Efficacy and Safety of GZR18 Every 2 Weeks Versus Tirzepatide and Placebo in Obese or Overweight Participants
EFFICACY and SAFETY of GZR18 INJECTED EVERY 2 WEEKS (Q2W) in PARTICIPANTS WITHOUT TYPE 2 DIABETES, WHO HAVE OBESITY or ARE OVERWEIGHT: a RANDOMIZED, TIRZEPATIDE- and PLACEBO-CONTROLLED STUDY
1 other identifier
interventional
285
1 country
20
Brief Summary
This is a Phase 2 study to evaluate the safety and efficacy of 24, 36, and 48 mg GZR18 (Q2W) compared with placebo and 15 mg tirzepatide (QW). The study will evaluate weight management in participants with obesity (BMI ≥30 kg/m2) or who are overweight (BMI ≥27 kg/m2) with weight-related comorbidities (excluding type 2 diabetes mellitus).
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P75+ for phase_2
Started Feb 2025
Shorter than P25 for phase_2
20 active sites
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
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Study Timeline
Key milestones and dates
First Submitted
Initial submission to the registry
December 16, 2024
CompletedFirst Posted
Study publicly available on registry
December 17, 2024
CompletedStudy Start
First participant enrolled
February 12, 2025
CompletedPrimary Completion
Last participant's last visit for primary outcome
February 9, 2026
CompletedStudy Completion
Last participant's last visit for all outcomes
June 22, 2026
ExpectedFebruary 4, 2025
December 1, 2024
12 months
December 16, 2024
February 3, 2025
Conditions
Keywords
Outcome Measures
Primary Outcomes (1)
Primary Objective
To demonstrate that GZR18 24 mg, 36 mg, and 48 mg is superior to placebo based on percentage change in body weight after 36 weeks of treatment
36 weeks
Study Arms (4)
24 mg GZR18 group
EXPERIMENTAL24 mg GZR18 group: 76 participants (57 receiving GZR18 and 19 receiving placebo)
36 mg GZR18 group
EXPERIMENTAL36 mg GZR18 group: 76 participants (57 receiving GZR18 and 19 receiving placebo)
48 mg GZR18 group
EXPERIMENTAL48 mg GZR18 group: 76 participants (57 receiving GZR18 and 19 receiving placebo)
Tirzepatide group
ACTIVE COMPARATORTirzepatide group: 57 participants receiving 15 mg tirzepatide
Interventions
Eligibility Criteria
You may qualify if:
- to 75 years of age (both inclusive) at the time of signing the informed consent form (ICF).
- History of failing to lose sufficient weight with lifestyle/dietary modification.
- BMI ≥30.0 kg/m2, or
- BMI ≥27.0 kg/m2 with at least 1 of the following:
- Hypertension: defined as taking blood pressure (BP) lowering medication or have a systolic blood pressure (SBP) of ≥130 mmHg or a diastolic blood pressure (DBP) of ≥80 mmHg at screening.
- Dyslipidemia: defined as taking lipid-lowering medication or have LDL ≥160 mg/dL (4.1 mmol/L) or triglycerides ≥150 mg/dL (1.7 mmol/L), or high-density lipoprotein (HDL) \<40 mg/dL (1.0 mmol/L) for men or HDL \<50 mg/dL (1.3 mmol/L) for women at screening.
- Obstructive sleep apnea.
- Cardiovascular disease: defined as having eg, ischemic cardiovascular disease or New York Heart Association (NYHA) Functional Classification Class I to II heart failure.
- \. In the investigator's opinion, are well motivated, capable, and willing to:
- Learn how to self-inject the IP as required for this protocol (visually impaired persons who are not able to perform the injections must have the assistance of a sighted individual trained to inject the IP; persons with physical limitations who are not able to perform the injections must have the assistance of an individual trained to inject the IP).
- Inject the IP (or receive an injection from a trained individual if visually impaired or with physical limitations).
- Follow study procedures for the duration of the study, including, but not limited to, lifestyle advice (eg, dietary changes and physical activity plan), complete the electronic diary (eDiary), and complete required questionnaires.
- Identify the biological sex for the study stratification. 5.Capable of giving signed informed consent, which includes compliance with the requirements and restrictions listed in the ICF and in this protocol.
- A self-reported change (increase or decrease) in body weight \>5 kg within 3 months prior to screening.
- Prior or planned surgical treatment for obesity (excluding liposuction or abdominoplasty, if performed \>1 year prior to screening).
- +88 more criteria
Contact the study team to confirm eligibility.
Sponsors & Collaborators
Study Sites (20)
KUR Research - Trinity @ Bessemer, AL Site Network
Bessemer, Alabama, 35022, United States
KUR Research - Trinity @ Centreville Site Network
Centreville, Alabama, 35042, United States
ERG - Woodland Int'l Research Group
Little Rock, Arkansas, 72211, United States
ERG - Woodland Research Northwest
Rogers, Arkansas, 72758, United States
Ark Clinical Research Ark-Fountain Valley
Fountain Valley, California, 92708, United States
Ark Clinical Research Ark-Long Beach
Long Beach, California, 90815, United States
Clinedge - Central Valley Research, LLC
Modesto, California, 95350, United States
Populace Health, LLC - Catalina Research Institute
Montclair, California, 91763, United States
East Coast Institute for Research - ECIR Jacksonville (Southside)
Jacksonville, Florida, 32216, United States
East Coast Institute for Research ECIR Jacksonville (Headquarters) University
Jacksonville, Florida, 32216, United States
3Sync Research - PCRS Network
Lake Worth, Florida, 33460, United States
Clever Medical Research - PCRS Network
Miami, Florida, 33126, United States
KUR Research @ Columbia Site Network
Columbia, Maryland, 21045, United States
Populace Health, LLC - Elixia SISU
Springfield, Massachusetts, 01103, United States
Populace Health, LLC - Vector Clinical Trials
Las Vegas, Nevada, 89128, United States
Populace Health, LLC - CTI Clinical Research Center
Cincinnati, Ohio, 45212, United States
ERG - Ohio Clinical Trials
Columbus, Ohio, 43212, United States
Elligo Clinical Research Center - Austin
Austin, Texas, 78704, United States
Clinvax Katy Research Center
Katy, Texas, 77493, United States
Endeavor Clinical Trials
San Antonio, Texas, 78229, United States
MeSH Terms
Conditions
Interventions
Condition Hierarchy (Ancestors)
Intervention Hierarchy (Ancestors)
Central Study Contacts
Study Design
- Study Type
- interventional
- Phase
- phase 2
- Allocation
- RANDOMIZED
- Masking
- QUADRUPLE
- Who Masked
- PARTICIPANT, CARE PROVIDER, INVESTIGATOR, OUTCOMES ASSESSOR
- Purpose
- TREATMENT
- Intervention Model
- PARALLEL
- Sponsor Type
- INDUSTRY
- Responsible Party
- SPONSOR
Study Record Dates
First Submitted
December 16, 2024
First Posted
December 17, 2024
Study Start
February 12, 2025
Primary Completion
February 9, 2026
Study Completion (Estimated)
June 22, 2026
Last Updated
February 4, 2025
Record last verified: 2024-12