IBI306 Monotherapy in Non-Familial Hypercholesterolemia and Mixed Hyperlipidemia

A Randomized, Double-Blind, Placebo-Controlled Phase III Clinical Study to Evaluate the Efficacy and Safety of IBI306 Monotherapy in Participants With Non-Familial Hypercholesterolemia and Mixed Hyperlipidemia (CREDIT-5)

This is a multi-center, randomized, double-blind, placebo-controlled phase III clinical study evaluating the efficacy and safety of IBI306 monotherapy in Chinese Paricipants with non-familial hypercholesterolemia and mixed hyperlipidemia. Approximately 198 participants were planned to be enrolled in the study. The entire study period includes a screening period of no more than 2 weeks, a run-in period of 4 weeks, a double-blind treatment period of 12 weeks, and a safety follow-up period after the last treatment. Participants were required to maintain a stable and healthy lifestyle throughout the trial.

Study Overview

• Status: Recruiting
• Conditions: Non-Familial Hypercholesterolemia and Mixed Hyperlipidemia
• Intervention / Treatment: Drug: IBI306; Drug: IBI306; Drug: placebo; Drug: placebo

• Study Type: Interventional
• Enrollment (Estimated): 198
• Phase: Phase 3

Contacts and Locations

• Study Contact: Name: Yida Tang; Phone Number: 010-82266699; Email: tang_yida@163.com

Study Locations

• China
  • Beijing Municipality
    • Beijing, Beijing Municipality, China, 100083
      • Recruiting
      • Peking University Third Hospital
      • Contact: Yida Tang; Phone Number: 010-82266699; Email: tang_yida@163.com

Participation Criteria

Eligibility Criteria

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

Description

Inclusion Criteria:

1. Male or female, ≥18 and ≤75 years of age on the day of signing informed consent.
2. Fasting LDL-C ≥ 2.6 mmol/L and < 4.9 mmol/L measured in a local laboratory at screening and randomization.
3. Fasting triglyceride (TG) ≤ 5.64 mmol/L measured in a local laboratory at screening and randomization.
4. According to the 2023 Chinese Guidelines for the Management of Blood Lipids, the 10-year risk of atherosclerotic cardiovascular disease is assessed as low or moderate (< 10%).
5. Understand the study-related procedures and methods, and voluntarily participate in the study and sign the informed consent form.

Exclusion Criteria:

1. History of any of the following medical or treatment conditions:

1. Known allergies to the study drugs or their components, or severe allergic reactions to other antibody drugs.
2. Previously diagnosed as ASCVD, including acute coronary syndrome, stable coronary heart disease, post-revascularization, ischemic cardiomyopathy, ischemic stroke, transient ischemic attack, peripheral atherosclerotic disease, etc.
3. Confirmed or suspected familial hypercholesterolaemia according to UK Simon Broome criteria.
4. History of acute or chronic heart failure with New York Heart Association (NYHA) class III or IV, or left ventricular ejection fraction < 40% within 3 months prior to screening.
5. Previous diagnosis of severe arrhythmia, such as recurrent and symptomatic ventricular tachycardia, atrial fibrillation with rapid ventricular rate, or supraventricular tachycardia poorly controlled by medication, etc.
6. Poorly controlled hypertension, defined as sitting systolic blood pressure (SBP) ≥ 160 mmHg or diastolic blood pressure (DBP) ≥ 100 mmHg at screening or randomization.
7. Previous diagnosis of nephrotic syndrome, severe liver disease, Cushing's syndrome, and other diseases that significantly affect blood lipid levels.
8. History of type 1 diabetes mellitus, or type 2 diabetes mellitus with one of the following: (1) glycosylated hemoglobin (HbA1c) ≥ 8.5% at screening; (2) severe hypoglycemia within 6 months prior to screening; (3) insulin injection ≥ 2 times per day prior to screening.
9. History of malignancy within 5 years prior to screening.
10. Treatment with a PCSK9 monoclonal antibody within 6 months prior to screening or treatment with inclisiran prior to screening.
11. Participation in a clinical study of any medical device or other drug within 3 months prior to screening (except for screening failure), or less than 5 half-lives from the most recent dose of the investigational drug at screening.
12. Treatment with systemic cyclosporine within 3 months prior to screening.
13. Long-term continuous (≥ 7 days) or multiple (≥ 3 times) systemic glucocorticoid therapy within 3 months prior to screening (except for topical, intraocular, intranasal, inhaled, or intra-articular injection).
14. Treatment with weight-loss drugs or bariatric surgery within 3 months prior to screening.
15. History of drug or alcohol abuse prior to screening. Average weekly alcohol intake: more than 21 units for males and more than 14 units for females (1 unit = 360 mL of beer, or 150 mL of red wine, or 45 mL of distilled spirits/white wine).

