A Study of Weekly Oral Dose of Ecnoglutide (VRB-101) for Weight Maintenance in Participants Who Have Obesity or Overweight With Weight-Related Comorbidities
A Randomized, Double-Blind, Placebo-Controlled Phase 2 Study to Identify the Optimal Weekly Oral Dose of Ecnoglutide (VRB-101) for Maintaining Body Weight in Participants With Obesity or Overweight Who Have Weight-Related Comorbidities
1 other identifier
interventional
120
1 country
17
Brief Summary
The purpose of this study is to identify the weekly oral dose of VRB-101 (oral ecnoglutide) that can effectively maintain body weight in participants with a history of obesity or overweight with weight-related comorbidities.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P50-P75 for phase_2 obesity
Started May 2026
Shorter than P25 for phase_2 obesity
17 active sites
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
First Submitted
Initial submission to the registry
April 2, 2026
CompletedFirst Posted
Study publicly available on registry
April 28, 2026
CompletedStudy Start
First participant enrolled
May 1, 2026
CompletedPrimary Completion
Last participant's last visit for primary outcome
November 30, 2026
ExpectedStudy Completion
Last participant's last visit for all outcomes
December 31, 2026
April 28, 2026
April 1, 2026
7 months
April 2, 2026
April 21, 2026
Conditions
Keywords
Outcome Measures
Primary Outcomes (1)
To identify the dose of VRB-101 for weight maintenance
Baseline to End of Treatment (Week 17)
Secondary Outcomes (5)
Percent change in body weight from baseline
Baseline to End of Treatment (Week 17)
Absolute change in body weight from baseline
Baseline to End of Treatment (Week 17)
Number of participants with treatment-emergent adverse events (TEAEs), serious adverse events (SAEs) and Adverse events of special interest (AESIs)
Baseline to Week 24
Change in blood pressure from baseline
Baseline to End of Treatment (Week 17)
Change in Columbia-Suicide Severity Rating Scale (C-SSRS) from baseline
Baseline to End of Treatment (Week 17)
Study Arms (4)
VRB-101 (Active Arm 1)
EXPERIMENTALParticipants will receive VRB-101 once every week.
VRB-101 (Active Arm 2)
EXPERIMENTALParticipants will receive VRB-101 once every week.
VRB-101 (Active Arm 3)
EXPERIMENTALParticipants will receive VRB-101 once every week.
Placebo
PLACEBO COMPARATORParticipants will receive matching placebo to VRB-101 once every week.
Interventions
Eligibility Criteria
You may qualify if:
- Have a history of BMI of ≥30 kg/m2 OR ≥27 kg/m2 and \<30 kg/m2 with at least 1 weight-related comorbidity at the time of initiation of subcutaneous (SC) semaglutide and/or tirzepatide treatment.
- Documented history of having obesity or overweight with weight-related comorbidities per medical records at the time of initiation of SC semaglutide and/or tirzepatide treatment.
- History of treatment with weekly SC semaglutide and/or tirzepatide for a minimum of 6 months prior to Screening.
- Documented weight reduction of ≥10% in 6 months and no clinically relevant weight regain.
- Participants of childbearing potential (POCBP) must be non-pregnant and non-lactating and must agree to use study-specified contraceptive methods.
You may not qualify if:
- Current or past diagnosis of diabetes mellitus \[type 1 diabetes mellitus (T1DM) or type 2 diabetes mellitus (T2DM), or other forms of diabetes mellitus\]. A participant with a history of gestational diabetes may be included in the study if the participant has HbA1c \<6.5% at Screening and is not on medication to lower glucose.
- At least 1 laboratory value suggestive of diabetes during screening, including 1 or more of HbA1c ≥6.5% (48 mmol/mol) or random glucose ≥200 mg/dL (11.1 mmol/L).
- Diagnosed with obesity due to endocrinologic disorders (for example, Cushing's syndrome) or diagnosed monogenetic or syndromic forms of obesity (for example, melanocortin 4 receptor deficiency or Prader-Willi syndrome)
- History of clinically significant gastric emptying abnormality (for example, severe gastroparesis or gastric outlet obstruction).
- Evidence of uncontrolled hypothyroidism or hyperthyroidism based on an abnormal thyroid-stimulating hormone (TSH).
- Personal or family history (first-degree relative) of multiple endocrine neoplasia type 2A or type 2B, thyroid C-cell hyperplasia, or medullary thyroid carcinoma.
- Evidence of a significant, uncontrolled endocrine abnormality (for example, thyrotoxicosis or adrenal crises)
- Renal impairment measured as eGFR \<30 mL/min/1.73 m2
- History of acute or chronic pancreatitis or clinically significant gallbladder disease.
- Triglycerides \>500 mg/dL (5.7 mmol/L) at Screening.
- Poorly controlled hypertension or an elevated resting pulse rate (\>100 bpm).
- Current treatment with or history of treatment with (within 3 months prior to Screening) medications that may cause significant weight gain.
- Prior or planned surgical treatment for obesity, plan to have endoscopic and/or device-based therapy for obesity or have had device removal within the last 6 months prior to Screening.
- Known hypersensitivity to any of the study drug ingredients.
- Are pregnant or lactating at Screening or planning to become pregnant (self or partner) at any time during the study and for at least 60 days after completion of the study.
Contact the study team to confirm eligibility.
Sponsors & Collaborators
Study Sites (17)
Clinical Study Site 202
Cullman, Alabama, 35055, United States
Clinical Study Site 203
Phoenix, Arizona, 85028, United States
Clinical Study Site 212
Tempe, Arizona, 85281, United States
Clinical Study Site 201
Little Rock, Arkansas, 72205, United States
Clinical Study Site 214
Santa Maria, California, 93454, United States
Clinical Study Site 216
Stamford, Connecticut, 06905, United States
Clinical Study Site 204
Bradenton, Florida, 34209, United States
Clinical Study Site 215
St. Petersburg, Florida, 33704, United States
Clinical Study Site 213
El Dorado, Kansas, 67042, United States
Clinical Study Site 210
Petal, Mississippi, 39465, United States
Clinical Study Site 205
Buffalo, New York, 14217, United States
Clinical Study Site 206
Lenoir, North Carolina, 28645, United States
Clinical Study Site 209
Jackson, Tennessee, 38305, United States
Clinical Study Site 217
Houston, Texas, 77008, United States
Clinical Study Site 211
Houston, Texas, 77040, United States
Clinical Study Site 218
Irving, Texas, 75063, United States
Clinical Study Site 207
Richmond, Virginia, 23226, United States
MeSH Terms
Conditions
Condition Hierarchy (Ancestors)
Central Study Contacts
Study Design
- Study Type
- interventional
- Phase
- phase 2
- Allocation
- RANDOMIZED
- Masking
- TRIPLE
- Who Masked
- PARTICIPANT, CARE PROVIDER, INVESTIGATOR
- Purpose
- TREATMENT
- Intervention Model
- PARALLEL
- Sponsor Type
- INDUSTRY
- Responsible Party
- SPONSOR
Study Record Dates
First Submitted
April 2, 2026
First Posted
April 28, 2026
Study Start
May 1, 2026
Primary Completion (Estimated)
November 30, 2026
Study Completion (Estimated)
December 31, 2026
Last Updated
April 28, 2026
Record last verified: 2026-04