Correlation of Oropharyngeal Pepsin and Gastroesophageal (GE) Reflux
Public ClinicalTrials.gov record NCT01091805. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
Brief summary
Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.
The purpose of this research study is to see if GE reflux events are associated with increasing levels of pepsin in spit samples. Pepsin is a special protein called an "enzyme" that is made only in your stomach. It is not normally found in your throat. Pepsin breaks down food proteins that you eat to form nutritional building blocks that your body can use to grow. An enzyme is a substance that helps break down proteins. Gastroesophageal reflux disease (GERD) is very common in infants and children, but can result in serious health problems if not accurately diagnosed. The investigators currently do not have a definitive test to be used as a standard for diagnosing pediatric GERD. Measurement of pepsin, an enzyme normally produced only in the stomach, has been used as a non-invasive way to detect gastric aspiration (reflux of stomach fluid into the airway) in both adults and children, but using pepsin to detect reflux has not been tested. Since pepsin should not be present in the normal esophagus and respiratory tract, but is always present in reflux fluid from the stomach, the investigators believe that the more GE reflux the investigators detect, the higher the levels of pepsin the investigators see in the fluid collected from the mouth. If patients do not have GE reflux, but have swallowing problems alone in which food or liquid goes into the airway, the investigators expect that these patients will have no pepsin in the fluid collected from their mouth. The investigators will test these hypotheses by measuring pepsin levels from mouth fluid and comparing them with the number of GE reflux events the investigators find using the pH/impedance (MII (multichannel intraluminal impedance)) test. Since the investigators are interested in pepsin levels for all types of reflux - acid and non-acid -the investigators will study children whether or not they are on acid blocking medicines. The investigators will also look at pepsin levels in patients whose pH/MII is normal, but have aspiration alone that the investigators find on a modified barium swallow (MBS) study. The investigators will measure pepsin levels in healthy children with no reflux symptoms and no swallowing problems as the investigators controls. The investigators anticipate that this study will show a positive correlation between GE reflux events and the presence of oropharyngeal pepsin, which may allow us to use pepsin as a way to test for reflux.
Study identification
- NCT ID
- NCT01091805
- Recruitment status
- Completed
- Study type
- Observational
- Phase
- Not listed
- Enrollment
- 143 participants
Conditions and interventions
Conditions
Interventions
Not listed
Eligibility (public fields only)
- Age range
- Not listed
- Sex
- All
- Healthy volunteers
- Accepts healthy volunteers
This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.
Study timeline
- Start date
- Nov 30, 2008
- Primary completion
- Aug 31, 2013
- Completion
- Sep 30, 2013
- Last update posted
- Apr 12, 2017
2008 – 2013
United States locations
- U.S. sites
- 1
- U.S. states
- 1
- U.S. cities
- 1
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| Wake Forest University Baptist Medical Center | Winston-Salem | North Carolina | 27157 | — |
Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT01091805, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
- What this page does not do
- No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
- Where the data comes from
- Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
- Last refresh
- Last update posted Apr 12, 2017 · Synced Sep 5, 2026
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Open the official record
The complete protocol, eligibility criteria, and contact information for NCT01091805 live on ClinicalTrials.gov.