Phase III Study of UBT251 Injection in Patients With Type 2 Diabetes Mellitus With Inadequate Glycemic Control on Diet and Exercise Alone（UNIGUIDE-1） (UNIGUIDE-1)

A Multicenter, Randomized, Double-Blind, Parallel-Group, Placebo-Controlled Phase III Trial to Evaluate the Efficacy and Safety of UBT251 Injection in Patients With Type 2 Diabetes Mellitus With Inadequate Glycemic Control on Diet and Exercise Alone（UNIGUIDE-1）

This multicenter, randomized, double-Blind, parallel-group, placebo-controlled phase III trial is to evaluate the efficacy and safety of UBT251 Injection in patients with Type 2 Diabetes Mellitus with inadequate glycemic control on diet and exercise alone

Study Overview

• Status: Not yet recruiting
• Conditions: Type 2 Diabetes
• Intervention / Treatment: Drug: UBT251 Injection 4.0 mg; Drug: UBT251 Injection Placebo 4.0 mg; Drug: UBT251 Injection Placebo 6.0 mg; Drug: UBT251 Injection 2.0 mg; Drug: UBT251 Injection 6.0 mg; Drug: UBT251 Injection Placebo 2.0 mg

• Study Type: Interventional
• Enrollment (Estimated): 360
• Phase: Phase 3

Contacts and Locations

• Study Contact: Name: Haiyan Zhang; Phone Number: +86 18998165570; Email: zhanghy@tul.com.cn

Study Locations

• China
  • Changsha
    • Hunan, Changsha, China
      • The Second Xiangya Hospital of Central South University
      • Contact: Zhiguang Zhou; Phone Number: 0731-85367220; Email: zhouzg@hotmail.com

Participation Criteria

Eligibility Criteria

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

Description

Inclusion Criteria:

1. Aged 18-75 years (inclusive) at the time of signing the informed consent form (ICF), regardless of gender;
2. Diagnosed with type 2 diabetes mellitus (T2DM) for at least 3 months in accordance with the 2019 World Health Organization (WHO) criteria;
3. Managed solely through diet and exercise intervention (without the use of any glucose-lowering medications) for at least 3 months prior to screening;
4. Glycated hemoglobin (HbA1c) level ≥7.5% and ≤10.5% at screening;
5. Body mass index (BMI) ≥23.0 kg/m² at screening, and stable body weight (change <5%, which may be based on the participant's self-report) within 3 months prior to screening;
6. Trial participants (including their partners) have no plan for pregnancy from screening to 6 months after trial completion, and are willing to comply with the contraceptive measures specified in the trial, and have no plan for sperm or egg donation within 6 months after trial completion;
7. Have been fully informed about this study and voluntarily sign a written informed consent form.

Exclusion Criteria:

1. Known history of hypersensitivity to this study drug, its drug product excipients, or other similar active drugs;
2. History of medication use within 3 months prior to screening that meets any of the following conditions:

1) Use of any glucose-lowering medications, including glucagon-like peptide-1 (GLP-1) analogues, oral antidiabetic drugs (OADs) (including but not limited to metformin, sulfonylureas, dipeptidyl peptidase-4 (DPP-4) inhibitors, alpha-glucosidase inhibitors, thiazolidinediones, glinides, sodium-glucose cotransporter 2 (SGLT-2) inhibitors), insulin (except for short-term use ≤14 days for acute conditions, such as perioperative or inpatient use), traditional Chinese medicines, or health supplements with glucose-lowering effects; 2) Use of medications that may affect glucose metabolism, such as systemic glucocorticoids, growth hormone, etc. (except for cumulative use <7 days with the last dose administered more than 7 half-lives prior to the first day of screening); 3) Use of weight-loss medications (including but not limited to orlistat, liraglutide, or other similar prescription or over-the-counter medications for weight loss); 3.History or evidence of any of the following diseases:

1. Diagnosis of other types of diabetes: such as type 1 diabetes mellitus (T1DM), other specific types of diabetes (e.g., genetic defects in beta-cell function, genetic defects in insulin action, diseases of the exocrine pancreas, etc.);
2. History of acute or chronic pancreatitis, or pancreatic surgery;
3. History of symptomatic gallbladder disease within 1 year before screening (excluding trial participants who have undergone cholecystectomy [completed at least 3 months before screening] without long-term complications), or abdominal ultrasound at screening indicating large gallstones (diameter ≥2 cm), gallbladder polyps (diameter ≥1 cm), or other gallbladder lesions that the study physician determines may affect trial participant safety;
4. Personal or family history (within first-degree relatives, i.e., parents, children, or siblings) of medullary thyroid carcinoma (MTC) or multiple endocrine neoplasia type 2 (MEN2);
5. History of hematological disorders that may affect HbA1c test results or increase the risk to trial participants (e.g., aplastic anemia, myelodysplastic syndromes, etc.), or any diseases causing hemolysis or erythrocyte instability (e.g., sickle cell disease, thalassemia, etc.);
6. History of moderate to severe depression or severe psychiatric disorders (including but not limited to suicidal ideation or attempt, schizophrenia, bipolar disorder, etc.);
7. History of clinically significant cardiovascular or cerebrovascular disease within 6 months before screening
8. Severe retinal or macular disease (including but not limited to proliferative retinopathy, macular edema, retinal detachment, etc.) at screening or in the past, requiring urgent treatment as determined by the study physician;
9. Severe hypoglycemia (hypoglycemia accompanied by severe cognitive impairment requiring assistance from others to recover) or recurrent symptomatic hypoglycemia (≥2 episodes in 6 months) within 6 months prior to screening;
10. History of acute metabolic complications of diabetes (including but not limited to diabetic ketoacidosis [DKA], hyperosmolar hyperglycemic state [HHS] requiring hospitalization, hyperosmolar coma, lactic acidosis, etc.) or diabetic foot within 6 months prior to screening;
11. History of malignancy; 4.Blood loss ≥400 mL (including trauma, blood draw, blood donation) within 3 months before screening, or receipt of blood or blood component transfusion; 5.Lactating women or pregnant women;

