Effect of Anti-diabetic Drugs on Glycemic Variability. A Comparison Between Gliclazide MR (Modified Release) and Dapagliflozin on Glycemic Variability Measured by Continuous Glucose Monitoring (CGM) in Patients With Uncontrolled Type 2 Diabetes
试验速览
- 阶段
- 4 期
- 状态
- 已完成
- 入组人数
- 135
- 试验地点
- 1
- 主要终点
- Glycemic Variability
研究概览
简要总结
Objectives
Primary objective:
To access the change from baseline to week 12 in MAGE index of glycemic variability measured by CGMS for dapagliflozin versus. gliclazide MR.
Secondary objectives:
- Change from baseline to week 12 in glycated hemoglobin A1c (HbA1c), fasting plasma glucose, postprandial glucose and achievement of HbA1c ≤6.5% and <7% at the end of the study) for dapagliflozin versus gliclazide MR.
- Change from baseline to week 12 in glycemic variability defined by the interquartile range (IQR - interval between 25th and 75th percentiles) measured by CGMS for dapagliflozin versus gliclazide MR.
- Change from baseline to week 12 in glycemic variability measured by the Standard Deviation of the mean glycemia (SD) measured by CGMS for dapagliflozin versus gliclazide MR.
- Change from baseline to week 12 in glycemic variability measured by the Coefficient of Variation (CV) measured by CGMS for dapagliflozin versus gliclazide MR.
- Change from baseline to week 12 in the time spent on hypoglycemic range (glycemia <70mg/dL) measured by CGMS for dapagliflozin versus gliclazide MR.
Study design This is a single-center, prospective, randomized, open-label, comparative, phase IV study to compare the effects of gliclazide MR and dapagliflozin on Glycemic Variability in patients with Type 2 Diabetes Mellitus (T2DM). All patients should be treatment naïve or receive standard of care therapy for T2DM as well as for co-morbidities based on accepted guidelines and local best practices.
Target patient population Approximately 120 patients with T2DM will be randomized from study site. Patients who were treated with metformin only and had inadequate glycemic control at the time of enrollment as well as treatment naïve or non-medically treated (e.g., diet) patients, will be enrolled and receive either dapagliflozin 10mg qd or comparator gliclazide MR 120mg qd in addition to standard of care treatment for T2DM and co-morbidities.
Investigational product, dosage and mode of administration Dapagliflozin 10mg tablets administered orally once daily for 12 weeks.
Comparator, dosage and mode of administration Gliclazide MR 60mg tablets administered orally, 2 tablets once daily for 12 weeks.
Duration of treatment The treatment with study medication or comparator will have a total duration of 15 weeks.
详细描述
INTRODUCTION Dapagliflozin is a highly potent, selective, and reversible inhibitor of sodium-glucose cotransporter-2 (SGLT2), the major transporter responsible for renal glucose reabsorption.1 Dapagliflozin lowers plasma glucose by inhibiting the renal reabsorption of glucose and by promoting its urinary excretion in patients with type 2 diabetes mellitus (T2DM).
Gliclazide MR is a highly potent and selective sulphonylurea considered by specialists a reference in this class, because of its low risk of hypoglycemia and no increasing in cardiovascular mortality. Gliclazide MR increases the physiological mechanism of insulin secretion, thus reducing the postprandial and fasting glucose levels in patients with type 2 diabetes.
There is an increasing large amount of evidences showing that rapid fluctuations in blood glucose and high glycemic variability may have an important role in the development of diabetes complications. Cardiovascular disease, endothelial dysfunction and oxidative stress are common complications among patients with type 2 diabetes and glycemic variability may be an important factor in their development. Previous studies have shown that vildagliptin, a dipeptidyl peptidase 4 inhibitor (DPP-4 inhibitor), could improve not only the mean blood glucose but also the 24-hour glucose fluctuation by restoring the physiological pattern of insulin and glucagon secretion. SGLT-2 inhibitors are novel anti-diabetic drugs and currently there are not published studies that evaluated their effects on glycemic variability calculated by the widely used methods like mean amplitude of glycemic excursion (MAGE), standard deviation of the mean glycemia (SD), coefficient of variation (CV) and interquartile range (IQR).
The aim of the current study is to compare the effect of gliclazide MR with dapagliflozin on the glycemic variability using a continuous glucose monitoring system (CGMS) to determine MAGE, SD, CV and IQR.
