NCT04257123

Brief Summary

A recent clinical trial demonstrated the efficacy of Gelesis100 use for weight loss (Obes 2019;27:205-216). The present trial is designed to explore the mechanisms by which it may work, i.e. by suppressing hunger, altering food intake and/or altering the efficiency of energy extraction from food.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
31

participants targeted

Target at P25-P50 for not_applicable

Timeline
Completed

Started Jan 2020

Typical duration for not_applicable

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

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Study Timeline

Key milestones and dates

Study Start

First participant enrolled

January 7, 2020

Completed
21 days until next milestone

First Submitted

Initial submission to the registry

January 28, 2020

Completed
8 days until next milestone

First Posted

Study publicly available on registry

February 5, 2020

Completed
10 months until next milestone

Primary Completion

Last participant's last visit for primary outcome

November 30, 2020

Completed
1.1 years until next milestone

Study Completion

Last participant's last visit for all outcomes

December 31, 2021

Completed
Last Updated

April 19, 2022

Status Verified

April 1, 2022

Enrollment Period

11 months

First QC Date

January 28, 2020

Last Update Submit

April 18, 2022

Conditions

Outcome Measures

Primary Outcomes (4)

  • Appetite Ratings

    Hunger, fullness, desire to eat and thirst will be measured on visual analogue scales with end anchors of "not at all" to "extremely." Ratings will be captured via Qualtrics software. Also, subjects will be asked to indicate when, during the meals, they feel full on the first and last days of the Controlled-Feeding periods.

    up to 2 weeks

  • Eating Behavior

    A battery of validated questionnaires related to Ingestive behavior will be completed. These include Power of Food Scale, Emotional Eating Scale, Three-Factor Eating Questionnaire-Revised, Food Craving Inventory-II, Barratt Impulsiveness Scale, Adult Eating Behavior Scale, Self-Regulation of Eating Behavior Questionnaire for Adults, Meal Pattern Questionnaire, Study-Specific Appetite and Eating Behavior Questionnaire.

    up to 2 weeks

  • Dietary Assessment

    Diet composition during the free-feeding periods will be assessed by diet histories taken by a registered dietitian through the Nutrition Assessment Center.

    up to 2 weeks

  • Fecal energy and macronutrient compostion

    A quantitative stool collection method will be used. Collections will be homogenized and aliquots will be freeze-dried. Energy and macronutrient composition analysis of feces will be conducted in triplicate.

    With initiation of each Controlled-Feeding period, participants will swallow a capsule containing a red dye. They will monitor bowel movements until the red dye is passed. All stool will be collected from this point forward.

Secondary Outcomes (2)

  • Weight

    up to 8 weeks

  • Compliance

    up to 2 weeks

Study Arms (2)

Controlled-Feeding

EXPERIMENTAL

For two weeks (separated by a wash-out week), participants will consume all meals in the Nutrition Science facility.

Device: Gelesis100Other: Placebo

Free-Feeding

EXPERIMENTAL

For two weeks (separated by a wash-out week), participants will receive no dietary guidance and will be allowed to consume whatever they desire.

Device: Gelesis100Other: Placebo

Interventions

Participants will administer Gelesis100 before lunch and dinner meals.

Controlled-FeedingFree-Feeding
PlaceboOTHER

Participants will administer a placebo before lunch and dinner meals.

Controlled-FeedingFree-Feeding

Eligibility Criteria

Age18 Years - 60 Years
Sexall
Healthy VolunteersYes
Age GroupsAdult (18-64)

You may qualify if:

  • Age 18-60 years (this is to reduce the number of people who apply that are taking medications or have chronic diseases).
  • BMI =25-40 kg/m2

You may not qualify if:

  • Body weight fluctuation of \>5kg in the past 3 months
  • Participant is allergic to or objects to consuming CMC, Citric acid, Sodium stearyl fumarate, titanium oxide, or gelatin.
  • Participants with esophageal anatomic anomalies including webs, diverticuli, and rings
  • Participants with suspected strictures (such as patients with Crohn's disease)
  • Participants with complications from prior gastrointestinal surgery that could affect GI transit and motility
  • Participants with active gastrointestinal conditions such as gastro-esophageal reflux disease (GERD), ulcers, or heartburn
  • Participants taking prescribed medications

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Purdue Univeristy

West Lafayette, Indiana, 47907, United States

Location

MeSH Terms

Conditions

Appetitive Behavior

Condition Hierarchy (Ancestors)

Behavior, AnimalBehavior

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
DOUBLE
Who Masked
PARTICIPANT, INVESTIGATOR
Masking Details
Treatment with Gelesis100 or placebo will be double-blinded and randomly assigned.
Purpose
BASIC SCIENCE
Intervention Model
CROSSOVER
Model Details: Following an initial 3-day run-in period (feeding only), participants will be randomly assigned to two 1-week controlled feeding periods with and without Gelesis100. After a one week washout, participants will complete the other pattern. Following another 1-week washout, participants will be randomly assigned again to two 1-week free-feeding periods with and without Gelesis100. After a one week washout, participants will complete the other pattern.
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Distinguished Professor of Nutrition Science

Study Record Dates

First Submitted

January 28, 2020

First Posted

February 5, 2020

Study Start

January 7, 2020

Primary Completion

November 30, 2020

Study Completion

December 31, 2021

Last Updated

April 19, 2022

Record last verified: 2022-04

Locations