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Maridebart Cafraglutide Versus Placebo in Adult Participants With Obstructive Sleep Apnea Not on Positive Airway Pressure (PAP) 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 Not on Positive Airway Pressure Therapy and Living With Overweight or Obesity (MARITIME-OSA-2)

Status
Recruiting
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07226765
Acronym
MARITIME-OSA-2
Enrollment
250
Registered
2025-11-10
Start date
2025-11-25
Completion date
2028-09-13
Last updated
2026-08-14

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

Conditions

Obstructive Sleep Apnea

Keywords

Obstructive sleep apnea, OSA, Overweight, Obesity, Maridebart Cafraglutide, AMG 133, MariTide

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 not on PAP therapy and are living with overweight or obesity.

Interventions

Participants will receive maridebart cafraglutide SC.

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

* Participants must have an AHI of 15 or higher on polysomnography (PSG) at Day 1 before randomization. * Body Mass Index (BMI) of 27 kg/m\^2 or more at the time of screening. * History of at least one unsuccessful attempt at weight loss through diet and exercise. * Participants must not have used PAP therapy for at least 4 weeks before screening, are unwilling/unable to use PAP, and do not plan to use PAP therapy during the study.

Exclusion criteria

* Individuals who have had any previous or planned upper airway surgery or major ear, nose or throat surgery for OSA. * Those with significant craniofacial abnormalities that may affect breathing at screening. * Participants diagnosed with 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 or other treatments, that in the opinion of the investigator, may interfere with study outcomes. * Individuals with respiratory diseases like obesity hypoventilation syndrome or daytime hypercapnia, neuromuscular diseases or other conditions that could interfere with the trial results, according to the investigator's opinion.

Design outcomes

Primary

MeasureTime frame
Change in Apnea-hypopnea Index (AHI) from baseline at Week 52At Week 52

Secondary

MeasureTime frame
Change in AHI from Baseline at Week 24At Week 24
Percent 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-related Impairment 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 in Patient Global Impression of Severity (PGI-S) Sleep-Related Impairment, Sleep Quality, Sleepiness from Baseline at Week 52At 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 in Fasting Insulin From Baseline at Week 52At Week 52
Change in Fasting Plasma Glucose (FPG) (mg/dL, mmol/L) From Baseline at Week 52At Week 52
Change in Hemoglobin A1c 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 Week 100
Plasma Concentration of Maridebart Cafraglutide at Week 52At Week 52
Change in Systolic Blood Pressure (SBP) from baseline at Week 48At Week 48
Percent 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
Percent 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
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
Percent Change in High Sensitivity C-reactive Protein (hs-CRP) from baseline 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 15, 2026