- METHODOLOGY 2.1 Study Population (Target population of Clinical Trial Subjects) A total of 120 patients with documented Type 2 Diabetes will be enrolled, considering an expected screening failure rate of 30% (n=22) and an expected dropout rate of 8% (n=10), based in previous studies conducted in our center using similar populations and period. We estimate that 88 (44 in each group) subjects will complete all protocol procedures. Per-protocol analysis will be restricted to the participants who fulfill the protocol in terms of the eligibility, interventions and outcome assessment. To be as close to a real life scenario as possible, this clinical trial will include subjects patients who were treated with metformin only and had inadequate glycemic control at the time of enrollment as well as treatment naïve or non-medically treated (e.g., diet) patients.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Treatment
- 盲法
- None
入排标准
- 年龄范围
- 40 Years 至 —（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •A. Informed consent form obtained before any study-related activity. Study-related activities are any procedure that would not be performed during the normal treatment of the patient.
- •B. All study subjects must be patients diagnosed with type 2 diabetes based on current guidelines of Brazilian Society of Diabetes and/or American Diabetes Association (ADA) and they should have all the following criteria:
- •Age ≥40 years old.
- •HbA1c ≥7% at randomization.
- •Drug naïve or metformin treated with a stable dose for at least 3 months.
排除标准
- •Acute vascular event (cardiac, cerebral or peripheral) for at least 2 months of randomization.
- •Patient on chronic dialysis and/or renal transplantation and/or serum creatinine >1.5 mg/dL and/or estimated glomerular filtration rate (eGFR) < 45ml/min (MDRD) and/or Creatinine Clearance <60ml/min.
- •Patients with HIV, severe autoimmune disease or chronic treatment with oral steroids (>30 consecutive days).
- •Current or previous treatment with any SGLT-2 inhibitor within 2 months prior to randomization.
- •Current or previous treatment with any type of insulin within 2 months prior to randomization.
- •Current or previous treatment with any sulphonylurea and meglitinide within 2 months prior to randomization.
- •Current or previous treatment with any DPP-4 inhibitor or glucagon-like peptide-1 (GLP-1) receptor agonist within 2 months prior to randomization.
- •Current or previous treatment with acarbose within 2 months prior to randomization.
- •Sustained arterial hypertension ≥160/100mm Hg.
- •Body mass index (BMI) >50 kg/m².
- •HbA1c ≥10.5% at randomization.
- •Transaminases (aspartate aminotransferase and/or alanine aminotransferase) >2.5 x upper limit of normal.
- •Total bilirubin >2.5 x upper limit of normal
- •Chronic liver disease or alcoholic liver disease.
- •LDL-cholesterol >250 mg/dL (>6.48 mmol/L).
- •Triglycerides >1000 mg/dL (>11.3 mmol/L).
- •HDL-cholesterol <25 mg/dL (<0.64 mmol/L).
- •Positive haematuria observed in urine sample obtained in the run-in visit.
- •Prescription of any investigational medication within 3 months before the screening visit.
- •Prescription of any investigational medication within the period between 3 months and one year before the screening visit (visit 1), unless there is a direct benefit to the study subject, at the discretion of the investigator.
- •Pregnant or breastfeeding patients.
- •Previous participation on this study.
- •Individuals at risk for poor adherence to the protocol or medication.
- •Any condition that makes the patient unable to complete the study within 3 months.
研究组 & 干预措施
Dapagliflozin
The active treatment will include a 10 mg dose of dapagliflozin orally once a day.
干预措施: Dapagliflozin (Drug)
Gliclazide MR
As comparator, gliclazide MR will be administered at a dose of 120 mg orally once a day.
干预措施: Gliclazide MR (Drug)
结局指标
主要结局
Glycemic Variability
时间窗: 12 weeks
Glycemic Variability defined by the mean amplitude of glycemic excursion (MAGE) measured by CGMS
次要结局
- Glycemic variability 3(12 weeks)
- Glycemic variability 4(12 weeks)
- Hypoglycemia(12 weeks)
- Glycated hemoglobin A1c (HbA1c) measured as percentage (%)(12 weeks)
- Fasting plasma glucose (FPG) measured by hexokinase method (mg/dL)(12 weeks)
- Postprandial glucose (PPG) measured by hexokinase method (mg/dL)(12 weeks)
- HbA1c ≤6.5% and <7%(12 weeks)
- Glycemic variability 2(12 weeks)