Endocrine Journal
Online ISSN : 1348-4540
Print ISSN : 0918-8959
ISSN-L : 0918-8959
ORIGINALS
Exenatide Exhibits Dose-Dependent Effects on Glycemic Control over 12 Weeks in Japanese Patients with Suboptimally Controlled Type 2 Diabetes
Takashi KADOWAKIMitsuyoshi NAMBAAyuko YAMAMURAHideaki SOWAAnne M WOLKARobert G BRODOWS
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JOURNAL FREE ACCESS

2009 Volume 56 Issue 3 Pages 415-424

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Abstract

This study assessed the dose-dependent efficacy and safety of exenatide over 12 weeks in Japanese patients with type 2 diabetes suboptimally controlled despite therapeutic doses of sulfonylurea (SU), SU plus biguanide, or SU plus thiazolidinedione. Patients were randomly assigned to placebo (N = 40), 2.5 μg (N = 38), 5 μg (N = 37), or 10 μg (N = 38) exenatide administered subcutaneously twice daily (BID). Patients randomly assigned to 10 μg exenatide received 5 μg BID for the first 4 weeks, with the dose escalated to 10 μg BID for the final 8 weeks. Patients were 60.3 ± 9.7 years old, with body mass index 25.3 ± 4.3 kg/m2 and hemoglobin A1c (HbA1c) 8.0 ± 0.8%. Baseline-to-endpoint HbA1c changes (%) were +0.02 ± 0.1 (placebo), -0.9 ± 0.1 (2.5 μg), -1.2 ± 0.1 (5 μg), and -1.4 ± 0.1 (10 μg) (all p < 0.001 vs. placebo). Of patients with baseline HbA1c -7%, 5.1% (placebo), 50.0% (2.5 μg), 71.4% (5 μg), and 79.4% (10 μg) achieved HbA1c <7% at endpoint (p < 0.001, trend test). Baseline-to-endpoint fasting plasma glucose changes (mg/dL) were +6.0 ± 4.8 (placebo), -18.6 ± 5.7 (2.5 μg), -25.0 ± 7.0 (5 μg), and -28.9 ± 5.9 (10 μg) (all p ≤ 0.001 vs. placebo). Treatment-emergent adverse events were mostly mild; dose-dependent increases in incidence were observed for hypoglycemia, nausea, anorexia, decreased appetite, and diarrhea (all p ≤ 0.044, trend test). Over 12 weeks, exenatide dose-dependently improved glycemic control in Japanese patients with type 2 diabetes.

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© The Japan Endocrine Society
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