2. Paricipants whose laboratory test parameters meet any of the following criteria at screening or randomization:

1. Estimated glomerular filtration rate ( eGFR) < 30 mL/min/1.73 m 2 using the MDRD formula.
2. Alanine aminotransferase (ALT) or aspartate aminotransferase (AST) > 3 × upper limit of normal (ULN), or total bilirubin > 1.5 × ULN.
3. Creatine kinase (CK) > 3 × ULN.
4. Hypothyroidism or hyperthyroidism, defined as thyroid-stimulating hormone (TSH) below the lower limit of normal or exceeding 1.5 times the ULN, respectively.
5. Positive for hepatitis B surface antigen (HBsAg) and/or hepatitis B core antibody (HBcAb) and HBV DNA copy number ≥ 1.0 × 10 3 /mL, or positive for hepatitis C antibody ( except for those who have received complete anti-hepatitis C treatment and whose HCV RNA is below the lower limit of detection ).
6. Positive for human immunodeficiency virus (HIV) antibodies or syphilis-specific antibodies.

3. Female participants of childbearing potential who did not use contraception within 4 weeks prior to screening, or male or female participants who did not agree to use contraception as specified in this protocol throughout the study and for 15 weeks after the last treatment.

4. Female participants who are pregnant or lactating. 5. The investigator believes that the subject has poor compliance, or there are factors that may bring unacceptable safety risks or affect the study results.

Study Plan

How is the study designed?

Design Details

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

Number of Arms

4

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Placebo Comparator: Placebo Q4W	Drug: placebo; Placebo Q2W; Drug: placebo; Placebo Q4W
Placebo Comparator: Placebo Q2W	Drug: placebo; Placebo Q2W; Drug: placebo; Placebo Q4W
Experimental: IBI306 150 mg Q2W	Drug: IBI306; IBI306 150 mg Q2W; Drug: IBI306; IBI306 450 mg Q4W
Experimental: IBI306 450 mg Q4W	Drug: IBI306; IBI306 150 mg Q2W; Drug: IBI306; IBI306 450 mg Q4W

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Time Frame
Percent change from baseline in LDL-C	week 12

Secondary Outcome Measures

Outcome Measure	Time Frame
Proportion of participants with LDL-C of less than 2.6 mmol/L	week 12
Proportion of participants with LDL-C of less than 1.8 mmol/L	week 12
Proportion of participants with LDL-C reduction of ≥50% from baseline	week 12
Change from baseline in LDL-C	week 12
Change and percentage change from baseline in non-HDL-C	week 12
Change and percentage change from baseline in ApoB	week 12
Change and percentage change from baseline in vLDL-C	week 12
Change and percentage change from baseline in Lp(a)	week 12
Change and percentage change from baseline in PCSK9	week 12

Collaborators and Investigators

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

Study record dates

Study Major Dates

• Study Start (Actual): April 1, 2026
• Primary Completion (Estimated): September 6, 2026
• Study Completion (Estimated): February 28, 2027

Study Registration Dates

• First Submitted: March 11, 2026
• First Submitted That Met QC Criteria: March 11, 2026
• First Posted (Actual): March 16, 2026

Study Record Updates

• Last Update Posted (Actual): April 14, 2026
• Last Update Submitted That Met QC Criteria: April 13, 2026
• Last Verified: April 1, 2026

More Information

Terms related to this study

• Additional Relevant MeSH Terms: Metabolism, Inborn Errors; Genetic Diseases, Inborn; Metabolic Diseases; Hyperlipidemias; Dyslipidemias; Lipid Metabolism Disorders; Lipid Metabolism, Inborn Errors; Hyperlipoproteinemias; Congenital, Hereditary, and Neonatal Diseases and Abnormalities; Nutritional and Metabolic Diseases; Hyperlipoproteinemia Type II
• Other Study ID Numbers: CIBI306B302

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No