Comprehensive Add on Study in Japan

An Open Label, Randomised, Parallel Group Safety and Efficacy Study of Linagliptin (5 mg Administered Orally Once Daily) Over 52 Weeks in Patients With Type 2 Diabetes Mellitus and Insufficient Glycaemic Control Despite Background Mono-therapy With an Approved Antidiabetic Drug

The objective of the current study is to investigate the safety and efficacy of linagliptin (5mg / once daily) given for 52 weeks as add-on therapy to patients with type 2 diabetes mellitus and insufficient glycaemic control despite diet, exercise, and treatment with one approved antidiabetic drug.

Inclusion criteria:

1. Diagnosis of type 2 diabetes mellitus
2. Male and female patients on diet and exercise regimen who are treated with one antidiabetic drug

Exclusion criteria:

1. Myocardial infarction, stroke, transient ischemic attack, or pulmonary embolism
2. Impaired hepatic function
3. Glitazone, glinide, and sulfonylurea group: renal failure or renal impairment defined as estimated glomerular filtration rate <30 ml/min (severe renal impairment) at Visit 1, Biguanide group: renal failure or renal impairment defined as estimated glomerular filtration rate <60 ml/min (moderate renal impairment) at Visit 1
4. Treatment with anti-obesity drugs