Establishing a Pediatric Reference Range for the 13C-Spirulina Gastric Emptying Breath Test (GEBT)

NCT ID: NCT06004596

Last Updated: 2024-10-03

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

182 participants

Study Classification

INTERVENTIONAL

Study Start Date

2023-03-17

Study Completion Date

2024-09-30

Brief Summary

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The goal of this clinical trial is to define the normal response to the 13C-Spirulina Gastric Emptying Breath Test (GEBT) in children, so that we can use this test to help diagnose children that are suspected of having a condition called gastroparesis, which means that food doesn't empty from their stomach normally.

Participants will blow into test tubes to collect breath samples before and after eating a scrambled egg GEBT meal that contains a small amount of specially grown Spirulina (a blue-green alga used as a dietary supplement) that contains mostly carbon-13 (a non-radioactive kind of carbon atom). Analysis of the amount of 13C in the carbon dioxide in breath before and after eating the GEBT meal can measure how fast food is emptying from the stomach.

Detailed Description

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Children will complete questionnaires to ensure that they are qualified to enter the study and are likely to have normal gastric emptying rates. Informed consent/assent will be obtained.

Breath samples will be collected by children blowing into test tubes before and after eating a 13C-Spirulina GEBT meal. Breath samples will be collected and the test will be administered via telehealth or at one of the children's hospital clinics.

Researchers will analyze results from different age groups to see if there are differences in normal gastric emptying in younger/older children and boys/girls.

Conditions

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Gastroparesis

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

SINGLE_GROUP

Primary Study Purpose

DIAGNOSTIC

Blinding Strategy

NONE

Study Groups

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Reference Range determination

13C-Spirulina Gastric Emptying Breath Test (GEBT) administered to healthy participants

Group Type OTHER

13C-Spirulina Gastric Emptying Breath Test (GEBT)

Intervention Type DIAGNOSTIC_TEST

Diagnostic test

Biological Variability

13C-Spirulina GEBT administered a second time to subset of participants to determine pediatric biological variability.

Group Type ACTIVE_COMPARATOR

13C-Spirulina Gastric Emptying Breath Test (GEBT)

Intervention Type DIAGNOSTIC_TEST

Diagnostic test

13C-Spirulina Gastric Emptying Breath Test (GEBT) - repeat

Intervention Type DIAGNOSTIC_TEST

Diagnostic test - repeat for biological variability deterination

Interventions

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13C-Spirulina Gastric Emptying Breath Test (GEBT)

Diagnostic test

Intervention Type DIAGNOSTIC_TEST

13C-Spirulina Gastric Emptying Breath Test (GEBT) - repeat

Diagnostic test - repeat for biological variability deterination

Intervention Type DIAGNOSTIC_TEST

Eligibility Criteria

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Inclusion Criteria

* Children ages 7 to 18 years who provide written assent and whose parents provide written consent for participation
* Healthy and without any significant prior medical history or developmental delays
* Able to eat the test meal and provide breath samples.-

Exclusion Criteria

Any known physician-diagnosed medical (gastrointestinal, pancreatic, or liver disease that may cause malabsorption, neurological) or psychiatric disease

* Chronic pulmonary disease including moderate/severe reactive airway disease requiring treatment with a daily inhaler
* Type 1 or 2 Diabetes
* Chronic gastrointestinal symptoms or functional gastrointestinal disorders
* Mental retardation or pervasive developmental disorder
* Currently receiving prescription drug therapy that may affect gastric motor function or sensation
* Any over-the-counter or herbal supplements that may affect gastric motor function or sensation
* Allergy to Spirulina, egg, milk, wheat or gluten (unless consuming gluten free crackers with the test meal) or known intolerance to any ingredient in the test meal
Minimum Eligible Age

7 Years

Maximum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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Medical College of Wisconsin

OTHER

Sponsor Role collaborator

Baylor College of Medicine

OTHER

Sponsor Role collaborator

Cairn Diagnostics

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Catherine E Williams, PhD

Role: PRINCIPAL_INVESTIGATOR

Cairn Diagnostics

Locations

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Cairn Diagnostics

Brentwood, Tennessee, United States

Site Status

Texas Children's Hospital/Baylor College of Medicine

Houston, Texas, United States

Site Status

Medical College of Wisconsin

Milwaukee, Wisconsin, United States

Site Status

Countries

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United States

Other Identifiers

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CDX-CD-PRO-442

Identifier Type: -

Identifier Source: org_study_id

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