Effect of Januvia on Beta Cell Function in Patients With Diabetes Mellitus
- Conditions
- Diabetes Mellitus Type 2
- Registration Number
- NCT00425490
- Lead Sponsor
- Sheba Medical Center
- Brief Summary
The study is designed to investigate the effect of 18 weeks treatment with Sitagliptin 100 mg/day on the insulin secretion capacity of beta cells.
Patients who meet the study enrollment criteria will undergo 2 experiments (see description below); a graded hyperglycemic technique and a meal test, prior to randomization and after a 12-wk double-blind study period. The treatment effect will shed light on the magnitude of the beta cell capacity to increase its mass and function.
- Detailed Description
Study design and duration: This will be an Israeli three center study. Study drug: Sitagliptin 100 mg. The study will be a double blind, randomized two arms parallel group study. The duration of the study will be up to 18 weeks (with 8 visits) for each patient. This will include: a screening period of up to 4 weeks (Visit 1 to visit 2), a 2 week single blind, placebo run-in period (visit 2 to visit 4), and a 12 week placebo controlled, double blind treatment period (visit 4 to visit 8).
Patients with T2DM who have not been treated with an AHA, or who are on AHA monotherapy or low dose oral combination therapy (low dose defined as ≤50% of the maximum labeled dose of each agent), may participate if they meet all enrollment criteria. Patients eligible to be randomized will have a HbA1c ³6.5% and £10% .
Patients who meet the study enrollment criteria will undergo 2 experiments (see description below); a graded hyperglycemic technique and a meal test, prior to randomization (Visit 3 and 4). These experiments will be will be completed after a 12-hour overnight fast. The 2 experiments will be repeated at the conclusion of the 12-wk double-blind study period (Visits 7 and 8).
Efficacy measurements: (1) Glycemic control : FPG, HbA1c, β-cell Function Parameters(Φs, Φd, Φb, Φ, Φob, T), Insulin Secretion Rate (determined from C-peptide deconvolution), 1st and 2nd phase insulin secretion, Insulin response after arginine injection, Insulin sensitivity index, glucose, insulin, C-peptide total and incremental area under the curve.
Recruitment & Eligibility
- Status
- COMPLETED
- Sex
- All
- Target Recruitment
- 30
Not provided
- Patient has type 1 diabetes mellitus
- Patient required insulin therapy within 12 weeks of Visit 1. Note: patients who received a brief period of insulin treatment (e.g., several days during a hospitalization) and who are no longer requiring insulin treatment may participate
- Patient is currently or within 12 weeks of Visit 1 taking a TZD agent as monotherapy or in combination
- Patient is currently or within 12 weeks of Visit 1 taking Byetta.
- Patient is on corticosteroids
- Patient has a history of malignancy ≤5 years prior to signing informed consent, or >5 years without documentation of remission/cure Exception: Adequately treated basal cell or squamous cell skin cancer or in situ cervical cancer. Melanoma, leukemia, lymphoma and myeloproliferative disorders of any duration are excluded -Patient is on chemotherapy
- Patient received another investigational drug in the last 12 weeks.
- Patients with concomitant liver disease and or AST > 3 fold upper limit of normal
- Patients with kidney disease or CR>1.4 mg/dl
- Patients with anemia ( Hb <11 gr in male 10 gr in female)
- Patient with active vascular disease (coronary, peripheral or cerebrovascular)
- Patient has poorly controlled hypertension defined as systolic blood pressure >160 mm Hg or diastolic >95 mm Hg
- Proliferative retinopathy
Study & Design
- Study Type
- INTERVENTIONAL
- Study Design
- PARALLEL
- Primary Outcome Measures
Name Time Method FPG, HbA1c, β-cell Function Parameters(Φs, Φd, Φb, Φ, Φob, T), Insulin Secretion Rate (determined from C-peptide deconvolution), 1st and 2nd phase insulin secretion, Insulin response after arginine injection, Insulin sensitivity index, glucose, insulin, C-peptide total and incremental area under the curve.
- Secondary Outcome Measures
Name Time Method
Trial Locations
- Locations (1)
Sheba_Medical_Center
🇮🇱Tel Hashomer, Israel