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Obstructive Sleep Apnea Master Protocol GPIF: A Study of Tirzepatide (LY3298176) in Participants With Obstructive Sleep Apnea

A Master Protocol to Investigate the Efficacy and Safety of Tirzepatide Once Weekly in Participants Who Have Obstructive Sleep Apnea and Obesity: A Randomized, Double-Blind, Placebo-Controlled Trial

Status
Completed
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05412004
Acronym
SURMOUNT-OSA
Enrollment
469
Registered
2022-06-09
Start date
2022-06-21
Completion date
2024-03-29
Last updated
2025-04-30

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

Conditions

Obesity, Obstructive Sleep Apnea

Brief summary

The purpose of this study is to evaluate the effect and safety of tirzepatide in participants with moderate to severe obstructive sleep apnea and obesity who are both unwilling or unable to use Positive Airway Pressure (PAP) therapy in GPI1 and those who are and plan to stay on PAP therapy in GPI2.

Interventions

DRUGTirzepatide

Administered SC

DRUGPlacebo

Administered SC

Sponsors

Eli Lilly and Company
Lead SponsorINDUSTRY

Study design

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

Eligibility

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

Inclusion criteria

For GPI1 Participants: \- Participants who are unable or unwilling to use PAP therapy. Participants must not have used PAP for at least 4 weeks prior to screening. For GPI2 Participants: \- Have been on PAP therapy for at least 3 consecutive months prior to screening and plan to continue PAP therapy during the study For Both GPI1 and GPI2 Participants: * Have an AHI ≥15 on PSG as part of the trial at screening * Have a body mass index (BMI) ≥30 kilogram/square meter (kg/m²) * Have a history of at least 1 self-reported unsuccessful dietary effort to lose body weight

Exclusion criteria

For GPI2 Participants: * Have personal or job-related responsibilities, or in the opinion of the investigator have any situation, that would make it unsafe to stop PAP therapy for 7 days prior to PSG testing during the course of the study * Are unwilling to stop PAP therapy for 7 days prior to polysomnography (PSG) testing during the course of the study For GPI1 and GPI2 Participants: * Female participants must not be pregnant, intending to be pregnant, breastfeeding, or intending to breastfeed. * Have type 1 diabetes mellitus (T1DM) or type 2 diabetes mellitus (T2DM), history of ketoacidosis, or hyperosmolar state/coma. * Have HbA1c ≥ 6.5% (≥ 48 mmol/mol) at baseline * Any previous or planned surgery for sleep apnea or major ear, nose or throat surgery, including tonsillectomy and adenoidectomy that still may affect breathing at time of baseline * Have significant craniofacial abnormalities that may affect breathing at baseline * Have diagnosis of Central or Mixed Sleep Apnea with % of mixed or central apneas/hypopneas ≥50%, or diagnosis of Cheyne Stokes Respiration * Diagnosis of Obesity Hypoventilation Syndrome or daytime hypercapnia. * Active device treatment of OSA other than PAP therapy (for example, dental appliance), or other treatment, that in the opinion of the investigator, may interfere with study outcomes, unless willing to stop treatment at baseline and throughout the study. * Respiratory and neuromuscular diseases that could interfere with the results of the trial in the opinion of the investigator. * Have a self-reported change in body weight \>5 kg within 3 months prior to screening * Have a prior or planned surgical treatment for obesity (excluding liposuction or abdominoplasty if performed more than 1 year prior to screening) * Have or plan to have endoscopic and/or device-based therapy for obesity or have had device removal within the last 6 months (for example, mucosal ablation, gastric artery embolization, intragastric balloon, and duodenal-jejunal bypass sleeve)

Design outcomes

Primary

MeasureTime frameDescription
Change From Baseline in Apnea-Hypopnea Index (AHI)Baseline, Week 52AHI, Apnea-Hypopnea Index, is the number of apneas or hypopneas recorded via polysomnography during the study per hour of sleep. Apnea is defined as a cessation of airflow lasting at least 10 seconds, hypopnea as a decrease in airflow by at least 30% from baseline for at least 10 seconds occurring with a drop in oxygen saturation (SpO₂) by at least 4%. AHI values are categorized as 5-15 events/hr = mild; 15-\<30 events/hr = moderate; and ≥ 30 events/hr = severe. a significant reduction in values indicates a positive outcome.

