Sitagliptin in Cystic Fibrosis-Related Diabetes

This study has been terminated.
(Lack of recruitment)
Information provided by (Responsible Party):
University of British Columbia Identifier:
First received: December 2, 2010
Last updated: March 5, 2014
Last verified: March 2014

The purpose of this study is to determine whether the dipeptidyl peptidase IV (DPPIV) inhibitor sitagliptin is effective in the treatment of cystic fibrosis-related diabetes (CFRD). We hypothesize that sitagliptin will improve meal-stimulated insulin secretion.

Condition Intervention Phase
Cystic Fibrosis
Drug: Sitagliptin
Drug: Placebo
Phase 2

Study Type: Interventional
Study Design: Allocation: Randomized
Endpoint Classification: Safety/Efficacy Study
Intervention Model: Crossover Assignment
Masking: Double Blind (Subject, Investigator)
Primary Purpose: Treatment
Official Title: The Effects of the DPPIV Inhibitor Sitagliptin in Cystic Fibrosis-related Diabetes

Resource links provided by NLM:

Further study details as provided by University of British Columbia:

Primary Outcome Measures:
  • Insulin release [ Time Frame: 180 minutes (during clamp) ] [ Designated as safety issue: No ]
    The study protocol is a iv-oral hyperglycemic glucose clamp. We will assess insulin release during the clamp, comparing placebo to sitagliptin.

Secondary Outcome Measures:
  • Incretin Response [ Time Frame: 180 minutes (during clamp) ] [ Designated as safety issue: No ]
    We will assess incretin release [glucoagon-like peptide-1 (GLP-1), gastric inhibitory polypeptide(GIP)] during the glucose clamp.

Enrollment: 3
Study Start Date: September 2010
Study Completion Date: June 2012
Primary Completion Date: June 2012 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Active Comparator: Sitagliptin Drug: Sitagliptin
100mg po one dose
Other Name: Januvia, MK-0431, Dipeptidyl peptidase IV inhibitor (DPP-4 inhibitor)
Placebo Comparator: Placebo Drug: Placebo
Sugar pill po one dose

Detailed Description:

To date, no clinical trials have been conducted using the DPPIV inhibitor sitagliptin in cystic fibrosis-related diabetes. Cystic fibrosis-related diabetes is characterized initially by post-prandial hyperglycemia, with normal fasting sugars. As the disease progresses, fasting hyperglycemia develops. As sitagliptin augments post-prandial insulin release, while avoiding fasting hypoglycemia, it may be an alternative therapy for cystic fibrosis-related diabetes in individuals who do not yet require basal insulin therapy.


Ages Eligible for Study:   19 Years and older
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • 19 years of age or older
  • Cystic fibrosis-related diabetes with or without fasting hyperglycemia either untreated or using only pre-prandial repaglinide or pre-prandial bolus insulin therapy

Exclusion Criteria:

  • Age under 19 years
  • Use of basal insulin therapy
  • Creatinine Clearance < 50 mL/min
  • Active cystic fibrosis exacerbation
  • Pregnancy
  • Women of child-bearing age not using effective contraception
  • Current or prior use of DPPIV inhibitor
  Contacts and Locations
Please refer to this study by its identifier: NCT01257464

Canada, British Columbia
University of British Columbia Gerontology & Diabetes Reserach Centre (ViTALITY)
Vancouver, British Columbia, Canada, V5Z 1L8
Sponsors and Collaborators
University of British Columbia
Principal Investigator: Graydon Meneilly, MD University of British Columbia
  More Information

No publications provided

Responsible Party: University of British Columbia Identifier: NCT01257464     History of Changes
Other Study ID Numbers: H08-02131
Study First Received: December 2, 2010
Last Updated: March 5, 2014
Health Authority: Canada: Health Canada

Keywords provided by University of British Columbia:
cystic fibrosis-related diabetes

Additional relevant MeSH terms:
Cystic Fibrosis
Pancreatic Diseases
Digestive System Diseases
Lung Diseases
Respiratory Tract Diseases
Genetic Diseases, Inborn
Infant, Newborn, Diseases
Pathologic Processes
Dipeptidyl-Peptidase IV Inhibitors
Protease Inhibitors
Enzyme Inhibitors
Molecular Mechanisms of Pharmacological Action
Pharmacologic Actions
Hypoglycemic Agents
Physiological Effects of Drugs processed this record on April 17, 2014