Trial design and baseline data for LIRA-PRIME: A randomized trial investigating the efficacy of liraglutide in controlling glycaemia in type 2 diabetes in a primary care setting

Diabetes Obes Metab. 2019 Jul;21(7):1543-1550. doi: 10.1111/dom.13682. Epub 2019 Mar 26.


Aims: Using a pragmatic approach, the LIRA-PRIME trial aims to address a knowledge gap by comparing efficacy in controlling glycaemia with glucagon-like peptide-1 analog liraglutide vs oral antidiabetic drugs (OADs) in patients with type 2 diabetes (T2D) uncontrolled with metformin monotherapy in primary care practice. We report the study design and patient baseline characteristics.

Materials and methods: This 104-week, two-arm, open-label, active-controlled trial is active in 219 primary care practices across nine countries. At screening, eligible patients with T2D were at least 18 years of age, had been using a stable daily dose of metformin ≥1500 mg or the maximum tolerated dose for ≥60 days, and had a glycated haemoglobin (HbA1c) of 7.5% to 9.0%, measured ≤90 days before screening. Patients were randomized (1:1) to liraglutide or OAD, both in addition to pre-trial metformin. Individual OADs were chosen by the treating physician based on local guidelines. The primary endpoint is time to inadequate glycaemic control, defined as HbA1c above 7.0% at two scheduled consecutive visits after the first 26 weeks of treatment.

Results: The trial randomized 1997 patients with a mean (standard deviation) age of 56.9 (10.8) years, T2D duration of 7.2 (5.9) years (range, <1-47 years), and HbA1c of 8.2%. One-fifth of patients had a history of diabetes complications, and most were overweight (24.8%) or had obesity (65.3%).

Conclusions: This pragmatically designed, large-scale, multinational, randomized clinical trial will help guide treatment decisions for patients with T2D who are inadequately controlled with metformin monotherapy and treated in primary care.

Keywords: GLP-1; liraglutide; type 2 diabetes.

Publication types

  • Randomized Controlled Trial
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adult
  • Aged
  • Blood Glucose / analysis
  • Diabetes Mellitus, Type 2 / drug therapy*
  • Female
  • Glycated Hemoglobin A / analysis
  • Humans
  • Hyperglycemia / drug therapy
  • Hypoglycemic Agents* / administration & dosage
  • Hypoglycemic Agents* / therapeutic use
  • Liraglutide* / administration & dosage
  • Liraglutide* / therapeutic use
  • Male
  • Middle Aged
  • Young Adult


  • Blood Glucose
  • Glycated Hemoglobin A
  • Hypoglycemic Agents
  • Liraglutide