Secondary

MeasureTime frameDescription
Percent Change From Baseline in Apnea-Hypopnea Index (AHI)Baseline, Week 52Percent Change From Baseline in AHI was evaluated.
Percentage of Participants With ≥50% AHI Reduction From BaselineWeek 52Percentage of participants achieving ≥50% AHI reduction from baseline to Week 52 was evaluated.
Percentage of Participants With AHI <5 or With AHI 5-14 With Epworth Sleepiness Scale (ESS) ≤10Week 52The percentage of participants with OSA remission (AHI \<5 events per hour of sleep) or with mild OSA without excessive daytime sleepiness (AHI 5-14 events per hour of sleep with ESS ≤10) at Week 52 was evaluated. The ESS is used to assess improvements in excessive daytime sleepiness from baseline to Week 52. The ESS is an 8-item, participant-completed measure that asks the participant to rate, on a scale of 0 (no chance of dozing) to 3 (high chance of dozing), their usual chances of dozing in 8 different daytime situations, with a recall period of in recent times. The ESS total score is the sum of the 8-item scores and ranges from 0 to 24, with higher scores indicating greater daytime sleepiness.
Change From Baseline in Systolic Blood Pressure (SBP)Baseline, Week 48Change in systolic blood pressure from baseline to Week 48 was evaluated.
Change From Baseline in Patient-Reported Outcomes Measurement Information System (PROMIS) Short Form Sleep-Related Impairment 8a (PROMIS SRI) and PROMIS Short Form Sleep Disturbance 8b (PROMIS SD)Baseline, Week 52PROMIS SRI consists of 8 items that assess self-reported perceptions of alertness, sleepiness, and tiredness during usual waking hours and perceived functional impairments associated with sleep problems. PROMIS SRI has a recall period of in the past 7 days and each item is rated on a 5-point scale from not at all to very much. PROMIS SD consists of 8 items that assess self-reported perceptions of sleep quality, sleep depth, and restoration associated with sleep. PROMIS SD has a recall period of in the past 7 days and each item is rated on a 5-point scale ranging from not at all to very much, never to always, or very poor to very good. For both PROMIS SRI and PROMIS SD, item responses are used to generate T-scores which are standardized scores with a mean of 50 and a standard deviation of 10 (score range cannot be specified for T-scores). Higher T-scores indicate worse outcomes; more sleep-related impairment (PROMIS SRI) or more sleep disturbance (PROMIS SD).
Percent Change From Baseline in Body WeightBaseline, Week 52Percent Change from Baseline in Body Weight was evaluated.
Change From Baseline in High Sensitivity C Reactive Protein (hsCRP) ConcentrationBaseline, Week 52HsCRP is a marker for inflammation and was measured from blood samples to identify the presence of inflammation, to determine its severity, and to monitor response to treatment.
Change From Baseline in Sleep Apnea-Specific Hypoxic Burden (SASHB) (% Min/Hour)Baseline, Week 52SASHB was determined by measuring the respiratory event-associated area under the curve for oxygen desaturation from pre-event baseline and represents the cumulative burden of intermittent hypoxia caused by OSA-related sleep-disordered breathing at sleep.

Countries

Australia, Brazil, China, Czechia, Germany, Japan, Mexico, Puerto Rico, Taiwan, United States

Participant flow

Recruitment details

NCT05412004 supports two pivotal studies: I8F-MC-GPI1 (GPI1; Study 1) and I8F-MC-GPI2 (GPI2; Study 2), conducted under the single master protocol I8F-MC-GPIF. The studies were conducted under a single overarching trial structure for operational efficiencies, but the study participants for both studies are different (GPI1 included participants who were unable or unwilling to use positive airway pressure (PAP) therapy, while GPI2 included those on PAP therapy).

