This is a Study to Evaluate the Pharmacokinetics and Safety of IBI362 in Chinese Adolescents With Obesity

A Randomised, Double-blind, Placebo-controlled Trial to Assess Safety, Tolerability and Pharmacokinetics of IBI362 in Chinese Obese Adolescent Subjects

The study is a first-in-pediatric assessment of the safety, tolerability, and pharmacokinetic characteristics of multiple doses of IBI362 in Chinese adolescent subjects with obesity. It employs a multicenter, randomized, double-blind, and placebo-controlled trial design. The study plans to enroll 36 adolescents (aged ≥12 years and <18 years) with obesity who have experienced less than a 5% decrease in Body Mass Index (BMI) after at least 12 weeks of diet and exercise control.

Study Overview

• Status: Completed
• Conditions: Adolescents With Obesity
• Intervention / Treatment: Drug: IBI362; Drug: IBI362 placebo

• Study Type: Interventional
• Enrollment (Actual): 36
• Phase: Phase 1

Contacts and Locations

Study Locations

• China
  • Beijin
    • Beijin, Beijin, China, 100045
      • Beijing Children's Hospital, Capital Medical University Affiliated

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: Child; Adult
• Accepts Healthy Volunteers: No

Description

Inclusion Criteria:

1. Male or female subjects who are aged ≥12 years and <18 years at the time of signing the informed consent;
2. At screening, the Body Mass Index (BMI) meets the obesity criteria according to "WS/T586-2018 Screening Criteria for Overweight and Obesity in School-age Children and Adolescents";
3. Subjects who have maintained a controlled diet and exercise for at least 12 weeks prior to screening, with no more than a 5% decrease in BMI (as reported by the subject, parent, or legal guardian);
4. Able to maintain a stable diet and exercise lifestyle during the study period;
5. Capable of understanding the procedures and methods of this study, willing to strictly adhere to the clinical trial protocol to complete this trial, with both the subject and the parent or legal guardian voluntarily signing the informed consent form.

Exclusion Criteria:

1. Prepubertal subjects (Tanner Stage I)
2. Subjects for whom the investigator suspects an allergy to the study drug or any of its components, or subjects with a history of allergies
3. Use of other weight-loss medications or treatments prior to screening

4. Evidence or history of other medical conditions prior to screening:

   • HbA1c ≥ 6.5% at screening or a previous diagnosis of Type 1 or Type 2 diabetes
   • Presence of retinopathy at screening
   • History of severe hypoglycemia or recurrent symptomatic hypoglycemia
   • Obesity secondary to disease or medication, including hypercortisolism (e.g., Cushing's syndrome)
   • Previous bariatric surgery
   • History of moderate to severe depression; or history of serious psychiatric illness
   • Previous suicidal ideation or suicide attempt

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: Randomized
• Interventional Model: Sequential Assignment
• Masking: Double

Number of Arms

3

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: 362-dose1-4mg; The starting dose for the subjects is 2 mg, administered once weekly for 4 consecutive weeks. If the subject shows good tolerability, the dose will then be escalated to 4 mg, also given once weekly, for another 8 weeks (with an escalation rate of increasing 2 mg every 4 weeks until reaching the target dose).	Drug: IBI362; IBI362 SA.QW
Experimental: 362-dose2-6mg; Subjects start at a dose of 2 mg, administered once weekly for 4 consecutive weeks. Following this, if the subject demonstrates good tolerability#, the dose will be escalated to 4 mg, also administered once weekly, for another 4 weeks. After observing the subject's tolerability again, if it remains favorable#, the dose will be further escalated to 6 mg, administered once weekly, for another 4 weeks (dosing will increase by 2 mg every 4 weeks until reaching the target dose of 6 mg)	Drug: IBI362; IBI362 SA.QW
Experimental: 362-dose3-Placebo; Administration is via subcutaneous injection once weekly; the mode and form of placebo administration are consistent with those of IBI362, with continuous dosing over a 12-week period.	Drug: IBI362 placebo; IBI362 placebo SA.QW

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Time Frame
Incidence of adverse events and serious adverse events	up to week 20

Secondary Outcome Measures

Outcome Measure	Time Frame
Area under the Curve (AUC) of multi-dose of IBI362	up to week 12
Half-life (t1/2) of multi-dose of IBI362	up to week 12
Peak serum concentration (Cmax) of multi-dose of IBI362	up to week 12
Clearance (CL) of multi-dose of IBI362	up to week 12
Evaluate changes in subjects' fasting body weight in kilograms，Body Mass Index in kg/m2（BMI, combined with weight and height） relative to baseline	up to week 12
Evaluate changes in subjects' waist-to-hip ratio（combined with waistline and hips） relative to baseline	up to week 12
Evaluate changes in subjects' blood pressure in mmHg relative to baseline	up to week 12
Evaluate changes in subjects' lipid profile in mmol/L relative to baseline	up to week 12
Evaluate changes in subjects' glycated hemoglobin（Hemoglobin A1c,HbA1c）in % relative to baseline	up to week 12
Evaluate the mental health status of subjects by Patient Health Questionnaire (PHQ-9) following administration of IBI362.	up to week 20
Evaluate the mental health status of subjects by Columbia-Suicide Severity Rating Scale (C-SSRS) following administration of IBI362.	up to week 20

Collaborators and Investigators

• Sponsor: Innovent Biologics (Suzhou) Co. Ltd.

Study record dates

Study Major Dates

• Study Start (Actual): August 30, 2024
• Primary Completion (Actual): July 22, 2025
• Study Completion (Actual): August 1, 2025

Study Registration Dates

• First Submitted: July 25, 2024
• First Submitted That Met QC Criteria: July 31, 2024
• First Posted (Actual): August 2, 2024

Study Record Updates

• Last Update Posted (Estimated): September 12, 2025
• Last Update Submitted That Met QC Criteria: September 7, 2025
• Last Verified: September 1, 2025

More Information

Terms related to this study

• Additional Relevant MeSH Terms: Nutrition Disorders; Overnutrition; Body Weight; Overweight; Obesity; mazdutide
• Other Study ID Numbers: CIBI362B103

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: NO

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No
• product manufactured in and exported from the U.S.: No