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The purpose of this study is to evaluate the effect and safety of tirzepatide in participants with obstructive sleep apnea and obesity who are and plan to stay on PAP therapy in GPI-2

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 (SURMOUNT-OSA) ISA2 (GPI2): Participants with OSA on PAP Therapy - I8F-MC-GPI2

Status
Active, not recruiting
Phases
Phase 3
Study type
Interventional
Source
JPRN
Registry ID
JPRN-jRCT2031220155
Enrollment
206
Registered
2022-06-22
Start date
2022-10-07
Completion date
Unknown
Last updated
2026-06-29

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

Conditions

Sleep Apnea,Obesity

Interventions

-Experimental: Tirzepatide Maximum Tolerated Dose Participants will receive a low dose and then increase to a maximum tolerated dose 1 or dose 2 subcutaneously (SC). Participants are on PAP therapy. -

Sponsors

Masaki Takeshi
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: - Have been on PAP therapy for at least 3 consecutive months prior to screening and plan to continue PAP therapy during the study. - 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

Exclusion criteria: -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 -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 frame
Percent Change from Baseline in Apnea-Hypopnea Index (AHI) [ Time Frame: Baseline, Week 52 ]

Countries

Australia, Brazil, China, Czech Republic, Germany, Japan, Mexico, Taiwan, United States

Contacts

Public ContactTrial Guide Call Center

Eli Lilly Japan K.K.

LTG_CallCenter@lists.lilly.com+81-120-023-812

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026