Participants by arm

ArmCount
Tirzepatide MTD_GPI1
Participants not on positive airway pressure (PAP) therapy received a maximum tolerated dose (MTD) of 10 milligrams (mg) or 15 mg of Tirzepatide once weekly (QW) as a subcutaneous (SC) injection for 52 weeks, including the initial dose escalation by 2.5 mg every 4 weeks.
114
Placebo_GPI1
Participants not on PAP therapy received placebo QW as an SC injection for 52 weeks.
120
Tirzepatide MTD_GPI2
Participants who are on PAP therapy received an MTD of 10 mg or 15 mg of Tirzepatide QW as an SC injection for 52 weeks, including the initial dose escalation by 2.5 mg every 4 weeks.
120
Placebo_GPI2
Participants who are on PAP therapy received placebo QW as an SC injection for 52 weeks.
115
Total469

Withdrawals & dropouts

PeriodReasonFG000FG001FG002FG003
Overall StudyAdverse Event0215
Overall StudyAssigned Treatment by Mistake51025
Overall StudyLost to Follow-up3000
Overall StudyPatient could not travel to site0100
Overall StudyPhysician Decision0100
Overall StudyPregnancy0100
Overall StudyProtocol Violation1000
Overall StudyScreen Failure0001
Overall StudyThe participant quit treatment and study due to their schedule and the final V801 was done remotely0001
Overall StudyWithdrawal by Subject419414

Baseline characteristics

CharacteristicTotalTirzepatide MTD_GPI1Placebo_GPI1Tirzepatide MTD_GPI2Placebo_GPI2
Age, Customized
<50years
224 Participants63 Participants62 Participants54 Participants45 Participants
Age, Customized
>=50years
245 Participants51 Participants58 Participants66 Participants70 Participants
Baseline apnea-hypopnea index (AHI)50.49 events per hour
STANDARD_DEVIATION 28.98
52.86 events per hour
STANDARD_DEVIATION 30.5
50.13 events per hour
STANDARD_DEVIATION 31.47
46.08 events per hour
STANDARD_DEVIATION 22.35
53.10 events per hour
STANDARD_DEVIATION 30.23
Ethnicity (NIH/OMB)
Hispanic or Latino
174 Participants51 Participants47 Participants38 Participants38 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
290 Participants63 Participants69 Participants82 Participants76 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
5 Participants0 Participants4 Participants0 Participants1 Participants
Race (NIH/OMB)
American Indian or Alaska Native
37 Participants9 Participants9 Participants10 Participants9 Participants
Race (NIH/OMB)
Asian
80 Participants23 Participants24 Participants17 Participants16 Participants
Race (NIH/OMB)
Black or African American
24 Participants6 Participants7 Participants8 Participants3 Participants
Race (NIH/OMB)
More than one race
2 Participants2 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Unknown or Not Reported
1 Participants0 Participants0 Participants0 Participants1 Participants
Race (NIH/OMB)
White
325 Participants74 Participants80 Participants85 Participants86 Participants
Region of Enrollment
Australia
25 Participants1 Participants5 Participants10 Participants9 Participants
Region of Enrollment
Brazil
84 Participants24 Participants25 Participants18 Participants17 Participants
Region of Enrollment
China
37 Participants14 Participants14 Participants4 Participants5 Participants
Region of Enrollment
Czechia
23 Participants5 Participants6 Participants6 Participants6 Participants
Region of Enrollment
Germany
46 Participants7 Participants7 Participants16 Participants16 Participants
Region of Enrollment
Japan
20 Participants3 Participants4 Participants7 Participants6 Participants
Region of Enrollment
Mexico
69 Participants20 Participants19 Participants14 Participants16 Participants
Region of Enrollment
Taiwan
16 Participants5 Participants4 Participants4 Participants3 Participants
Region of Enrollment
United States
149 Participants35 Participants36 Participants41 Participants37 Participants
Sex: Female, Male
Female
142 Participants36 Participants41 Participants33 Participants32 Participants
Sex: Female, Male
Male
327 Participants78 Participants79 Participants87 Participants83 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
EG003
affected / at risk
deaths
Total, all-cause mortality
0 / 1140 / 1200 / 1190 / 114
other
Total, other adverse events
91 / 11491 / 12098 / 11982 / 114
serious
Total, serious adverse events
9 / 1147 / 1207 / 11912 / 114

