Effects of Sitagliptin on Type 2 Diabetes Mellitus Patients on Treatment With Metformin and Insulin

Overview[ - collapse ][ - ]

Purpose The purpose of the study is to determine the efficacy and safety of sitaglipin in the treatment of Type 2 diabetes mellitus (T2DM) patients with inadequate glycemic control using metformin and insulin.
ConditionDiabetes Mellitus, Type 2
InterventionDrug: Sitagliptin
Drug: Glimepiride
Drug: Metformin
Drug: Insulin
PhasePhase 4
SponsorJothydev's Diabetes and Research Centre
Responsible PartyJothydev's Diabetes and Research Centre
ClinicalTrials.gov IdentifierNCT01341717
First ReceivedApril 23, 2011
Last UpdatedNovember 8, 2013
Last verifiedNovember 2013

Tracking Information[ + expand ][ + ]

First Received DateApril 23, 2011
Last Updated DateNovember 8, 2013
Start DateFebruary 2012
Estimated Primary Completion DateMay 2014
Current Primary Outcome MeasuresReduction in HbA1c from baseline [Time Frame: six months] [Designated as safety issue: No]To confirm the efficacy of metformin+ insulin+ sitagliptin in controlling glycemia with respect to change from baseline in HbA1c after 24 weeks of administration. This will be accomplished by comparing the difference in change from baseline in HbA1c after 24 weeks of administration, compared with metformin+insulin+glimepiride to a non-inferiority limit of 0.3% , and if non-inferiority is proven, to a superiority limit of 0%.
Current Secondary Outcome Measures
  • Change in total daily dose (TDD) of insulin [Time Frame: 6 months] [Designated as safety issue: No]Change from baseline in insulin TDD (30-day geometric mean) at Month 6
  • Episodes of hypoglycemia [Time Frame: 6 months] [Designated as safety issue: Yes]Hypoglycemia (Total, severe, nocturnal) (From Month 0 to Month 6), as assessed by questionnaire and supplemented by SMBG values, if available
  • Proportion of patients with HbA1c reduction [Time Frame: 6 months] [Designated as safety issue: No]Proportion of patients, who completed treatment , with HbA1c value <6.5% & ≤7.3% at end of study (Month 6)
  • change in weight and BMI [Time Frame: 6 months] [Designated as safety issue: No]
  • Change in both HbA1c and TDD [Time Frame: 6 months] [Designated as safety issue: No]Proportion of patients achieving both HbA1c ≤6.5% AND reduction in TDD (total daily dose of insulin)
  • Change in insulin resistance and beta cell function [Time Frame: 6 months] [Designated as safety issue: No]Change from baseline in c-peptide levels, homeostasis model assessments of β-cell function and insulin resistance (HOMA-β and HOMA-IR)
  • Change in lipid profile from baseline [Time Frame: 6 months] [Designated as safety issue: No]

Descriptive Information[ + expand ][ + ]

Brief TitleEffects of Sitagliptin on Type 2 Diabetes Mellitus Patients on Treatment With Metformin and Insulin
Official TitleOpen-labelled, Randomized, Active-controlled, Parallel-arm, Single-center Study on Effect of Sitagliptin on T2DM Patients on Treatment With Metformin and Insulin
Brief Summary
The purpose of the study is to determine the efficacy and safety of sitaglipin in the
treatment of Type 2 diabetes mellitus (T2DM) patients with inadequate glycemic control using
metformin and insulin.
Detailed Description
DPP-4 inhibitors enhance function of endogenous incretin that helps with glucose
homoeostasis. DPP-4 inhibitors have been proved to promote glycemic control without
increasing risk of hypoglycemia and weight gain. In addition, they may improve beta-cell
function and do not have any known associations with overt cardiovascular or hepatic safety
risks.

Addition of sitagliptin to treatment of T2DM patients poorly controlled on insulin +/-
metformin has been shown to reduce HbA1c while being generally well-tolerated.

It could be clinically useful to add sitaglipin to treatment regimen of T2DM patients on
stable therapy with insulin & metformin. Apart from glycemic reduction, secondary effects
like prevention of weight gain, reduction in insulin dose, improved cardiovascular risk
profile, etc. may be expected from addition of sitagliptin to treatment.
Study TypeInterventional
Study PhasePhase 4
Study DesignAllocation: Randomized, Endpoint Classification: Efficacy Study, Intervention Model: Parallel Assignment, Masking: Open Label, Primary Purpose: Treatment
ConditionDiabetes Mellitus, Type 2
InterventionDrug: Sitagliptin
100 mg once daily for 6 months
Drug: Glimepiride
1 mg/2 mg/3 mg once daily
Drug: Metformin
>=1000 mg twice daily
Drug: Insulin
TDD > 10 IU once/twice daily
Study Arm (s)
  • Experimental: Sitagliptin along with metformin and insulin
  • Active Comparator: Glimepiride as an active comparator to Sitagliptin

Recruitment Information[ + expand ][ + ]

Recruitment StatusActive, not recruiting
Estimated Enrollment440
Estimated Completion DateMay 2014
Estimated Primary Completion DateMay 2014
Eligibility Criteria
Inclusion Criteria:

- T2DM patients on metformin and biphasic or basal regimens of insulin

- HbA1c ≥7.3% to ≤8.5%

- Age: 25 to 60 yrs

- Insulin TDD > 10 IU

Exclusion Criteria:

- Use of acarbose, pioglitazone or short-acting insulin analogues at time of run-in
phase

- History of type 1 diabetes mellitus

- Creatinine clearance ≤50 mL/min

- Chronic liver & kidney diseases, SGOT/PT≥2.5x upper limit of normal, uncontrolled
thyroid disorders , cardiac failure, hemochromatosis, autoimmune disorders,
corticosteroid intake.

- BMI >40 kg/m2
GenderBoth
Ages25 Years
Accepts Healthy VolunteersNo
ContactsNot Provided
Location CountriesIndia

Administrative Information[ + expand ][ + ]

NCT Number NCT01341717
Other Study ID NumbersJDC/SITA/021/2011
Has Data Monitoring CommitteeYes
Information Provided ByJothydev's Diabetes and Research Centre
Study SponsorJothydev's Diabetes and Research Centre
CollaboratorsNot Provided
Investigators Principal Investigator: Jothydev Kesavadev, MD Jothydev's Diabetes and Research Center
Verification DateNovember 2013

Locations[ + expand ][ + ]

Jothydev's Diabetes and Research Center
Thiruvananthapuram, Kerala, India, 695032