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New weekly shot could help adults with growth hormone deficiency

NCT ID NCT07551804

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 27, 2026 · Last updated Jul 23, 2026 · Updated 2 times

Summary

This Phase 2a trial tests a new long-acting growth hormone injection called inpegsomatropin in 36 adults with growth hormone deficiency. Participants receive different doses or a placebo once a week to check safety and how well the drug works. The goal is to see if this weekly shot can improve body composition and quality of life.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
Inpegsomatropin (a long-acting growth hormone injection)
What this could lead to
If successful, this could provide a once-weekly treatment option for adults with growth hormone deficiency, potentially improving body composition and quality of life.
What could go wrong
This is an early Phase 2a trial with only 36 participants, so results may not apply to everyone. The drug may cause side effects or fail to show meaningful benefit over placebo.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Phase 2

Tests whether the treatment actually works, and watches for side effects, in a larger group.

Participants

About 36 people

The number the study aims to enrol. It can still change while the study runs.

Started

Jun 2026

Expected to finish

Jun 2028

An estimate. End dates often move.

Lead sponsor

A company

The lead sponsor is a pharmaceutical, biotech, or medical-device company.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

18 to 80 years

Sex

Male participants only

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Male study participants aged ≥ 18 years and \< 80 years at the time of signing the informed consent form (ICF); * Study participants meeting the criteria for adult growth hormone deficiency (AGHD): Patients with a peak GH level \< 5 μg/L measured by insulin tolerance test (ITT); OR Patients with an IGF-1 level below -2.0 SDS for age and sex at screening (see Appendix 4); * No systemic treatment with growth hormone or growth hormone secretagogues within 6 months prior to entering the screening period; * For patients with any other pituitary hormone deficiency who are on hormone replacement therapy (HRT) at screening, HRT must have been stable for at least 3 months; * Study participants must agree to use reliable contraceptive measures with their spouses from - Study participants fully understand the purpose, nature, methods and potential adverse reactions of the trial, voluntarily participate in the study, and have signed the informed consent form. Exclusion Criteria: * Individuals with known or suspected hypersensitivity to the investigational product or its excipients; * Patients with severe malnutrition as judged by the investigator, or with a BMI \< 18.5 kg/m² at screening; * Patients with active malignancy or a history of malignancy; or with thyroid nodules classified as TI-RADS grade ≥ 4a on thyroid ultrasound; or with high-risk or suspected malignant nodules detected on chest CT; or with clinically significant abnormal tumor markers at screening; * For patients with a history of pituitary adenoma or other benign intracranial tumors: 1. Surgical resection of pituitary adenoma or other benign intracranial tumors within 12 months prior to screening; 2. Evidence of growth of pituitary adenoma or other benign intracranial tumors within 12 months prior to screening (must be confirmed by two postoperative MRI scans, with the most recent MRI scan performed ≤ 6 months before the screening period); * Patients with abnormal liver or renal function at screening (ALT \> 3×ULN, Cr \> 1.5×ULN); * Patients testing positive for hepatitis B surface antigen (HBsAg), hepatitis C virus antibody (anti-HCV), or human immunodeficiency virus antibody (anti-HIV) at screening; * Patients with a clinically significant change in body weight within 6 months prior to screening as judged by the investigator, or with a self-reported body weight change of ≥ 10% compared to 6 months before screening; * Patients with unstable control of diabetes mellitus within 3 months prior to screening (HbA1c ≥ 7.5% at screening), or with significant adjustment of hypoglycemic medication dose or change in therapeutic drug type, or with severe diabetic complications as judged by the investigator; * Patients with cardiac insufficiency classified as NYHA class ≥ III; * Patients with a history of acromegaly or gigantism; * Patients with mental disability or language impairment that prevents full participation in the trial; * Individuals who have participated in any clinical trial of investigational medicinal products (as a trial participant) and received investigational intervention within 3 months prior to screening; * Other conditions deemed unsuitable for enrollment by the investigator.

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Conditions

The condition(s) this trial relates to.

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    6 sites. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Locations

  • Huashan Hospital, Fudan University

    RECRUITING

    Shanghai, China

  • Peking University First Hospital

    RECRUITING

    Beijing, China

  • The First Affiliated Hospital of Henan University of Science and Technology

    RECRUITING

    Henan, China

  • The First Affiliated Hospital of Xiamen University

    RECRUITING

    Xiamen, China

  • The Second Affiliated Hospital, Zhejiang University School of Medicine

    RECRUITING

    Zhejiang, China

  • West China Hospital, Sichuan University

    RECRUITING

    Sichuan, China

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