Outcome results

Primary

Change From Baseline in Apnea-Hypopnea Index (AHI)

AHI, Apnea-Hypopnea Index, is the number of apneas or hypopneas recorded via polysomnography during the study per hour of sleep. Apnea is defined as a cessation of airflow lasting at least 10 seconds, hypopnea as a decrease in airflow by at least 30% from baseline for at least 10 seconds occurring with a drop in oxygen saturation (SpO₂) by at least 4%. AHI values are categorized as 5-15 events/hr = mild; 15-\<30 events/hr = moderate; and ≥ 30 events/hr = severe. a significant reduction in values indicates a positive outcome.

Time frame: Baseline, Week 52

Population: Modified intent-to-treat (mITT) population consisting of all randomized participants who are exposed to at least 1 dose of study intervention and have evaluable data for this outcome.

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
Tirzepatide MTD_GPI1Change From Baseline in Apnea-Hypopnea Index (AHI)-25.25 events per hourStandard Error 2.06
Placebo_GPI1Change From Baseline in Apnea-Hypopnea Index (AHI)-5.25 events per hourStandard Error 2.11
Tirzepatide MTD_GPI2Change From Baseline in Apnea-Hypopnea Index (AHI)-29.27 events per hourStandard Error 1.99
Placebo_GPI2Change From Baseline in Apnea-Hypopnea Index (AHI)-5.51 events per hourStandard Error 2.21
p-value: <0.00195% CI: [-25.82, -14.2]ANCOVA
p-value: <0.00195% CI: [-29.61, -17.93]ANCOVA
Secondary

Change From Baseline in High Sensitivity C Reactive Protein (hsCRP) Concentration

HsCRP is a marker for inflammation and was measured from blood samples to identify the presence of inflammation, to determine its severity, and to monitor response to treatment.

Time frame: Baseline, Week 52

Population: mITT population consisting of all randomized participants who are exposed to at least 1 dose of study intervention and have evaluable data for this outcome.

ArmMeasureValue (GEOMETRIC_LEAST_SQUARES_MEAN)Dispersion
Tirzepatide MTD_GPI1Change From Baseline in High Sensitivity C Reactive Protein (hsCRP) Concentration-1.42 Milligram per liter (mg/L)Standard Error 0.151
Placebo_GPI1Change From Baseline in High Sensitivity C Reactive Protein (hsCRP) Concentration-0.70 Milligram per liter (mg/L)Standard Error 0.203
Tirzepatide MTD_GPI2Change From Baseline in High Sensitivity C Reactive Protein (hsCRP) Concentration-1.37 Milligram per liter (mg/L)Standard Error 0.13
Placebo_GPI2Change From Baseline in High Sensitivity C Reactive Protein (hsCRP) Concentration-0.33 Milligram per liter (mg/L)Standard Error 0.236
p-value: 0.75295% CI: [-1.21, -0.22]ANCOVA
p-value: 0.3595% CI: [-1.57, -0.51]ANCOVA
Secondary

Change From Baseline in Patient-Reported Outcomes Measurement Information System (PROMIS) Short Form Sleep-Related Impairment 8a (PROMIS SRI) and PROMIS Short Form Sleep Disturbance 8b (PROMIS SD)

