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Completed

NCT Number: NCT00918138

Study To Evaluate 24 Hour Blood Sugar Control (24-hour Mean Weighted Glucose) In Subjects That Are Taking Saxagliptin 5 mg Added Onto Metformin XR 1500 XR mg Compared To Subjects Taking Metformin XR 1500 mg Up-titrated To Metformin XR 2000 mg

The purpose of this study was to compare effect of Saxagliptin as add-on to Metformin on 24-hour mean weighted glucose (MWG) to the effect of uptitrating Metformin in subjects with T2DM inadequately controlled on metformin alone.

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Key information

Conditions

Type 2 Diabetes Diabetes Mellitus Diabetes Mellitus, Type 2 Endocrine System Diseases Glucose Metabolism Disorders Metabolic Diseases Nutritional and Metabolic Diseases

Age range

18 year–78 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Phase 3

Primary location

Local Institution, Buenos Aires, Argentina

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Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Type 2 diabetes
  • 18-78 years of age
  • Taking stable dose of metformin immediate release (IR) or XR ≥850 mg and ≤1500 mg as monotherapy for at least 8 weeks prior to screening
  • Glycosylated hemoglobin A1C (A1C) 7.5-11.5% at screening
  • Fasting C-peptide: ≥1.0 ng/mL
  • FPG≥126 mg/dl obtained at the Day -7 visit
  • Body mass index (BMI): ≤ 40kg/m²
  • A1C ≥ 7.0% and ≤ 11.0% obtained at the Day -7 visit for randomization

Exclusion criteria

  • Women of childbearing potential unable or unwilling to use acceptable birth control
  • Women who are pregnant or breastfeeding
  • Significant cardiovascular history
  • Active liver disease
  • Renal impairment

Treatment and study plan

Saxagliptin

Drug

Tablets, Oral, 5 mg, once daily, 4 weeks

Other names: BMS-477118, Onglyza

Metformin XR

Drug

Tablets, Oral, 1500 mg, once daily, 4 weeks

Other names: Glucophage XR®

Placebo matching Metformin XR

Drug

Tablets, Oral, 0 mg, once daily, 4 weeks

Placebo matching Saxagliptin

Drug

Tablets, Oral, 0 mg, once daily, 4 weeks

Primary outcomes

  1. Change From Baseline in 24-Hour Mean Weighted Glucose (MWG) at Week 4

    Time frame: Baseline, Week 4

    Adjusted mean change from baseline in MWG achieved with saxagliptin 5 mg plus metformin XR versus placebo plus metformin XR at Week 24. MWG was calculated as the area under the curve (AUC) for the full 24 hours expressed as average mg/dL. Glucose measurements were collected 30 minutes before and just prior to each meal (0 minutes) and 30, 60, 120, and 180 minutes after each meal (with 1 additional measurement at 240 minutes after the evening meal), midnight, 3 AM, and at end-of-domicile visit 24 hours after the first measurement. Mean change from baseline was adjusted for baseline value.

Secondary outcomes

  1. Change From Baseline to Week 4 in 2-hour Postprandial Glucose (PPG) (2 Hours After the Evening Meal)

    Time frame: Baseline, Week 4

    Adjusted mean change from baseline in 2-hour postprandial (after mealtime) plasma glucose two hours after start of the evening meal during 24-hour domicile visits evaluated both at pre-randomization (baseline) and at Week 4. Mean change from baseline was adjusted for baseline value.

  2. Change From Baseline Fasting Plasma Glucose (FPG) at Week 4, Obtained Immediately Before the Morning Meal

    Time frame: Baseline, Week 4

    FPG measurements were done at baseline, day 14 and 28. At baseline and day 28, the FPG value=plasma glucose value collected 30 minutes prior to the morning meal during the domicile visit.

Other outcomes

  1. Participants With Confirmed Hypoglycemia Events During the Treatment Period

    Time frame: AEs: up to last treatment day (LTD) +1 day or last visit day (LVD), whichever came last ; SAEs: up to LTD +30 days or LVD + 30 days, whichever came last. Mean duration of exposure=27.7 days for Saxa 5 mg + Met XR 1500 mg, and 28.3 days for Met 2000 mg.

    'Confirmed' = recorded on the hypoglycemia AE case report form with a fingerstick for glucose <= 50 mg/dL and associated symptoms.

  2. Participants With Reported Hypoglycemic Adverse Events During Treatment Period

    Time frame: AEs: up to last treatment day (LTD) +1 day or last visit day (LVD), whichever came last ; SAEs: up to LTD +30 days or LVD + 30 days, whichever came last. Mean duration of exposure=27.7 days for Saxa 5 mg + Met XR 1500 mg, and 28.3 days for Met 2000 mg.

    Hypoglycemic events are based upon the Saxagliptin Predefined List of Events, which includes hypoglycemia, blood glucose decreased, and hypoglycemic unconsciousness. The Hypoglycemic events occurred in less than 5% of the participants and hence do not appear in the adverse events module.

Sponsors and collaborators

Lead sponsor

AstraZeneca

Industry

Registry information

Official study title

A 4-Week, Multicenter, Randomized, Double-Blind, Phase 3b Trial to Evaluate the Efficacy of Saxagliptin in Combination With Metformin XR 1500 mg Versus Up-titrated Metformin XR to 2000 mg in Subjects With Type 2 Diabetes Who Have Inadequate Glycemic Control With Diet and Exercise and a Stable Dose of Metformin XR 1500 mg

Important dates

Study start
2009
Primary completion
2010
Study completion
2010
First posted
Jun 11, 2009
Registry last updated
May 21, 2015

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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