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ObesityPhase 1NCT05925920

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

A Phase 1 study testing ENT-03 in people with Obesity and Diabetes Mellitus, Type 2, run by Metabolics Pharma at 1 site in United States.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

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. Read more about this study

Who is it for?
Ages 18 to 70 yearsHealthy volunteers can take part
Conditions the study is for
Obesity, Diabetes Mellitus, Type 2
What is being tested?
ENT-03
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
49 participants
Where
1 siteUnited States
Study dates
13 Jun 2023to 12 Aug 2024
Phase
Phase 1
Are there results?
Yes, posted in the registrySummary in the doctors' view

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 to 70 years
  • All sexes
  • Healthy volunteers accepted
  • Adult, Older adult

Who may be able to join

  • Subjects aged 18-70 years, both genders.
  • Healthy as determined by a physician, based on history, medical examination, vital signs, and laboratory tests.
  • Males that agree to use condoms for the duration of participation in the study.
  • Females of non-child-bearing potential (i.e., tubal ligation, hysterectomy, or postmenopausal).
  • Female patients of child-bearing potential with negative serum pregnancy tests and who agree to use double-barrier contraception during the study.
  • 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.
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  • Subjects must have a BMI 30-35 kg/m2 inclusive assessed immediately prior to screening.
  • Fasting insulin level ≥11 mIU/L.
  • HbA1c < 8.5% (diabetic subjects only).
  • Subjects with Type 2 diabetes on no anti-diabetic medication or on stable doses of metformin for 4 weeks or more (diabetic cohorts only).
  • 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).

Who cannot join

  • 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.
  • Pregnant or breastfeeding within six months of screening assessment.
  • Substantial changes in eating habits or exercise routine within the preceding three months.
  • Evidence of eating disorders.
  • >5% weight change in the past three months.
  • Bariatric surgery within the past five years.
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  • Significant renal impairment (eGFR <60 mg/mL/1.73m2).
  • Patients on anti-diabetic medications other than metformin.
  • Patients with gastroparesis.
  • Liver function tests (i.e., ALT, AST, alkaline phosphatase) greater than twice the upper limit of normal upon repeated measurements.
  • Diseases interfering with metabolism and/or ingestive behavior (e.g., myxedema, Cushing's disease, schizophrenia, major psychoses).
  • 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.
  • Score of >15 on the Columbia Suicide Severity Rating Scale (C-SSRS).
  • 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
  • Any clinically significant abnormality following the Investigator's review of the physical examination and clinical laboratory tests.
  • 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).
  • Participation in an investigational drug trial within the month prior to dosing in the present study.

Trial locations and contacts

1 site in 1 country.

United States1 site
  • ProSciento

    San Diego, California, 91911

Other trials in United States

About this study

Official title: 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.

Being tested
ENT-03, Placebo
Medical subject headings
Obesity, Diabetes Mellitus, Type 2

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • ENT-03Drug

    single dose of active drug

  • PlaceboDrug

    single dose of placebo comparator

Study groups in NCT05925920
Study groupRoleWhat they receive
ActiveActive comparatorReceive a single dose of ENT-03 sub-cutaneously
Receives: Drug: ENT-03
PlaceboPlacebo comparatorReceive a single dose of placebo sub-cutaneously
Receives: Drug: Placebo

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Number of Participants With Treatment-Emergent Adverse Events (TEAEs)

    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.

    Measured: From Day 1 (dosing visit) through Day 14 (End of Study visit), approximately 3 to 4 weeks

  2. Safety and Tolerability of ENT-03

    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).

    Measured: Baseline (pre-dose Day 1), Day 4 (72 hours post-dose), and Day 8 (168 hours post-dose, End of Study)

Secondary outcomes (7)
  1. Pharmacokinetic Endpoints: Maximum Plasma Concentration

    maximum measured plasma concentration

    Measured: 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.

  2. Area Under the Plasma Concentration-Time Curve From Time Zero to 24 Hours Post-Dose (AUC₀-₂₄)

    area under the concentration versus time curve over 24 hours

    Measured: 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)

  3. Pharmacokinetic Endpoint: Half-life

    time required for drug concentration to decrease to 50% of maximum concentration

    Measured: Sampling through 72 hours post-dose (Cohorts 1-2), 120 hours (Cohort 3), and 168 hours (Cohorts 4-7).

  4. Change in Body Weight From Baseline to Day 8

    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.

    Measured: Baseline (pre-dose Day 1) and Day 8 (168 hours post-dose, End of Study)

  5. Pharmacodynamic Endpoint: Change in Fasting Leptin From Baseline to Day 8

    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.

    Measured: Baseline (pre-dose Day 1) and Day 8 (168 hours post-dose, End of Study)

  6. Pharmacodynamic Endpoint: Change in Fasting Plasma Glucose From Baseline to Day 8

    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.

    Measured: Baseline (pre-dose Day 1) and Day 8 (168 hours post-dose, End of Study)

  7. Pharmacodynamic Endpoint: Change in Fasting Serum Insulin From Baseline to Day 8

    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.

    Measured: Baseline (pre-dose Day 1) and Day 8 (168 hours post-dose, End of Study)

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted29 Jun 2023
  2. Study start13 Jun 2023
  3. Primary completion12 Aug 2024
  4. Study completion12 Aug 2024

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 1
Primary purpose
Other
Allocation
Randomised
Intervention model
Sequential
Masking
Triple blind
Who is masked
Participant, Care provider, Investigator
Enrolment
49 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT05925920
Sponsor's protocol ID
ENT-03S-22-001
Status last verified
May 2026
First submitted
5 Jun 2023
Last updated
1 Jun 2026
FDA-regulated drug
Yes
FDA-regulated device
No
Individual data sharing
No

Questions about this trial

What is this clinical trial studying?

A Phase 1 study testing ENT-03 in people with Obesity and Diabetes Mellitus, Type 2, run by Metabolics Pharma at 1 site in United States.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 11 inclusion and 24 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 1 Jun 2026. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. Some participants in this study may receive a placebo. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 1 studies test a treatment in a small group of people for the first time or in a new way, mainly to check safety and find the right dose.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

Yes. Results are posted in the registry (first posted 1 Jun 2026). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

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). The study lists 2 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 1 Jun 2026.

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