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Completed

NCT Number: NCT00807092

Comparing the Efficacy and Safety of Biphasic Insulin Aspart 30 and Biphasic Human Insulin 30 on Blood Sugar Control in Subjects With Type 2 Diabetes

This trial is conducted in Asia. The aim of this clinical trial is to investigate the blood sugar lowering effect and the safety profile of biphasic insulin aspart 30 compared to biphasic human insulin 30, both in combination with metformin in Chinese insulin-naive subjects with type 2 diabetes when failing on oral antidiabetic drug (OAD) therapy.

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Key information

Age range

18 year–80 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Phase 4

Primary location

Beijing, Beijing Municipality, 100730, China

Who can participate

Healthy volunteers accepted: No

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

Inclusion criteria

  • Type 2 diabetes diagnosed for at least 6 months
  • Insulin-naive (less than or equal to 1 week of daily use of insulin therapy)
  • Treatment with metformin as monotherapy or in combination therapy with other OAD(s) for at least 3 months prior to this trial
  • Currently on metformin greater than or equal to 1000 mg/day for at least 2 weeks
  • Currently at least one of other OAD(s) reaching at least one-half of the recommended maximum dose for at least 2 weeks
  • Glycosylated haemoglobin (HbA1c) between 7.5-11.0%
  • Body Mass Index (BMI) between 18.5 - 35.0 kg/m^2
  • Be able and willing to perform continuous glucose monitoring system (CGMS ) and self-monitored blood glucose (SMBG)

Exclusion criteria

  • Known or suspected allergy to trial product(s) or related products
  • Any contraindication of metformin
  • Receipt of investigational drug within the last 3 months prior to this trial
  • Any history of chronic insulin therapy (more than 1 week of daily use)
  • Systemically treated with thiazolidinediones (TZDs) for more than one month within 6 months prior to this trial
  • Pregnancy, nursing mother, or unwillingness to use adequate contraception

Treatment and study plan

biphasic insulin aspart 30

Drug

The initial doses for BIAsp 30 twice-daily regimen will be recommended to start at a total daily dose of 0.3 U/kg body weight and to be equally divided (1/2:1/2) between pre-breakfast and pre-dinner

biphasic human insulin 30

Drug

The initial doses for BHI 30 twice-daily regimen will be recommended to start at a total daily dose of 0.3 IU/kg body weight and to be divided in the ratio of 2/3:1/3 between pre-breakfast and pre-dinner

metformin

Drug

Metformin dose must remain the same as that used prior to the trial.

Primary outcomes

  1. Change in IAUC (Incremental Area Under the Curve) for Postprandial Glucose (0-4 Hours) Over 3 Main Meals

    Time frame: Week 0, week 6

    The blood glucose profiles were monitored by CGMS (Continuous Glucose Monitoring System) for 72 hours at baseline (week 0) and end of treatment (week 6). IAUC was calculated using the trapezoidal method. The arithmetic mean of IAUC (3 meal-specific incremental areas) of day 1 and day 2 was used as the value of IAUC for each CGMS period

Secondary outcomes

  1. Change in Mean IAUC for Postprandial Glucose (0-4 Hours) After Each Meal (Breakfast, Lunch, Dinner) Assessed by CGMS

    Time frame: Week 0, Week 6

    The blood glucose profiles were monitored by CGMS for 72 hours at baseline (week 0) and end of treatment (week 6). IAUC (0-4 hours) after each meal at 6 weeks and change in IAUC (0-4 hours) from baseline (week 0) after each meal were to be assessed. The arithmetic mean of day 1 and day 2 for each meal-specific incremental area (breakfast, lunch, dinner) was calculated.

  2. Mean FBG (Fasting Blood Glucose) Assessed by CGMS

    Time frame: Week 6

    The blood glucose profiles were monitored by CGMS for 72 hours at end of treatment (week 6). Mean FBG assessed by CGMS at 6 weeks. FBG was read on the CGMS glucose curves at 06:00 each morning over the 72 hours. The arithmetic mean of day 1 and day 2 was used as the value of mean FBG for each CGMS period.

