Comparing GZR4 versus insulin icodec for adults with type 2 diabetes on basal insulin

A Phase IIIb Clinical Study to Assess the Efficacy and Safety of GZR4 in Subjects With Type 2 Diabetes Mellitus Treated With Basal Insulin

This trial will test whether GZR4 works as well as and is as safe as insulin icodec for adults with type 2 diabetes who are being treated with basal insulin.

Quick facts

• Phase: PHASE3
• Study type: Interventional
• Enrollment: 300 (estimated)
• Ages: 18 Years and up
• Sex: All
• Sponsor: Gan & Lee Pharmaceuticals. (industry)
• Locations: 1 site (Linyi, Shandong)
• Trial ID: NCT07165223 on ClinicalTrials.gov

What this trial studies

This Phase IIIb interventional trial randomizes adults with type 2 diabetes who are treated with basal insulin to receive either GZR4 or insulin icodec, with or without background non‑insulin antidiabetic medications. The study will track blood sugar control, adverse events, and patient‑reported outcomes over the treatment period. Investigators will compare efficacy and safety between the two treatment arms and collect data on tolerability and patient experience. Results will inform whether GZR4 offers comparable or improved outcomes relative to insulin icodec in this population.

Who should consider this trial

Good fit: Adults aged 18 or older with type 2 diabetes who are currently treated with basal insulin and who can comply with study procedures and contraceptive requirements are the intended participants.

Not a fit: People with type 1 diabetes, pregnant or breastfeeding individuals, or those not using basal insulin or unable to follow contraception requirements are unlikely to benefit from this study.

Why it matters

Potential benefit: If successful, GZR4 could offer similar or better blood sugar control and tolerability compared with insulin icodec, possibly improving convenience or quality of life for patients on basal insulin.

How similar studies have performed: Previous clinical programs of long‑acting insulins such as insulin icodec have shown promising glycemic control and tolerability, while GZR4 appears to be a newer investigational option with less published data.

Eligibility criteria

Inclusion Criteria:

* Sign the Informed Consent Form (ICF) before the study, fully understand the contents, process and possible adverse reactions of the study, and be able to follow the contraindications and restrictions specified in this protocol.
* Males and females age ≥ 18 years at the time of informed consent.
* The pregnancy test for β-human chorionic gonadotropin (hCG) must be negative for women of childbearing potential during the screening period and prior to randomization.
* From signing the Informed Consent Form until 3 weeks after the end of treatment, female subjects of childbearing potential and male subjects and their partners must agree to use reliable contraceptive measures and not donate eggs (ova, oocytes) or sperm for assisted reproductive purposes.
* According to the diagnostic criteria and classification of diabetes mellitus issued by the World Health Organization (WHO) in 1999, and the supplementary diagnostic criteria recommended by WHO for diagnosis with Hemoglobin A1c (HbA1c) (2011), the time to diagnose T2DM is ≥ 180 days at screening.
* Before screening, basal insulin was given once or twice a day. Or Insulin Icodec was given once-weeekly before screening.

Exclusion Criteria:

* A history of allergy to drugs with two or more mechanisms of action in the past, or known allergies, hypersensitivity, or intolerance to the investigational medicinal product or its excipients.
* Subjects who are pregnant, lactating or planning to become pregnant during the study at screening.
* Participated in any drug clinical study (received non-placebo medication during the study) within a recent period of time (90 days or 5 half-lives of the previous investigational medicinal product, whichever is longer), or plans to participate in another clinical study before completing all scheduled assessments in this clinical study.
* Underwent invasive cardiovascular or cerebrovascular procedures within 180 days before screening; or experienced acute heart failure, myocardial infarction, stroke, or hospitalization due to angina unstable, transient ischaemic attack, or other acute cardiovascular events within 180 days before screening; or have a history of chronic cardiac failure classified as New York Heart Association Class III or IV at screening; or plan to undergo coronary, carotid, or peripheral arterial revascularisation procedures during the study; or have clinically significant abnormalities on the electrocardiogram (ECG) that the investigator considers inappropriate to participate in this study (such as second-degree type II or third-degree atrioventricular block, ventricular fibrillation, etc.).
* History of malignant tumors within 5 years before screening (excluding adequately treated or resected non-metastatic basal or squamous cell skin cancer, cervical carcinoma in situ, or prostate cancer in situ) or the presence of underlying malignancy at screening.
* The patient with SBP ≥ 160 mmHg or DBP ≥ 100 mmHg during screening.
* Subjects who are unable to comply with the requirements of this protocol as judged by the investigator, or have any other conditions that the investigator considers inappropriate to participate in this study.

Where this trial is running

Linyi, Shandong

• Gan & Lee Pharmaceuticals Shandong Co., Ltd. — Linyi, Shandong, China (RECRUITING)

Study contacts

• Study coordinator: juan wu

Conditions: Diabetes, GZR4 insulin