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A Phase III, Multicenter, Randomized, Double-Blind Clinical Trial to Study the Safety and Efficacy of the Addition of Sitagliptin (MK-0431) to Patients with Type 2 Diabetes Mellitus Who Have Inadequate Glycemic Control on Insulin Therapy (Alone or In Combination with Metformin)

A Phase III, Multicenter, Randomized, Double-Blind Clinical Trial to Study the Safety and Efficacy of the Addition of Sitagliptin (MK-0431) to Patients with Type 2 Diabetes Mellitus Who Have Inadequate Glycemic Control on Insulin Therapy (Alone or In Combination with Metformin)

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
EU CTR
Registry ID
EUCTR2006-005051-15-HU
Enrollment
600
Registered
2006-11-09
Start date
2007-01-15
Completion date
Unknown
Last updated
2012-03-19

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

type II Diabetes mellitus MedDRA version: 8.1 Level: LLT Classification code 10045242 Term: Type II diabetes mellitus

Interventions

Product Name: sitagliptin Product Code: MK-0431 Pharmaceutical Form: Tablet INN or Proposed INN: sitagliptin Other descriptive name: MK-0431 Concentration unit: mg milligram(s) Concentration type: equ

Sponsors

Merck & Co., Inc.
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: a. Patient has type 2 diabetes mellitus (T2DM), as indicated by a "yes" to one of the following criteria: (1) Patient was diagnosed with diabetes after age 40 years and insulin therapy was initiated at least 3 years after the diagnosis of diabetes (2) Patient does not meet criteria in a.(1) above (i.e., diagnosis 0.7 ng/mL Note: only patients who do not meet criteria a.(1) should have a C-peptide level measured Are the trial subjects under 18? no Number of subjects for this age range: F.1.2 Adults (18-64 years) yes F.1.2.1 Number of subjects for this age range F.1.3 Elderly (>=65 years) yes F.1.3.1 Number of subjects for this age range

Exclusion criteria

Exclusion criteria: Glucose Metabolism and Therapy Criteria a. Patient has a history of type 1 diabetes mellitus or a history of ketoacidosis. b. Patient has been treated with a sulfonylurea, meglitinide, alpha glucosidase inhibitor within the past 2 months, or a thiazolidinedione (TZD) PPAR? agent within the past 3 months. c. Patient has been treated with exenatide within the past 3 months. d. Patient is currently on treatment with daily use (one or more injections per day) of a pre-prandial short-acting or rapid-acting insulin (e.g., aspart, glulisine, lispro, or regular insulin). Note: patients using a pre-mixed insulin including a short-acting insulin may participate; patients who occasionally (< 3 times per week) use a short-acting insulin may participate. e. Patient has a history of 2 or more episodes of hypoglycemia resulting in seizure, coma, or loss of consciousness, - or - patient has had recurrent (=3 times per week) episodes of hypoglycemia over the past 8 weeks.

Design outcomes

Primary

MeasureTime frame
Main Objective: In patients with type 2 diabetes mellitus (T2DM) and who have inadequate glycemic control (HbA1c =7.5% and < 11%) on insulin (alone or in combination with metformin): Objective: After 24 weeks, to assess the effect of the addition of treatment with sitagliptin compared with the addition of placebo on HbA1c level. Hypothesis: After 24 weeks, the addition of treatment with sitagliptin compared with placebo results in a greater reduction in HbA1c. Objective: To assess the safety and tolerability of sitagliptin Hypothesis: Sitagliptin is well tolerated.;Primary end point(s): HbA1c ;Secondary Objective: In patients with type 2 diabetes mellitus (T2DM) and who have inadequate glycemic control (HbA1c =7.5% and < 11%) on insulin (alone or in combination with metformin): Objective: After 24 weeks, to assess the effect of the addition of treatment with sitagliptin compared with placebo on (1) HbA1c level in the sub-population of patients on a long-acting or intermediateacting insulin (alone or in combination with metformin). (2) Fasting plasma glucose (FPG) (3) Glycemic response after a meal (e.g., 2-hour post-prandial glucose (PPG) and glucose excursion after a standard meal) (4) In the subset of patients who have a frequently sampled meal tolerance test, parameters describing pancreatic beta-cell function (e.g., static and dynamic glucose sensitivity) (5) The proportion of patients achieving an HbA1c <7.0% (6) The proportion of patients achieving an HbA1c <6.5% (7) Weight

Countries

Austria, Bulgaria, Denmark, Finland, France, Hungary, Ireland, Italy, Portugal

Outcome results

None listed

Source: EU CTR (via WHO ICTRP) · Data processed: Feb 4, 2026