data from patients diagnosed with achalasia to determine if differences may be identified between those who lose weight and those who do not that would help us better understand the mechanism of weight loss in this population.

Detailed Description

Patients either diagnosed with or being evaluated for achalasia and scheduled for standard clinic visits with the principal investigator as part of their routine care will be considered for participation in this study. Blood work, vital signs, and 24-hour dietary recall will be collected over a period of one year. These data will lay the foundation for future scientific endeavors to : a) assess requirements for dietary and/or nutritional supplements; b) formulate an achalasia diet; c) develop clinical practice standards; and d) design an intervention study.

Study Timeline

• Study Start: 2017-02-15
• Study First Submitted: 2017-02-21
• Study First Submitted QC: 2017-02-21
• Study First Posted: 2017-02-24
• Status Verified: 2025-05
• Last Update Submitted: 2025-05-15
• Last Update Posted: 2025-05-16
• Primary Completion: 2026-06
• Study Completion: 2026-06

Recruitment & Eligibility

• Status: ENROLLING_BY_INVITATION
• Sex: All
• Target Recruitment: 50

Inclusion Criteria

1. Subject is able to provide written informed consent to participate in the study before completing any study-related procedures
2. Subject is male or female aged 18-75 years, inclusive at time of consent.
3. Subject has a documented diagnosis of achalasia based on high resolution manometry and endoscopy report.
4. Subject has been or will be scheduled to undergo either EGD with pneumatic dilation or surgical myotomy as routine care for treatment of achalasia.
5. Subject is willing and has an understanding and ability to fully comply with study procedures and restrictions defined in this protocol.

Exclusion Criteria

1. Subject has any condition or abnormality, current or past that, in the opinion of the principal investigator, would compromise the safety of the subject or interfere with or complicate the assessment of signs or symptoms of achalasia. Such conditions may include psychiatric problems; neurologic deficits or disease; developmental delay; lung transplant; or previous gastroesophageal surgery.
2. Subject has had previous pneumatic dilation of treatment of achalasia.
3. Subject has had botulinum toxin (botox) injection for treatment of achalasia.
4. Subject has a history or high risk of noncompliance with treatment or regular clinic visits.

Study & Design

• Study Type: OBSERVATIONAL
• Study Design: Not specified

Arm && Interventions

Group	Intervention	Description
Pneumatic Dilation	pneumatic dilation	Subject with achalasia undergoing routine care EGD (Esophagogastroduodenoscopy) with pneumatic dilation
Surgical Myotomy	surgical myotomy	Subject with achalasia undergoing routine care EGD with surgical myotomy

Primary Outcome Measures

Name	Time	Method
Body weight	One year	Currently there are no existing data to determine why some achalasia patients lose weight while others do not. The purpose of this study is to determine if differences may be identified between those who lose weight and those who do not. Body weight will be monitored at study visits throughout the study.

Trial Locations

Locations (1)

Vanderbilt University Medical Center; 🇺🇸 Nashville, Tennessee, United States