A Multicenter, Randomized, Double-blind, Placebo-controlled Phase III Clinical Study to Evaluate the Efficacy and Safety of HRS9531 Injection in Subjects With Obstructive Sleep Apnea (OSA) and Obesity Who Are on Positive Airway Pressure Ventilation (PAP) Therapy

Fujian Shengdi Pharmaceutical

Status and phase: Enrolling; Phase 3

Conditions: Subjects With Moderate-to-severe OSA and Obesity Who Are on PAP Therapy

Treatments: Drug: HRS9531; Drug: Placebo

Study type: Interventional

Funder types: Industry

Identifiers

NCT06994650

HRS9531-307

Details and patient eligibility

About

This study is a phase 3 clinical trial, aiming to evaluate the efficacy and safety of HRS-9531 injection in obese subjects with obstructive sleep apnea (OSA) who are on positive airway pressure ventilation (PAP) therapy.

Enrollment: 140 estimated patients

Sex: All

Ages: 18 to 75 years old

Volunteers: No Healthy Volunteers

Inclusion criteria

1. Aged 18 -75 (inclusive), male or female Sex
2. BMI ≥28.0 kg/m2；
3. ≥3 months of diet/exercise control pre-screening with ≤5.0 kg weight fluctuation in prior 3 months.
4. Confirmed OSA diagnosis with screening PSG showing AHI ≥15.0 events/h.
5. ≥3 months of PAP therapy pre-screening with planned continuation; willingness to pause PAP ≥1 week before each PSG.
6. Females/males of childbearing potential must use highly effective contraception from consent until 2 months post-treatment, with no pregnancy/donation plans. Females require negative pregnancy test ≤3 days pre-randomization and non-lactating.

Exclusion criteria

1. Endocrine disorders significantly affecting weight (e.g., Cushing's syndrome, hypo-/hyperthyroidism) or monogenic/hereditary obesity syndromes excluded.
2. Diabetes mellitus (excluding gestational diabetes).
3. Prior/planned OSA-related major surgeries (e.g., tonsillectomy/adenoidectomy) that may affect breathing.
4. Have significant craniofacial abnormalities that may affect breathing at baseline
5. Have diagnosis of Central or Mixed Sleep Apnea with % of mixed or central apneas/hypopneas ≥50%, or diagnosis of Cheyne Stokes Respiration
6. Respiratory and neuromuscular diseases that could interfere with the results of the trial in the opinion of the investigator.
7. Impaired gastric emptying (e.g., gastric bypass, pyloric stenosis)；Chronic use of GI motility-affecting drugs；Severe GI disorders (e.g., active PUD, IBD)；GI surgeries (except non-motility-affecting procedures)
8. Pancreatic disorders (acute/chronic pancreatitis, pancreatic injury)；Acute cholecystitis history；Symptomatic/treated gallbladder disease
9. Have used drugs or treatments that may cause significant weight gain or loss within 3 months
10. Investigator-determined unsuitability/unwillingness to pause PAP therapy for at least 1 week pre-PSG (e.g., safety/occupational/personal considerations).

Trial design

Primary purpose: Treatment

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: Quadruple Blind

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140 participants in 2 patient groups, including a placebo group

HRS9531

Experimental group

Treatment:

Drug: HRS9531

Placebo

Placebo Comparator group

Treatment:

Drug: Placebo