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: Randomized
• Interventional Model: Parallel Assignment
• Masking: Triple

Number of Arms

6

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: UBT251 Injection 2.0 mg; Each subject will receive UBT251 Injection s.c. once weekly for 36 weeks. Each dose group will be titrated starting from the initial dose, administered once weekly, and escalated to the next dose after 4 weeks until the target maintenance dose is reached, with a total treatment duration of 36 weeks.	Drug: UBT251 Injection 2.0 mg; UBT251 Injection subcutaneously once weekly
Experimental: UBT251 Injection 4.0 mg; Each subject will receive UBT251 Injection, s.c. once weekly for 36 weeks. Each dose group will be titrated starting from the initial dose, administered once weekly, and escalated to the next dose after 4 weeks until the target maintenance dose is reached, with a total treatment duration of 36 weeks.	Drug: UBT251 Injection 4.0 mg; UBT251 Injection subcutaneously once weekly
Experimental: UBT251 Injection 6.0 mg; Each subject will receive UBT251 Injection s.c. once weekly for 36 weeks. Each dose group will be titrated starting from the initial dose, administered once weekly, and escalated to the next dose after 4 weeks until the target maintenance dose is reached, with a total treatment duration of 36 weeks.	Drug: UBT251 Injection 6.0 mg; UBT251 Injection subcutaneously once weekly
Placebo Comparator: UBT251 Injection Placebo 2.0 mg; Each subject will receive UBT251 Injection Placebo, s.c. once weekly for 36 weeks. Each dose group will be titrated starting from the initial dose, administered once weekly, and escalated to the next dose after 4 weeks until the target maintenance dose is reached, with a total treatment duration of 36 weeks.	Drug: UBT251 Injection Placebo 2.0 mg; UBT251 Injection placebo subcutaneously once weekly
Placebo Comparator: UBT251 Injection Placebo 4.0 mg; Each subject will receive UBT251 Injection Placebo, s.c. once weekly for 36 weeks. Each dose group will be titrated starting from the initial dose, administered once weekly, and escalated to the next dose after 4 weeks until the target maintenance dose is reached, with a total treatment duration of 36 weeks.	Drug: UBT251 Injection Placebo 4.0 mg; UBT251 Injection placebo subcutaneously once weekly
Placebo Comparator: UBT251 Injection Placebo 6.0 mg; Each subject will receive UBT251 Injection Placebo, s.c. once weekly for 36 weeks. Each dose group will be titrated starting from the initial dose, administered once weekly, and escalated to the next dose after 4 weeks until the target maintenance dose is reached, with a total treatment duration of 36 weeks.	Drug: UBT251 Injection Placebo 6.0 mg; UBT251 Injection placebo subcutaneously once weekly

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
HbA1c	Change in HbA1c from Baseline	Week 36

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Body weight	Percent change in body weight from baseline	Week 36
Proportion of participants with HbA1c <7.0%，HbA1c ≤6.5% and <5.7	Proportion of participants with HbA1c <7.0%，HbA1c ≤6.5% and <5.7 from baseline	Week 36
Proportion of participants with body weight reduction ≥5%	Proportion of participants with body weight reduction ≥5% from baseline	Week 36
Proportion of trial participants with HbA1c <7.0% and body weight reduction ≥5%	Proportion of trial participants with HbA1c <7.0% and body weight reduction ≥5% from baseline	Week 36
HbA1c	Change in HbA1c from baseline	Week 12，Week 24

Collaborators and Investigators

• Sponsor: The United Bio-Technology (Hengqin) Co., Ltd.

Study record dates

Study Major Dates

• Study Start (Estimated): August 10, 2026
• Primary Completion (Estimated): September 24, 2027
• Study Completion (Estimated): October 22, 2027

Study Registration Dates

• First Submitted: June 15, 2026
• First Submitted That Met QC Criteria: June 15, 2026
• First Posted (Actual): June 22, 2026

Study Record Updates

• Last Update Posted (Actual): June 22, 2026
• Last Update Submitted That Met QC Criteria: June 15, 2026
• Last Verified: June 1, 2026

More Information

Terms related to this study

• Additional Relevant MeSH Terms: Endocrine System Diseases; Metabolic Diseases; Glucose Metabolism Disorders; Diabetes Mellitus; Nutritional and Metabolic Diseases; Diabetes Mellitus, Type 2
• Other Study ID Numbers: TUL-UBT251（III-2）202602

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