A Phase III Randomised, Double-blind, Placebo-controlled, Parallel Group Efficacy and Safety Study of Linagliptin (5 mg), Administered Orally Once Daily for at Least 52 Weeks in Type 2 Diabetic Patients in Combination With Basal Insulin Therapy

The objective of the current study is to investigate the efficacy, safety and tolerability of linagliptin (5 mg / once daily) compared to Placebo during long term treatment (52 weeks and longer) in combination with basal insulin in patients with type 2 diabetes mellitus with insufficient glycaemic control.