A Phase III, Multicenter, Randomized, Double-Blind, Placebo-Controlled Clinical Study to Evaluate the Efficacy and Safety of HDM1005 Injection in Subjects With Obstructive Sleep Apnea (OSA) and Obesity Not Receiving Positive Airway Pressure (PAP) Therapy

August 24, 2026 updated by: Hangzhou Zhongmei Huadong Pharmaceutical Co., Ltd.
This is a 56-week randomized, double blinded, parallel-controlled study evaluating the efficacy and safety of the HDM1005 in patients with obstructive sleep apnea (OSA) and obesity not receiving positive airway pressure (PAP) therapy. Eligible participants will be screened and randomized to the HDM1005 group or the placebo group at a ratio of 1:1 , HDM1005 or placebo will be given once weekly for 52 weeks, following by a safety follow up of 4 weeks. All participants received a lifestyle intervention that involved counselling on diet and physical activity.

Study Overview

Status

Not yet recruiting

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Estimated)

200

Phase

  • Phase 3

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 Locations

  • China
      • Beijing, China
        • Peking University People's Hospital
        • Contact:

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

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • Age between 18 and 75 years, male or female, at the time of signing the informed consent form.
  • BMI ≥ 28.0 kg/m² at both screening and randomization.
  • A self-reported change in body weight no more than 5% within 90 days before screening.
  • Subject has been diagnosed with obstructive sleep apnea (OSA) according to the International Classification of Sleep Disorders, 3rd Edition (ICSD-3) criteria prior to screening, and has a centrally assessed apnea-hypopnea index (AHI) ≥15 events/hour on polysomnography (PSG) at screening.
  • Unable or unwilling to receive PAP therapy before screening, and not planning to initiate PAP therapy during the study period.

Exclusion Criteria:

  • History of any type of diabetes mellitus (history of gestational diabetes is permitted).
  • Have obesity induced by other endocrinologic disorders or by other medicine.
  • History of thyroid C-cell carcinoma, multiple endocrine neoplasia type 2 (MEN2) or relevant family history.
  • Diagnosis of central or mixed sleep apnea or Cheyne-Stokes respiration.
  • Respiratory or neuromuscular diseases judged by the investigator to potentially interfere with trial results.
  • Clinical abnormalities or diseases related to insomnia or excessive sleepiness (excluding OSA).
  • Uncontrolled hypertension prior to screening, defined as: systolic blood pressure ≥ 160 mmHg and/or diastolic blood pressure ≥ 100 mmHg (stable for 1 month if using antihypertensive drugs).
  • History of malignancy (except cured basal cell carcinoma) in the past 5 years or at the time of screening.
  • History of severe cardiovascular or cerebrovascular diseases within the past six months.
  • The subject has any other factors that may affect the efficacy or safety evaluation of this study, and is not suitable for participation in this study in the opinion of the investigator.

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: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Quadruple

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Placebo Comparator: Placebo
Drug: Placebo
Initiate at a once weekly dose of 0.5 mg and followed a dose escalation regimen, with dose increases every 4 weeks aiming at reaching the maintenance dose. The intervention will last for 52 weeks in total.
Experimental: HDM1005
Drug: HDM1005
Initiate at a once weekly dose of 0.5 mg and followed a dose escalation regimen, with dose increases every 4 weeks aiming at reaching the maintenance dose, the intervention will last for 52 weeks in total.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
Percentage change in body weight from baseline at week 52
Time Frame: 52 week
52 week
Change in AHI from baseline at week 52
Time Frame: 52 week
52 week

Secondary Outcome Measures

Outcome Measure
Time Frame
Percentage change in AHI from baseline
Time Frame: 52 week
52 week
Proportion of participants with ≥50% reduction in AHI from baseline
Time Frame: 52 week
52 week
Proportion of participants achieving the following criteria：AHI < 5; or 5 ≤ AHI ≤ 14 and Epworth Sleepiness Scale (ESS) score ≤ 10
Time Frame: 52 week
52 week
Proportion of subjects whose body weight decreased by ≥ 5%, ≥ 10%, or ≥ 15% relative to baseline
Time Frame: 52 week
52 week
Change in Epworth Sleepiness Scale (ESS) Score from Baseline at Week 52 of Treatment
Time Frame: 52 week
52 week
Proportion of subjects reporting improvement in Patient Global Impression of Severity (PGIS)-OSA categories at Week 52 of treatment.
Time Frame: 52 week
52 week
Incidence of adverse events (AEs)
Time Frame: 52 week
52 week

Collaborators and Investigators

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

Sponsor

Hangzhou Zhongmei Huadong Pharmaceutical Co., Ltd.

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 (Estimated)

August 1, 2026

Primary Completion (Estimated)

March 1, 2028

Study Completion (Estimated)

June 1, 2028

Study Registration Dates

First Submitted

August 24, 2026

First Submitted That Met QC Criteria

August 24, 2026

First Posted (Actual)

August 26, 2026

Study Record Updates

Last Update Posted (Actual)

August 26, 2026

Last Update Submitted That Met QC Criteria

August 24, 2026

Last Verified

August 1, 2026

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • HDM1005-304

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

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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