Study of Subcutaneously Administered ENT-03 for the Treatment of Obesity and Diabetes

May 29, 2026 updated by: Metabolics Pharma

A First in Human, Single Center, Single Dose, Randomized, Placebo-controlled, Dose, Escalating Study to Evaluate Safety, Tolerability, Pharmacokinetics and Pharmacodynamics of Subcutaneously Administered ENT-03S for the Treatment of Obesity and Diabetes

Single center, single-dose, randomized, placebo-controlled, dose-escalating study to evaluate, safety, tolerability, pharmacokinetics, and pharmacodynamics of escalating doses of ENT-03S in obese but otherwise healthy subjects and in subjects with obesity and Type 2 diabetes.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
49

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Phase 1

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Study Contact Backup

Study Locations

  • United States
    • California
      • San Diego, California, United States, 91911
        • ProSciento

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

Yes

Description

Inclusion Criteria:

  1. Subjects aged 18-70 years, both genders.
  2. Healthy as determined by a physician, based on history, medical examination, vital signs, and laboratory tests.
  3. Males that agree to use condoms for the duration of participation in the study.
  4. Females of non-child-bearing potential (i.e., tubal ligation, hysterectomy, or postmenopausal).
  5. Female patients of child-bearing potential with negative serum pregnancy tests and who agree to use double-barrier contraception during the study.
  6. Subjects must be able to read, speak, and understand English and/or Spanish and provide written informed consent, and be willing and able to comply with study procedures.
  7. Subjects must have a BMI 30-35 kg/m2 inclusive assessed immediately prior to screening.
  8. Fasting insulin level ≥11 mIU/L.
  9. HbA1c < 8.5% (diabetic subjects only).
  10. Subjects with Type 2 diabetes on no anti-diabetic medication or on stable doses of metformin for 4 weeks or more (diabetic cohorts only).
  11. No history of active or chronic disease other than that allowed by study: hypertension, hyperlipidemia, hyperglycemia, GERD, heartburn, or Type 2 diabetes (cohorts 6 and 7 only).

Exclusion Criteria:

  1. History of excessive alcohol use (defined as >21 drinks per week for males and >14 drinks per week for females), recreational drug use within the past three months, or failure on urinary drug screen.
  2. Pregnant or breastfeeding within six months of screening assessment.
  3. Substantial changes in eating habits or exercise routine within the preceding three months.
  4. Evidence of eating disorders.
  5. >5% weight change in the past three months.
  6. Bariatric surgery within the past five years.
  7. Significant renal impairment (eGFR <60 mg/mL/1.73m2).
  8. Patients on anti-diabetic medications other than metformin.
  9. Patients with gastroparesis.
  10. Liver function tests (i.e., ALT, AST, alkaline phosphatase) greater than twice the upper limit of normal upon repeated measurements.
  11. Diseases interfering with metabolism and/or ingestive behavior (e.g., myxedema, Cushing's disease, schizophrenia, major psychoses).
  12. History of major depressive disorder within the previous two years, a lifetime history of suicide attempt, suicidal behavior within the previous month, or history of other severe psychiatric disorders.
  13. Score of >15 on the Columbia Suicide Severity Rating Scale (C-SSRS).

  14. Use of medications affecting body weight within the past three months:

    • Drugs approved for the treatment of obesity
    • Cyproheptadine or medroxyprogesterone
    • Atypical anti-psychotic drugs
    • Tricyclic antidepressants
    • Lithium, MAO's, glucocorticoids
    • SSRI's or SNRI's
    • Antiepileptic drugs
  15. Any clinically significant abnormality following the Investigator's review of the physical examination and clinical laboratory tests.
  16. A baseline prolongation of QT/QTc interval after repeated measurements of >450 ms; a history of unexplained syncope, cardiac arrest, unexplained cardiac arrhythmias or torsades de pointes, structural heart disease, or a family history of Long QT Syndrome (LQTS).
  17. Participation in an investigational drug trial within the month prior to dosing in the present study.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Other
  • Allocation: Randomized
  • Interventional Model: Sequential Assignment
  • Masking: Triple

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Active Comparator: Active
Receive a single dose of ENT-03 sub-cutaneously
Drug: ENT-03
single dose of active drug
Placebo Comparator: Placebo
Receive a single dose of placebo sub-cutaneously
Drug: Placebo
single dose of placebo comparator

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Number of Participants With Treatment-Emergent Adverse Events (TEAEs)
Time Frame: From Day 1 (dosing visit) through Day 14 (End of Study visit), approximately 3 to 4 weeks
Treatment Emergent Adverse events (TEAEs) were collected from Day 1 (dosing visit ) through End of Study visit (Day 14 post-dose). TEAEs were defined as any AE with onset on or after the date of study drug administration. TEAEs were recorded by the investigator based on subject report, clinical observation, physical examination, vital signs, laboratory assessments, and ECG findings. Severity was graded per NCI CTCAE v5.0. Relatedness to study drug was assessed by the investigator. TEAEs of special interest included nausea, vomiting, and injection site reactions.
From Day 1 (dosing visit) through Day 14 (End of Study visit), approximately 3 to 4 weeks
Safety and Tolerability of ENT-03
Time Frame: Baseline (pre-dose Day 1), Day 4 (72 hours post-dose), and Day 8 (168 hours post-dose, End of Study)
QTcF (Fridericia-corrected QT interval) was assessed via 12-lead resting ECG at baseline (pre-dose Day 1) and at 72 hours post-dose (Day 4) and 168 hours post-dose (Day 8, End of Study).
Baseline (pre-dose Day 1), Day 4 (72 hours post-dose), and Day 8 (168 hours post-dose, End of Study)

