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Completed

NCT Number: NCT00885352

Sitagliptin (MK-0431) vs. Placebo in Patients With Inadequate Glycemic Control on Metformin With Pioglitazone (MK-0431-128)

This study will examine the safety and efficacy of the addition of sitagliptin (MK-0431) compared to placebo in patients with type 2 diabetes mellitus with inadequate glycemic control who are taking pioglitazone and metformin.

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Key information

Conditions

Type 2 Diabetes Mellitus Diabetes Mellitus Diabetes Mellitus, Type 2 Endocrine System Diseases Glucose Metabolism Disorders Metabolic Diseases Nutritional and Metabolic Diseases

Age range

18 year–78 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Phase 3

Who can participate

Healthy volunteers accepted: No

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

Inclusion criteria

  • has type 2 diabetes and is at least 18 years of age and no older than 78 years of age
  • is male or is a female who is unlikely to conceive children
  • is on stable doses of a peroxisome proliferator-activated receptor gamma agonist and metformin OR metformin and a sulfonylurea agent

Exclusion criteria

  • has type 1 diabetes
  • has taken a dipeptidyl peptidase (DPP-4) inhibitor or a glucagon-like peptide-1 (GLP-1) analogue
  • is on a weight loss program that is not in the maintenance phase or has started a weight loss medication within 8 weeks of screening
  • has had surgery within 30 days of screening or has major surgery planned during the study
  • is on or is likely to require treatment with corticosteroids for more than 2 weeks
  • has a history of active liver disease, including hepatitis B or C, cirrhosis, or gallbladder disease
  • is human immunodeficiency virus (HIV) positive
  • has congestive heart failure, or has had new or worsening symptoms of coronary heart disease within 3 months prior to screening
  • has had acute coronary syndrome, coronary artery intervention, or stroke within 3 months of screening
  • has severe active peripheral vascular disease
  • has a history of cancer or blood disorder
  • is pregnant or breast feeding

Treatment and study plan

Sitagliptin

Drug

Sitagliptin 100 mg tablet orally once daily for 26 weeks.

Other names: Januvia, MK-0431

Comparator: placebo

Drug

Placebo to sitagliptin 100 mg tablet orally once daily for 26 weeks.

pioglitazone

Drug

Participants taking 30 mg or more pioglitazone oral tablet(s) daily at screening in combination with metformin will enter a 4-week dose-stable period followed by a 2-week single-blind run-in and a 26-week treatment period. Participants taking 4 mg or more rosiglitazone oral tablet(s) daily at screening in combination with metformin were to be switched to a corresponding dose of pioglitazone prior to starting a 4-week dose-stable period. Participants who are taking less than 30 mg/day or no pioglitazone at screening will be titrated to a stable dose of at least 30 mg pioglitazone once daily over a maximum of 4 weeks followed by a dose-stable period of 10 weeks, a 2-week single-blind placebo run-in, and a 26-week treatment period. Total treatment with pioglitazone will be up to 42 weeks.

Other names: Actos

metformin

Drug

Participants taking 1500 mg or more metformin oral tablet(s) and at least 30 mg pioglitazone or 4 mg rosiglitazone daily at screening will enter a 4-week dose-stable period followed by a 2-week single-blind placebo run-in, and a 26-week treatment period. Participants who are taking less than 1500 mg/day metformin at screening will be titrated to a stable dose of at least 1500 mg metformin once daily over a maximum of 4 weeks followed by a dose-stable period of 10 weeks, a 2-week single-blind placebo run-in, and a 26-week treatment period. Total treatment with metformin will be up to 42 weeks.

Other names: Glucophage

Glipizide

Drug

Participants not meeting specific glycemic controls during the 26-week treatment period will use glipizide oral tablets as rescue therapy. In countries where glipizide is not available, participants will receive a sulfonylurea marketed in that country.

Other names: Glucotrol

Primary outcomes

  1. Change From Baseline in Hemoglobin A1c (A1C) at Week 26

    Time frame: Baseline and Week 26

    Change from baseline reflects the Week 26 value minus the baseline value. A1C represents the percentage of glycosylated hemoglobin.

Secondary outcomes

  1. Change From Baseline in 2-Hour Post-Meal Glucose (PMG) at Week 26

    Time frame: Baseline and Week 26

    Change from baseline reflects the Week 26 value minus the baseline value.

  2. Change From Baseline in Fasting Plasma Glucose (FPG) at Week 26

    Time frame: Baseline and Week 26

    Change from baseline reflects the Week 26 value minus the baseline value.

Sponsors and collaborators

Lead sponsor

Merck Sharp & Dohme LLC

Industry

Registry information

Official study title

A Phase III Randomized, Placebo-Controlled Clinical Trial to Study the Safety and Efficacy of the Addition of Sitagliptin (MK-0431) in Patients With Type 2 Diabetes Mellitus Who Have Inadequate Glycemic Control on Combination Therapy With Metformin and Pioglitazone

Important dates

Study start
2009
Primary completion
2010
Study completion
2010
First posted
Apr 21, 2009
Registry last updated
May 23, 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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