PROMIS SRI consists of 8 items that assess self-reported perceptions of alertness, sleepiness, and tiredness during usual waking hours and perceived functional impairments associated with sleep problems. PROMIS SRI has a recall period of in the past 7 days and each item is rated on a 5-point scale from not at all to very much. PROMIS SD consists of 8 items that assess self-reported perceptions of sleep quality, sleep depth, and restoration associated with sleep. PROMIS SD has a recall period of in the past 7 days and each item is rated on a 5-point scale ranging from not at all to very much, never to always, or very poor to very good. For both PROMIS SRI and PROMIS SD, item responses are used to generate T-scores which are standardized scores with a mean of 50 and a standard deviation of 10 (score range cannot be specified for T-scores). Higher T-scores indicate worse outcomes; more sleep-related impairment (PROMIS SRI) or more sleep disturbance (PROMIS SD).

Time frame: Baseline, Week 52

Population: mITT population consisting of all randomized participants who are exposed to at least 1 dose of study intervention and have evaluable data for this outcome.

ArmMeasureGroupValue (LEAST_SQUARES_MEAN)Dispersion
Tirzepatide MTD_GPI1Change From Baseline in Patient-Reported Outcomes Measurement Information System (PROMIS) Short Form Sleep-Related Impairment 8a (PROMIS SRI) and PROMIS Short Form Sleep Disturbance 8b (PROMIS SD)Sleep Disturbance-4.47 T scoreStandard Error 0.69
Tirzepatide MTD_GPI1Change From Baseline in Patient-Reported Outcomes Measurement Information System (PROMIS) Short Form Sleep-Related Impairment 8a (PROMIS SRI) and PROMIS Short Form Sleep Disturbance 8b (PROMIS SD)Sleep-Related Impairment-6.57 T scoreStandard Error 0.83
Placebo_GPI1Change From Baseline in Patient-Reported Outcomes Measurement Information System (PROMIS) Short Form Sleep-Related Impairment 8a (PROMIS SRI) and PROMIS Short Form Sleep Disturbance 8b (PROMIS SD)Sleep-Related Impairment-3.13 T scoreStandard Error 0.8
Placebo_GPI1Change From Baseline in Patient-Reported Outcomes Measurement Information System (PROMIS) Short Form Sleep-Related Impairment 8a (PROMIS SRI) and PROMIS Short Form Sleep Disturbance 8b (PROMIS SD)Sleep Disturbance-2.44 T scoreStandard Error 0.7
Tirzepatide MTD_GPI2Change From Baseline in Patient-Reported Outcomes Measurement Information System (PROMIS) Short Form Sleep-Related Impairment 8a (PROMIS SRI) and PROMIS Short Form Sleep Disturbance 8b (PROMIS SD)Sleep Disturbance-6.98 T scoreStandard Error 0.82
Tirzepatide MTD_GPI2Change From Baseline in Patient-Reported Outcomes Measurement Information System (PROMIS) Short Form Sleep-Related Impairment 8a (PROMIS SRI) and PROMIS Short Form Sleep Disturbance 8b (PROMIS SD)Sleep-Related Impairment-8.18 T scoreStandard Error 0.95
Placebo_GPI2Change From Baseline in Patient-Reported Outcomes Measurement Information System (PROMIS) Short Form Sleep-Related Impairment 8a (PROMIS SRI) and PROMIS Short Form Sleep Disturbance 8b (PROMIS SD)Sleep Disturbance-3.08 T scoreStandard Error 0.88
Placebo_GPI2Change From Baseline in Patient-Reported Outcomes Measurement Information System (PROMIS) Short Form Sleep-Related Impairment 8a (PROMIS SRI) and PROMIS Short Form Sleep Disturbance 8b (PROMIS SD)Sleep-Related Impairment-3.91 T scoreStandard Error 1.03
Comparison: Sleep Disturbancep-value: 0.03795% CI: [-3.95, -0.12]ANCOVA
Comparison: Sleep Related Impairmentp-value: 0.00395% CI: [-5.69, -1.17]ANCOVA
Comparison: Sleep Disturbancep-value: <0.00195% CI: [-6.21, -1.58]ANCOVA
Comparison: Sleep-Related Impairmentp-value: 0.00295% CI: [-6.97, -1.56]ANCOVA
Secondary

