Efficacy of Colesevelam in Subjects With Type 1 Diabetes Mellitus
Diabetes Mellitus, Type 1
Drug: Colesevelam HCl
|Study Design:||Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Double Blind (Subject, Investigator)
Primary Purpose: Treatment
|Official Title:||Efficacy of Colesevelam in Subjects With Type 1 Diabetes Mellitus|
- To demonstrate a 10% LDL reduction in type 1 diabetic subjects with initial LDL > 100 after twelve weeks in the colesevelam group. [ Time Frame: 12 weeks of treatment ]
- To evaluate colesevelam use for glucose control as measured by A1c using a 0.4% confidence interval at baseline and after one, two, and three months of therapy. [ Time Frame: 12 weeks of treatment. ]
- To evaluate colesevelam use for non-inferiority of percent of target range glucose values and time spent in hyper- and hypoglycemic ranges as determined by CGM readings at baseline and after one, two, and three months of therapy. [ Time Frame: 12 weeks of treatment. ]
- In addition change in insulin dose at one, two and three months from baseline will be evaluated. [ Time Frame: 12 weeks of treatment ]
|Study Start Date:||July 2009|
|Study Completion Date:||December 2009|
|Primary Completion Date:||December 2009 (Final data collection date for primary outcome measure)|
Experimental: Colesevelam HCl
Beginning at Visit 1, two weeks after screening, subjects in the active treatment group will take 3.75 gms/day of colesevelam HCl in the form of three 625 mg tablets with lunch and dinner or six 625mg tablets once daily with dinner.
Drug: Colesevelam HCl
3.75 gms/day of colesevelam HCl in the form of three 625 mg tablets with lunch and dinner or six 625mg tablets once daily with dinner.
Placebo Comparator: Comparison group
Beginning at Visit 1, two weeks after screening, subjects in the comparison group will be administered placebo, taking 3.75 gms/day of colesevelam HCl in the form of three 625 mg tablets with lunch and dinner or six 625mg tablets once daily with dinner.
Placebo: 3.75 gms/day in the form of three 625 mg tablets with lunch and dinner or six 625mg tablets once daily with dinner.
This is a prospective, randomized, double blind, parallel, placebo controlled clinical trial evaluating the efficacy of colesevelam HCl in reducing LDL in subjects with type 1 diabetes mellitus over a 12 week treatment period. Colesevelam is an orally administered bile acid sequestrant approved as an adjunct for diet and exercise for lowering incidence of hyperlipidemia, an important risk factor for long term cardiovascular health in the general population and people living with diabetes. Use of colesevelam has been shown to concurrently decrease low density lipoprotein cholesterol (LDL-C) and A1c in patients with type 2 diabetes. The exact mechanism is unknown. Our research aims to highlight the effect of colesevelam on LDL and glycemia in a type 1 diabetic population.
This single-center study will enroll a maximum of 40 patients with LDL-C > 100 and A1c values between 6.5-9%, who will be randomized in a 1:1 fashion to either the study drug or placebo. Visits will be conducted at screening, baseline, one month, two months, and three months. At home, subjects will take 3.75 gms/day of colesevelam HCl or placebo throughout the study duration. Laboratory analysis will be performed at various timepoints assessing A1c, fasting lipid panel, c-peptide, glucagon-like-peptide-1 (GLP-1), and glucose-dependent insulinotropic peptide (GIP). Continuous glucose monitoring (CGM) measurements will be obtained on all patients for one week before each monthly visit to assess for above target range (ATR), within target range (WTR), and below target range (BTR) glucose values and time spent in hyperglycemic and hypoglycemic excursions.
The colesevelam group is anticipated to demonstrate a mean reduction in LDL by 10% compared to the placebo group.
Please refer to this study by its ClinicalTrials.gov identifier: NCT00938405
|United States, Colorado|
|Barbara Davis Center for Diabetes|
|Aurora, Colorado, United States, 80045|
|Principal Investigator:||Satish K Garg, MD||University of Colorado Denver/ Barbara Davis Center for Diabetes|