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Pharmacokinetic Endpoints: Maximum Plasma Concentration
Time Frame: Pre-dose (0 hours) and at 0.5, 1, 1.5, 2, 4, 8, 12, 24, 48, 72, 96, 120, 144, and 168 hours post-dose. Note: Cohorts 1 and 2 had samples collected through 72 hours; Cohort 3 through 120 hours; Cohorts 4-7 through 168 hours.
maximum measured plasma concentration
Pre-dose (0 hours) and at 0.5, 1, 1.5, 2, 4, 8, 12, 24, 48, 72, 96, 120, 144, and 168 hours post-dose. Note: Cohorts 1 and 2 had samples collected through 72 hours; Cohort 3 through 120 hours; Cohorts 4-7 through 168 hours.
Area Under the Plasma Concentration-Time Curve From Time Zero to 24 Hours Post-Dose (AUC₀-₂₄)
Time Frame: 0, 0.5, 1, 1.5, 2, 4, 8, 12, and 24 hours post-dose (Cohorts 3-7); 0, 1, 2, 4, 8, 12, and 24 hours post-dose (Cohorts 1-2)
area under the concentration versus time curve over 24 hours
0, 0.5, 1, 1.5, 2, 4, 8, 12, and 24 hours post-dose (Cohorts 3-7); 0, 1, 2, 4, 8, 12, and 24 hours post-dose (Cohorts 1-2)
Pharmacokinetic Endpoint: Half-life
Time Frame: Sampling through 72 hours post-dose (Cohorts 1-2), 120 hours (Cohort 3), and 168 hours (Cohorts 4-7).
time required for drug concentration to decrease to 50% of maximum concentration
Sampling through 72 hours post-dose (Cohorts 1-2), 120 hours (Cohort 3), and 168 hours (Cohorts 4-7).
Change in Body Weight From Baseline to Day 8
Time Frame: Baseline (pre-dose Day 1) and Day 8 (168 hours post-dose, End of Study)
Body weight (kg) was measured at baseline (last measurement prior to first dose administration on Day 1) and at 168 hours post-dose (Day 8, End of Study). Change from baseline was calculated as the Day 8 value minus the baseline value.
Baseline (pre-dose Day 1) and Day 8 (168 hours post-dose, End of Study)
Pharmacodynamic Endpoint: Change in Fasting Leptin From Baseline to Day 8
Time Frame: Baseline (pre-dose Day 1) and Day 8 (168 hours post-dose, End of Study)
Fasting leptin (ng/mL) was measured at baseline (last measurement prior to first dose administration on Day 1) and at post-dose visits. For Cohorts 1-3, assessments were performed at 24 hours (Day 2), 48 hours (Day 3), 72 hours (Day 4), and 168 hours post-dose (Day 8, End of Study). For Cohorts 4-7, assessments were performed at 72 hours (Day 4) and 168 hours post-dose (Day 8, End of Study) only. Change from baseline was calculated as the visit value minus the baseline value.
Baseline (pre-dose Day 1) and Day 8 (168 hours post-dose, End of Study)
Pharmacodynamic Endpoint: Change in Fasting Plasma Glucose From Baseline to Day 8
Time Frame: Baseline (pre-dose Day 1) and Day 8 (168 hours post-dose, End of Study)
Fasting plasma glucose (mg/dL) was measured at baseline (last measurement prior to first dose administration on Day 1) and at post-dose visits. For Cohorts 1-3, assessments were performed at 24 hours (Day 2), 48 hours (Day 3), 72 hours (Day 4), and 168 hours post-dose (Day 8, End of Study). For Cohorts 4-7, assessments were performed at 72 hours (Day 4) and 168 hours post-dose (Day 8, End of Study) only. Change from baseline was calculated as the visit value minus the baseline value.
Baseline (pre-dose Day 1) and Day 8 (168 hours post-dose, End of Study)
Pharmacodynamic Endpoint: Change in Fasting Serum Insulin From Baseline to Day 8
Time Frame: Baseline (pre-dose Day 1) and Day 8 (168 hours post-dose, End of Study)
Fasting serum insulin (μIU/mL) was measured at baseline (last measurement prior to first dose administration on Day 1) and at post-dose visits. For Cohorts 1-3, assessments were performed at 24 hours (Day 2), 48 hours (Day 3), 72 hours (Day 4), and 168 hours post-dose (Day 8, End of Study). For Cohorts 4-7, assessments were performed at 72 hours (Day 4) and 168 hours post-dose (Day 8, End of Study) only. Change from baseline was calculated as the visit value minus the baseline value.
Baseline (pre-dose Day 1) and Day 8 (168 hours post-dose, End of Study)

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Metabolics Pharma

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Study Director: Richard Larson, MD, Enterin Inc.

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
June 13, 2023

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
August 12, 2024

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
August 12, 2024

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
June 5, 2023

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
June 22, 2023

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
June 29, 2023

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
June 1, 2026

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
May 29, 2026

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
May 1, 2026

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • ENT-03S-22-001

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

Yes

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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