Change From Baseline in Sleep Apnea-Specific Hypoxic Burden (SASHB) (% Min/Hour)

SASHB was determined by measuring the respiratory event-associated area under the curve for oxygen desaturation from pre-event baseline and represents the cumulative burden of intermittent hypoxia caused by OSA-related sleep-disordered breathing at sleep.

Time frame: Baseline, Week 52

Population: mITT population consisting of all randomized participants who are exposed to at least 1 dose of study intervention and have evaluable data for this outcome.

ArmMeasureValue (GEOMETRIC_LEAST_SQUARES_MEAN)Dispersion
Tirzepatide MTD_GPI1Change From Baseline in Sleep Apnea-Specific Hypoxic Burden (SASHB) (% Min/Hour)-95.19 %.min/hrStandard Error 4.081
Placebo_GPI1Change From Baseline in Sleep Apnea-Specific Hypoxic Burden (SASHB) (% Min/Hour)-25.07 %.min/hrStandard Error 9.804
Tirzepatide MTD_GPI2Change From Baseline in Sleep Apnea-Specific Hypoxic Burden (SASHB) (% Min/Hour)-102.98 %.min/hrStandard Error 3.758
Placebo_GPI2Change From Baseline in Sleep Apnea-Specific Hypoxic Burden (SASHB) (% Min/Hour)-41.69 %.min/hrStandard Error 11.313
95% CI: [-90.94, -49.31]
95% CI: [-84.66, -37.93]
Secondary

Change From Baseline in Systolic Blood Pressure (SBP)

Change in systolic blood pressure from baseline to Week 48 was evaluated.

Time frame: Baseline, Week 48

Population: mITT population consisting of all randomized participants who are exposed to at least 1 dose of study intervention and have evaluable data for this outcome.

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
Tirzepatide MTD_GPI1Change From Baseline in Systolic Blood Pressure (SBP)-9.46 Millimeters of mercury (mm Hg)Standard Error 1.02
Placebo_GPI1Change From Baseline in Systolic Blood Pressure (SBP)-1.84 Millimeters of mercury (mm Hg)Standard Error 1.03
Tirzepatide MTD_GPI2Change From Baseline in Systolic Blood Pressure (SBP)-7.64 Millimeters of mercury (mm Hg)Standard Error 1.03
Placebo_GPI2Change From Baseline in Systolic Blood Pressure (SBP)-3.94 Millimeters of mercury (mm Hg)Standard Error 1.18
p-value: <0.00195% CI: [-10.48, -4.77]ANCOVA
p-value: 0.01795% CI: [-6.75, -0.65]ANCOVA
Secondary

Percentage of Participants With ≥50% AHI Reduction From Baseline

Percentage of participants achieving ≥50% AHI reduction from baseline to Week 52 was evaluated.

Time frame: Week 52

Population: mITT population consisting of all randomized participants who are exposed to at least 1 dose of study intervention and have evaluable data for this outcome.

ArmMeasureValue (NUMBER)
Tirzepatide MTD_GPI1Percentage of Participants With ≥50% AHI Reduction From Baseline61.22 percentage of participants
Placebo_GPI1Percentage of Participants With ≥50% AHI Reduction From Baseline18.96 percentage of participants
Tirzepatide MTD_GPI2Percentage of Participants With ≥50% AHI Reduction From Baseline72.40 percentage of participants
Placebo_GPI2Percentage of Participants With ≥50% AHI Reduction From Baseline23.25 percentage of participants
p-value: <0.00195% CI: [30.76, 54.79]Regression, Logistic
p-value: <0.00195% CI: [36.55, 60.65]Regression, Logistic
Secondary

