Alogliptin use in elderly people: a pooled analysis from phase 2 and 3 studies

Richard E Pratley, Thérèse McCall, Penny R Fleck, Craig A Wilson, Qais Mekki
Journal of the American Geriatrics Society 2009, 57 (11): 2011-9

OBJECTIVES: To compare the efficacy and safety of alogliptin, a dipeptidyl peptidase-4 (DPP-4) enzyme inhibitor, in elderly (> or =65) and younger (<65) patients with type 2 diabetes mellitus.

DESIGN: Pooled analysis of six randomized, double-blind, placebo-controlled studies of alogliptin.

PARTICIPANTS: Patients aged 18 to 80 with type 2 diabetes mellitus and inadequate glycemic control.

INTERVENTIONS: Elderly (mean age 70.0; n=455) and younger (mean age 51.8; n=1,911) patients received alogliptin 12.5 mg (n=922), alogliptin 25 mg (n=910), or placebo (n=534) for 26 weeks (12 weeks in a Phase 2 study). The studies evaluated alogliptin as monotherapy and coadministered with pioglitazone, glyburide, metformin, or insulin.

MEASUREMENTS: Efficacy endpoints included change from baseline in glycosylated hemoglobin (HbA1c), fasting plasma glucose (FPG), weight, and lipid values. Safety variables included hypoglycemic events, adverse events, and blood pressure.

RESULTS: Least-squares mean HbA1c decreased from baseline by 0.7% and 0.8% in elderly patients receiving alogliptin 12.5 and 25 mg, respectively, and 0.5% and 0.6%, respectively, in younger patients (P<.001 for both alogliptin doses vs placebo for both age groups P=.70 for 12.5 mg and .68 for 25 mg for differences between age groups). Results were similar for FPG. Incidence of hypoglycemia was 8.3% or less in all alogliptin groups (< or =10.5% for placebo), with no apparent difference between elderly and younger patients. Changes in weight were negligible in all treatment groups in both age categories. The safety profiles of alogliptin were similar in the age and dose groups.

CONCLUSION: Alogliptin was effective and well tolerated in the elderly patients enrolled in these studies. Improvements in HbA1c were similar to those seen in younger patients, and no increase in the risk of hypoglycemia, weight gain, or other adverse events was apparent in elderly patients.


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