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COMPARATIVE STUDY
JOURNAL ARTICLE
MULTICENTER STUDY
RANDOMIZED CONTROLLED TRIAL

Durability of the efficacy and safety of alogliptin compared with glipizide in type 2 diabetes mellitus: a 2-year study

S Del Prato, R Camisasca, C Wilson, P Fleck
Diabetes, Obesity & Metabolism 2014, 16 (12): 1239-46
25132212

AIMS: To evaluate the long-term durability of the efficacy of alogliptin compared with glipizide in combination with metformin in people with type 2 diabetes inadequately controlled on stable-dose metformin.

METHODS: This multicentre, double-blind, active-controlled study randomized 2639 patients aged 18-80 years to 104 weeks of treatment with metformin in addition to alogliptin 12.5 mg once daily (n = 880), alogliptin 25 mg once daily (n = 885) or glipizide 5 mg once daily, titrated to a maximum of 20 mg (n = 874). The primary endpoint was least square mean change from baseline in HbA1c level at 104 weeks.

RESULTS: The mean patient age was 55.4 years, the mean diabetes duration was 5.5 years and the mean baseline HbA1c was 7.6%. HbA1c reductions at week 104 were -0.68%, -0.72% and -0.59% for alogliptin 12.5 and 25 mg and glipizide, respectively [both doses met the criteria for non-inferiority to glipizide (p<0.001); alogliptin 25 mg met superiority criteria (p=0.010)]. Fasting plasma glucose concentration decreased by 0.05 and 0.18 mmol/l for alogliptin 12.5 and 25 mg, respectively, and increased by 0.30 mmol/l for glipizide (p < 0.001 for both comparisons with glipizide). Mean weight changes were -0.68, -0.89 and 0.95 kg for alogliptin 12.5 and 25 mg and glipizide, respectively (p < 0.001 for both comparisons with glipizide). Hypoglycaemia occurred in 23.2% of patients in the glipizide group vs. 2.5 and 1.4% of patients in the alogliptin 12.5 and 25 mg groups, respectively. Pancreatitis occurred in one patient in the alogliptin 25 mg group and three in the glipizide group.

CONCLUSIONS: Alogliptin efficacy was sustained over 2 years in patients with inadequate glycaemic control on metformin alone.

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