Percentage of Participants With AHI <5 or With AHI 5-14 With Epworth Sleepiness Scale (ESS) ≤10

The percentage of participants with OSA remission (AHI \<5 events per hour of sleep) or with mild OSA without excessive daytime sleepiness (AHI 5-14 events per hour of sleep with ESS ≤10) at Week 52 was evaluated. The ESS is used to assess improvements in excessive daytime sleepiness from baseline to Week 52. The ESS is an 8-item, participant-completed measure that asks the participant to rate, on a scale of 0 (no chance of dozing) to 3 (high chance of dozing), their usual chances of dozing in 8 different daytime situations, with a recall period of in recent times. The ESS total score is the sum of the 8-item scores and ranges from 0 to 24, with higher scores indicating greater daytime sleepiness.

Time frame: Week 52

Population: mITT population consisting of all randomized participants who are exposed to at least 1 dose of study intervention and have evaluable data for this outcome.

ArmMeasureValue (NUMBER)
Tirzepatide MTD_GPI1Percentage of Participants With AHI <5 or With AHI 5-14 With Epworth Sleepiness Scale (ESS) ≤1042.17 percentage of participants
Placebo_GPI1Percentage of Participants With AHI <5 or With AHI 5-14 With Epworth Sleepiness Scale (ESS) ≤1015.88 percentage of participants
Tirzepatide MTD_GPI2Percentage of Participants With AHI <5 or With AHI 5-14 With Epworth Sleepiness Scale (ESS) ≤1050.24 percentage of participants
Placebo_GPI2Percentage of Participants With AHI <5 or With AHI 5-14 With Epworth Sleepiness Scale (ESS) ≤1014.33 percentage of participants
p-value: <0.00195% CI: [18.27, 39.22]Regression, Logistic
p-value: <0.00195% CI: [22.12, 44.31]Regression, Logistic
Secondary

Percent Change From Baseline in Apnea-Hypopnea Index (AHI)

Percent Change From Baseline in AHI was evaluated.

Time frame: Baseline, Week 52

Population: mITT population consisting of all randomized participants who are exposed to at least 1 dose of study intervention and have evaluable data for this outcome.

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
Tirzepatide MTD_GPI1Percent Change From Baseline in Apnea-Hypopnea Index (AHI)-50.68 percentage changeStandard Error 5.9
Placebo_GPI1Percent Change From Baseline in Apnea-Hypopnea Index (AHI)-3.03 percentage changeStandard Error 7.07
Tirzepatide MTD_GPI2Percent Change From Baseline in Apnea-Hypopnea Index (AHI)-58.72 percentage changeStandard Error 5.28
Placebo_GPI2Percent Change From Baseline in Apnea-Hypopnea Index (AHI)-2.50 percentage changeStandard Error 6.95
p-value: <0.00195% CI: [-65.76, -29.55]ANCOVA
p-value: <0.00195% CI: [-73.73, -38.7]ANCOVA
Secondary

Percent Change From Baseline in Body Weight

Percent Change from Baseline in Body Weight was evaluated.

Time frame: Baseline, Week 52

Population: mITT population consisting of all randomized participants who are exposed to at least 1 dose of study intervention and have evaluable data for this outcome.

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
Tirzepatide MTD_GPI1Percent Change From Baseline in Body Weight-17.65 Percent changeStandard Error 0.69
Placebo_GPI1Percent Change From Baseline in Body Weight-1.56 Percent changeStandard Error 0.68
Tirzepatide MTD_GPI2Percent Change From Baseline in Body Weight-19.62 Percent changeStandard Error 0.71
Placebo_GPI2Percent Change From Baseline in Body Weight-2.34 Percent changeStandard Error 0.74
p-value: <0.00195% CI: [-17.99, -14.19]ANCOVA
p-value: <0.00195% CI: [-19.29, -15.28]ANCOVA

Source: ClinicalTrials.gov · Data processed: Sep 17, 2026