  3. Change in Mean FBG Assessed by CGMS

    Time frame: Week 0, week 6

    The blood glucose profiles were monitored by CGMS for 72 hours at baseline (week 0) and at end of treatment (week 6). Change in mean FBG from baseline (week 0) was assessed. FBG was read on the CGMS glucose curves at 06:00 each morning over the 72 hours. The arithmetic mean of day 1 and day 2 was used as the value of mean FBG for each CGMS period.

  4. Change in FPG (Fasting Plasma Glucose)

    Time frame: Week 0, Week 6

    FPG was analysed by local laboratories at baseline (week 0) and end of treatment (week 6). Change in FPG at end of treatment (week 6) from baseline (week 0) was to be assessed.

  5. Change in 8-point SMBG (Self-monitored Blood Glucose) Profiles

    Time frame: Week 0, Week 6

    Subjects were asked to perform 8-point SMBG profiles using the provided blood glucose meter on one day within 72 hours CGMS monitoring period at week 0 and week 6. Change in blood glucose level at end of treatment (week 6) from baseline (week 0) at each time point was to be assessed respectively. Blood glucose levels were measured at the following 8 time points: Before each meal (breakfast, lunch and dinner), 120 minutes after the start of each meal, at bedtime and at 3 am in the morning.

  6. Change in Prandial Blood Glucose Increment

    Time frame: Week 0, Week 6

    Subjects were asked to perform 8-point SMBG profiles using the provided blood glucose meter on one day within 72 hours CGMS monitoring period at week 0 and week 6 respectively. Prandial increment was the difference between the blood glucose (BG) value measured 120 minutes after meal and the BG value measured before meal.

  7. Change in MAGE (Mean Amplitude of Glycaemic Excursions) Assessed by CGMS

    Time frame: Week 0, Week 6

    MAGE is a parameter to monitor the intraday blood glucose excursions. It was calculated using CGMS data and as the arithmetic mean of glycaemic excursion with the criterion that both segments (ascending and descending parts) of the glycaemic excursion exceed of the value of one standard deviation of respective 24-hour blood glucose value. The direction of calculation (peak-to-nadir or nadir-to-peak) was established by the direction of the first excursion. The arithmetic mean of the glycaemic excursion of day 1 and day 2 was the value of MAGE for each CGMS

  8. Change in GA (Glycated Albumin)

    Time frame: Week -2, week 6

    Glycated Albumin is used as a general glycaemic control parameter. Analysed by laboratory. GA was measured at baseline (week 0) and end of treatment (week 6). Change in GA at end of treatment (week 6) from baseline (week 0) was assessed.

  9. Change in Glycosylated Haemoglobin (HbA1c)

    Time frame: Week -2, week 6

  10. Duration of Hypoglycaemic Events Based on CGMS

    Time frame: 72-hour monitoring period at Week 0 and Week 6

    The CGMS device recorded blood glucose levels every 10 seconds then stored a smoothed average over 5 minutes. The range of blood glucose detection was 2.2-22 mmol/l. Hypoglycaemia was defined as blood glucose readings below 3.5 mmol/l or below 2.5 mmol/l, respectively. The duration of the hypoglycaemic episodes was quantified by accumulating the total time the CGMS profiles stays below the defined threshold (i.e. below 3.5 mmol/l or below 2.5 mmol/l, respectively).

  11. Hypoglycaemia Based on Self-reported Episodes

    Time frame: Weeks 0-6

    Total number of hypoglycaemic episodes occurring in the trial after baseline (week 0) until the end of treatment (week 6). Hypoglycaemic episodes are classified as major, minor or symptoms only: Major if the subject was unable to treat her/himself; minor if subject was able to treat her/himself and self monitored blood glucose (SMBG) was below 2.8 mmol/L; symptoms only if subject was able to treat her/himself and with no blood glucose measurement or SMBG higher than or equal to 2.8 mmol/L.

Sponsors and collaborators

Lead sponsor

Novo Nordisk A/S

Industry

Registry information

Official study title

Comparison of the Efficacy on Glycaemic Control and Safety Profile of Biphasic Insulin Aspart 30 and Biphasic Human Insulin 30 Both in Combination With Metformin in Insulin-naïve Subjects With Type 2 Diabetes Mellitus Inadequately Controlled on Oral Antidiabetic Drugs (OADs) Therapy

Important dates

Study start
2008
Primary completion
2009
Study completion
2009
First posted
Dec 11, 2008
Registry last updated
Mar 4, 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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