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  • Title: Efficacy and safety of exenatide administered before the two largest daily meals of Latin American patients with type 2 diabetes.
    Author: Forti A, Garcia EG, Yu MB, Jimenez MC, Brodows RG, Oliveira JH.
    Journal: Curr Med Res Opin; 2008 Sep; 24(9):2437-47. PubMed ID: 18662495.
    Abstract:
    OBJECTIVE: To evaluate whether exenatide administered before breakfast and dinner (BD) or before lunch and dinner (LD) provided similar glycemic control in Latin American patients with type 2 diabetes mellitus (T2DM) who consume a small breakfast. METHODS: In this open-label, 2-arm study, patients taking metformin, sulfonylureas, and/or thiazolidinediones were randomized to exenatide before BD or before LD (5-mug exenatide for 4 weeks, then 10-microg exenatide for 8 weeks). Treatment assignment was determined by a computer-generated random sequence using an interactive response system. Patients were eligible for study inclusion if they consumed <15% of their total caloric intake at breakfast. The primary endpoint was HbA(1c) change from baseline to endpoint. Secondary endpoints included fasting serum glucose (FSG) level, 7-point SMBG profile, and safety. Clinicaltrials.gov Identifier: NCT00359879. RESULTS: 377 participants (55% female, age 54 +/- 10 years, weight 82 +/- 15 kg, BMI 31 +/- 4 kg/m(2), HbA(1c) 8.4 +/- 0.9%; mean +/- SD) from Brazil and Mexico were randomized to study treatment. HbA(1c) reduction with exenatide administration before BD was non-inferior to administration before LD (mean difference between (LD-BD) treatments: 0.14%; 95% CI -0.04 to 0.32%, p=0.120). Both treatments resulted in statistically significant HbA(1c) reductions at endpoint (BD -1.2% and LD -1.1%, respectively, p<0.001). In Brazil, the non-inferiority criteria were met for HbA(1c) reduction between treatment arms (-0.12%; CI -0.37 to 0.13%, p=0.344), whereas in Mexico, there was a difference favoring exenatide administration before BD (0.41%; CI 0.16 to 0.66%, p=0.002). At endpoint, there were no statistical significant differences between the BD and LD arms in mean change in FSG (0.50 mmol/L; CI -0.02 to 1.02 mmol/L, p=0.058) and daily mean change in SMBG (0.19 mmol/L; CI -0.17 to 0.54 mmol/L, p=0.295). The rates of symptomatic hypoglycemia (5.2 events/patient-year vs. 6.1 events/patient-year) and nausea (23% vs. 25%), were similar between the BD and LD arms, respectively. A limitation of the study design was that caloric intake of patients and meal times were not monitored. CONCLUSIONS: In T2DM patients who consume a small breakfast, exenatide administration before breakfast or lunch resulted in significant improvement in glycemic control.
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