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Maridebart Cafraglutide Versus Placebo in Adult Participants With Obstructive Sleep Apnea on Positive Airway Pressure Therapy

A Phase 3 Randomized, Double-blind, Placebo-controlled Study to Evaluate the Efficacy, Safety, and Tolerability of Maridebart Cafraglutide in Adult Participants With Obstructive Sleep Apnea on Positive Airway Pressure Therapy and Living With Overweight or Obesity

Status
Recruiting
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07225686
Acronym
MARITIME-OSA-1
Enrollment
250
Registered
2025-11-10
Start date
2025-12-19
Completion date
2028-09-13
Last updated
2026-08-04

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Obesity, Obstructive Sleep Apnea

Keywords

MariTide, Maridebart Cafraglutide, AMG 133, Obesity

Brief summary

This Phase 3 clinical trial is designed to evaluate the efficacy and safety of maridebart cafraglutide compared to placebo over a 52-week period in adults with obstructive sleep apnea (OSA) who are receiving positive airway pressure (PAP) therapy and are living with overweight or obesity.

Interventions

Participants will receive maridebart cafraglutide as SC injections.

DRUGPlacebo

Participants will receive placebo SC.

Sponsors

Amgen
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
DOUBLE (Subject, Investigator)

Eligibility

Sex/Gender
ALL
Age
18 Years to 99 Years
Healthy volunteers
No

Inclusion criteria

* AHI ≥ 15 on polysomnography at day 1 before randomization. * BMI ≥ 27 kg/m\^2 at screening. * History of at least 1 unsuccessful attempt at weight loss by diet and exercise. * On positive airway pressure (PAP) therapy for at least 3 consecutive months before screening and plan to continue PAP therapy during the trial.

Exclusion criteria

* Had any previous or planned upper airway surgery or major ear, nose, or throat surgery for OSA. * Significant craniofacial abnormalities that may affect breathing at screening. * Diagnosis of Central or Mixed Sleep Apnea with proportion of mixed or central apneas/hypopneas ≥ 50%, and/or diagnosis of Cheyne Stokes Respiration. * Active device treatment of OSA other than PAP therapy (eg, oral appliances), or other treatments, that in the opinion of the investigator, may interfere with study outcomes. * Respiratory diseases such as obesity hypoventilation syndrome or daytime hypercapnia, or neuromuscular diseases such as myasthenia gravis or other conditions that could interfere with the results of the trial in the opinion of the investigator. * Have personal circumstances or job-related responsibilities that prevent a 7-day PAP withdrawal before polysomnography testing during the course of the trial.

Design outcomes

Primary

MeasureTime frame
Change in Apnea-Hypopnea Index (AHI) from baseline at week 52At week 52

Secondary

MeasureTime frame
Percentage Change in AHI from baseline at week 52At week 52
Participants Achieving ≥ 50% AHI Reduction from baseline at week 52At week 52
Participants Achieving AHI < 5 or AHI 5 to 14 with Epworth Sleepiness Scale (ESS) ≤ 10 from baseline at week 52At week 52
Percentage Change in Body Weight from baseline at week 52At week 52
Change in Sleep Apnea-specific Hypoxic Burden (SASHB) from baseline at week 52At week 52
Percentage change in High Sensitivity C-reactive Protein (hs-CRP) from baseline at week 52At week 52
Change in Systolic Blood Pressure from baseline at week 48At week 48
Change in Patient-Reported Outcomes Measurement Information System (PROMIS) Short Form v1.0 Sleep-related Impairment 8a Score from baseline at week 52At week 52
Change in AHI from baseline at week 24At week 24
Percentage change in AHI from baseline at week 24At week 24
Change in SASHB from baseline at week 24At week 24
Change in ESS score from baseline at week 52At week 52
Change in PROMIS Short Form v1.0 Sleep Disturbance 8b score from baseline at week 52At week 52
Change in Short Form-36 Health Survey Version 2 (SF-36v2) Acute domain and summary scores from baseline at week 52At week 52
Change from baseline at week 52 in Patient Global Impression of Severity (PGI-S) Sleep-related impairment, Sleep quality, and Sleepiness.At week 52
Percentage of participants achieving ≥ 10% reduction in body weight from baseline at week 52At week 52
Percentage of participants achieving ≥ 15% reduction in body weight from baseline at week 52At week 52
Percentage of participants achieving ≥ 20% reduction in body weight from baseline at week 52At week 52
Change in waist circumference from baseline at week 52At week 52
Change in waist-to-height ratio from baseline at week 52At week 52
Change in neck circumference from baseline at week 52At week 52
Percentage change in Total Cholesterol, High-density lipoprotein cholesterol (HDL-C), Non-HDL-C, Low-density lipoprotein cholesterol (LDL-C), and Triglycerides from baseline at week 52 in fasting conditionsAt week 52
Percent change from baseline at week 52 in fasting insulinAt week 52
Change from baseline at week 52 in fasting plasma glucose (FPG) (mg/dL, mmol/L)At week 52
Change in hemoglobin A1c (HbA1c) (%, mmol/mol) from baseline at week 52At week 52
Change in Diastolic Blood Pressure (DBP) from baseline at week 48At week 48
Number of participants with Treatment-Emergent Adverse Events and Serious Adverse EventsUp to 100 weeks
Plasma concentration of maridebart cafraglutide at week 52At week 52

Countries

Australia, Brazil, Canada, Czechia, France, Germany, Hungary, Japan, Poland, Spain, United States

Contacts

CONTACTAmgen Call Center
medinfo@amgen.com866-572-6436
STUDY_DIRECTORMD

Amgen

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Aug 5, 2026