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Completed

NCT Number: NCT00819741

Comparison of the Blood Sugar Lowering Effect Between Repaglinide Plus Metformin and Repaglinide Alone in Type 2 Diabetics Not Previously Treated With Oral Sugar-lowering Drugs

This trial is conducted in Asia. The aim of this clinical trial is to investigate the blood sugar lowering effect of repaglinide plus metformin as initial treatment compared to repaglinide alone in Chinese subjects with type 2 diabetes having an HbA1c (glycosylated haemoglobin A1c) over 8.5 % and who never have taken oral sugar-lowering drugs before. The associated unfavourable events including low blood sugar episodes between the two treatments are also compared.

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Key information

Age range

18 year–75 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Phase 4

Primary location

Novo Nordisk Investigational Site, Fuzhou, Fujian, China

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Who can participate

Healthy volunteers accepted: No

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

Inclusion criteria

  • Diagnosed with type 2 diabetes
  • Never taken oral antidiabetic drugs before
  • HbA1c greater than 8.5 %
  • BMI (Body Mass Index) less than or equal to 35 kg/m^2

Exclusion criteria

  • Known or suspected allergy to repaglinide, metformin, or any of the excipients in the medications
  • Taken an investigational drug in another clinical trial within 4 weeks prior to this trial
  • Impaired liver function, defined as ASAT (aspartate aminotransferase) or ALAT (alanine aminotransferase) equal to or greater than 2 times upper normal limit
  • Have a clinically significant, active disease of the gastrointestinal, pulmonary, neurological, renal, genitourinary, and haematological systems
  • Severe uncontrolled or untreated hypertension (sitting diastolic blood pressure (BP) equal to or greater than 100 mmHg or systolic BP equal to or greater than 180 mmHg)
  • Impaired renal function
  • Acute or chronic acidosis or if there are plans to have a radiographic material containing iodine
  • Have a clinically significant, active cardiovascular disease, or decompensated heart failure
  • Treatment with systemic corticosteroids within the past two months prior to screening

Treatment and study plan

repaglinide

Drug

The dose was started from repaglinide 1 mg plus metformin 500 mg once daily. During the dose titration period, the dose could be titrated up to repaglinide 4 mg and metformin 500mg three times daily, according to fasting glucose. the minimal dose was repaglinide 1 mg plus metformin 500 mg three times daily

metformin

Drug

The dose was started from repaglinide 1 mg plus metformin 500 mg once daily. During the dose titration period, the dose could be titrated up to repaglinide 4 mg and metformin 500 mg three times daily, according to fasting glucose. the minimal dose was repaglinide 1 mg plus metformin 500 mg three times daily

Primary outcomes

  1. Change in Glycosylated Haemoglobin A1c (HbA1c)

    Time frame: week -2 (screening), week 16

    Calculated as an estimate of the mean change in HbA1c after 16 weeks of treatment.

Secondary outcomes

  1. Change in Fasting Plasma Glucose

    Time frame: week 0, week 16

    Calculated as an estimate of the mean change in fasting plasma glucose after 16 weeks of treatment.

  2. Change in 2-hour Postprandial Plasma Glucose

    Time frame: Week 0, week 16

    Calculated as an estimate of the mean change in 2-hour postprandial plasma glucose following a standard test meal after 16 weeks of treatment

  3. Change in 7-point Plasma Glucose Profile

    Time frame: Week 0, week 16

    Calculated as an estimate of the mean change in 7-point (before breakfast, 2 hours after breakfast, before lunch, 2 hours after lunch, before dinner, 2 hours after dinner, bedtime) plasma glucose profile after 16 weeks of treatment.

  4. Change in Fasting Serum Insulin

    Time frame: Week 0, week 16

    Calculated as an estimate of the mean change in fasting serum insulin after 16 weeks of treatment.

  5. Change in 2-hour Postprandial Serum Insulin

    Time frame: Week 0, week 16

    Calculated as an estimate of the mean change in 2-hour postprandial serum insulin after 16 weeks of treatment.

  6. Change in Fasting Serum C-peptide

    Time frame: Week 0, week 16

    Calculated as an estimate of the mean change in fasting serum C-peptide after 16 weeks of treatment

  7. Change in 2-hour Postprandial Serum C-peptide

    Time frame: Week 0, week 16

    Calculated as an estimate of the mean change in 2-hour postprandial serum C-peptide after 16 weeks of treatment

  8. Hypoglycaemic Episodes

    Time frame: Weeks 0-16

    Number of hypoglycaemic episodes from Week 0 to Week 16, defined as major, minor or symptoms only. Major if unable to treat her/himself. Minor if able to treat her/himself and plasma glucose below 3.1 mmol/L. Symptoms only if able to treat her/himself and no plasma glucose measurement or plasma glucose higher than or equal to 3.1 mmol/L.

  9. Change in Blood Pressure

    Time frame: Week 0, week 16

    Calculated as the mean change in diastolic and systolic blood pressure after 16 weeks of treatment

  10. Physical Examinations

    Time frame: Week -2, week 16

    The number of subjects having a physical examination event that changed from 'Normal' or 'Abnormal, not clinically significant' to 'Abnormal, clinically significant'. Physical examination included cardiovascular system, respiratory system, musculoskeletal system, nervous system and abdomen.

  11. ECG (ElectroCardioGram)

    Time frame: Week -2, week 16

    The number of subjects having a electrocardiogram (ECG) that changed from 'Normal' or 'Abnormal, not clinically significant' to 'Abnormal, clinically significant'. 'Abnormal, Clinically significant' is an abnormality that suggests a disease and/or organ toxicity and is of a severity, which requires active management.

  12. Biochemistry: Alanine Aminotransferase (ALAT)

    Time frame: Week -2, week 16

    The number of subjects having a change in Alanine Aminotransferase (ALAT) from 'Normal' or 'Abnormal, not clinically significant' to 'Abnormal, clinically significant'. 'Abnormal, Clinically significant' is an abnormality that suggests a disease and/or organ toxicity and is of a severity, which requires active management.

  13. Biochemistry: Alanine Aminotransferase (ASAT)

    Time frame: Week -2, week 16

    The number of subjects having a change in Aspartate Aminotransferase (ASAT) from 'Normal' or 'Abnormal, not clinically significant' to 'Abnormal, clinically significant'. 'Abnormal, Clinically significant' is an abnormality that suggests a disease and/or organ toxicity and is of a severity, which requires active management.

  14. Haematology: Haemoglobin

    Time frame: Week -2, week 16

    Haemoglobin was measured. The number of subjects having a change in Haemoglobin measurement from 'Normal' or 'Abnormal, not clinically significant' to 'Abnormal, clinically significant' 'Abnormal, Clinically significant' is an abnormality that suggests a disease and/or organ toxicity and is of a severity, which requires active management.

Sponsors and collaborators

Lead sponsor

Novo Nordisk A/S

Industry

Registry information

Official study title

A 16-week, Open-label, Multicentre, Randomised, Parallel Study to Evaluate Efficacy and Safety of Repaglinide and Metformin Combination Therapy Compared to Repaglinide Monotherapy in Chinese OAD Naive Type 2 Diabetic Patients

Important dates

Study start
2009
Primary completion
2009
Study completion
2009
First posted
Jan 9, 2009
Registry last updated
Feb 10, 2017

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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