- ICH GCP
- Registro degli studi clinici negli Stati Uniti
- Sperimentazione clinica NCT00420511
Beta-Cell Function and Sitagliptin Trial (BEST) (BEST)
A Randomized Controlled Pilot Study Assessing the Effect of Sitagliptin on the Preservation of Beta-Cell Function in Patients With Type 2 Diabetes
Type 2 diabetes mellitus (T2DM) is a chronic metabolic disorder characterized by progressive deterioration in the function of the pancreatic beta-cells, which are the cells that produce and secrete insulin (the hormone primarily responsible for the handling of glucose in the body). The investigators propose a double-blind, randomized controlled pilot study comparing the effect of sitagliptin (a novel anti-diabetic drug with beta-cell protective potential) versus placebo, on the preservation of beta-cell function over one year in patients with T2DM on metformin, the first-line agent for the treatment of T2DM (ie. the study groups will be (i) sitagliptin and metformin versus (ii) placebo and metformin). This study may demonstrate an important beta-cell protective capacity of sitagliptin.
Hypothesis: In patients with T2DM on metformin, treatment with the DPP-IV inhibitor sitagliptin will preserve pancreatic beta-cell function.
Panoramica dello studio
Stato
Condizioni
Intervento / Trattamento
Descrizione dettagliata
Tipo di studio
Iscrizione (Effettivo)
Fase
- Fase 2
Contatti e Sedi
Luoghi di studio
-
-
Ontario
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Toronto, Ontario, Canada, M5T 3L9
- Leadership Sinai Centre for Diabetes
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-
Criteri di partecipazione
Criteri di ammissibilità
Età idonea allo studio
Accetta volontari sani
Sessi ammissibili allo studio
Descrizione
Inclusion Criteria:
- Men and women between the ages of 30 and 75 inclusive
- Physician-diagnosed type 2 diabetes on 0-2 oral hypoglycemic agents
- Negative for anti-glutamic acid decarboxylase (anti-GAD_ antibodies (to rule out Latent Autoimmune Diabetes of Adults (LADA)
- A1c at screening between 6.5% and 9% inclusive if on no oral hypoglycemic agents or 6.0% and 9.0% inclusive if on 1-2 oral hypoglycemic agents
Exclusion Criteria:
- Current insulin therapy
- Type 1 diabetes or secondary forms of diabetes
- Any major illness with a life expectancy of < 5 years or that may interfere with the patient's participation in the study
- Involvement in any other study requiring drug therapy
- Renal dysfunction as evidenced by serum creatinine >/= 136 umol/L for males or >/= 124 umol/L for females or abnormal creatinine clearance (< 60 ml/min by Modification of Diet in Renal Disease (MDRD) formula)
- Hepatic disease considered to be clinically significant (includes jaundice, chronic hepatitis, or previous liver transplant) or transaminases > 2.5 times the upper limit of normal
- Excessive alcohol consumption, defined as > 14 alcoholic drinks per week for males and > 9 alcoholic drinks per week for females
- Pregnancy or unwillingness to use reliable contraception. Women should not be planning pregnancy for the duration of the study. Reliable contraception includes: birth control pill, intra-uterine device, abstinence, tubal ligation, partner vasectomy, or condoms with spermicide. Any women who miss a menstrual period or think that they may be pregnant must have a pregnancy test as soon as possible
- History of serious arrhythmia or atrioventricular block on baseline electrocardiogram
- Uncontrolled hypertension (systolic blood pressure > 180 mm Hg or diastolic blood pressure > 110 mm Hg)
- Unwillingness to undergo multiple daily insulin injection therapy for 4 weeks
- Unwillingness to perform capillary blood glucose monitoring at least 4 times per day during intensive insulin therapy
Piano di studio
Come è strutturato lo studio?
Dettagli di progettazione
- Scopo principale: Trattamento
- Assegnazione: Randomizzato
- Modello interventistico: Assegnazione parallela
- Mascheramento: Quadruplicare
Armi e interventi
Gruppo di partecipanti / Arm |
Intervento / Trattamento |
|---|---|
|
Sperimentale: Sitagliptin
Sitagliptin 100mg once a day (od) by mouth (po)
|
sitagliptin 100 mg once a day
Altri nomi:
metformin 1000 mg twice a day (bid) by mouth (po)
Altri nomi:
|
|
Comparatore placebo: Placebo arm
Placebo once a day (od) by mouth (po)
|
metformin 1000 mg twice a day (bid) by mouth (po)
Altri nomi:
placebo once a day
|
Cosa sta misurando lo studio?
Misure di risultato primarie
Misura del risultato |
Misura Descrizione |
Lasso di tempo |
|---|---|---|
|
Preservation of Beta-cell Function Measured by Area-under-the-curve (C-peptide/Glucose)/HOMA-IR
Lasso di tempo: 48 weeks
|
Area-under-the-C-peptide-curve (AUCCpep) and area-under-the-glucose-curve (AUCgluc) from 0 to 240 minutes during meal tests were calculated using the trapezoidal rule.
Insulin resistance was assessed using the Homeostasis Model Assessment of Insulin Resistance (HOMA-IR).
Beta-cell function was assessed using the ratio of total AUCCpep to AUCgluc divided by HOMA-IR (AUCCpep/gluc/HOMA-IR), a measure of insulin secretion in the context of ambient insulin sensitivity, analogous to the disposition index and adaptation index.
Higher AUCCpep/gluc/HOMA-IR is indicative of better beta-cell function.
|
48 weeks
|
Misure di risultato secondarie
Misura del risultato |
Misura Descrizione |
Lasso di tempo |
|---|---|---|
|
Insulinogenic Index Divided by HOMA-IR at 48 Weeks
Lasso di tempo: 48 weeks
|
Insulinogenic index was calculated as the incremental change in insulin from 0 to 30 minutes divided by the incremental change in glucose over the same period of time.
Insulinogenic index divided by HOMA-IR provides an additional measure of beta-cell function.
A higher value indicates better beta-cell function
|
48 weeks
|
|
Fasting Blood Glucose at 48 Weeks
Lasso di tempo: 48 weeks
|
48 weeks
|
|
|
Area-under-the-glucose-curve (AUCglucose) on Meal Test at 1 Year
Lasso di tempo: 1 year
|
1 year
|
|
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Time to Loss of Glycemic Control
Lasso di tempo: 1 year
|
1 year
|
|
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Proportion of Patients Achieving Sustained Normoglycemia Off Medication at 1-week Post-insulin Therapy
Lasso di tempo: 1 year
|
1 year
|
Collaboratori e investigatori
Collaboratori
Investigatori
- Investigatore principale: Bernard Zinman, MD, Leadership Sinai Centre for Diabetes, University of Toronto
- Investigatore principale: Ravi Retnakaran, MD, Leadership Sinai Centre for Diabetes, University of Toronto
Pubblicazioni e link utili
Studiare le date dei record
Studia le date principali
Inizio studio
Completamento primario (Effettivo)
Completamento dello studio (Effettivo)
Date di iscrizione allo studio
Primo inviato
Primo inviato che soddisfa i criteri di controllo qualità
Primo Inserito (Stima)
Aggiornamenti dei record di studio
Ultimo aggiornamento pubblicato (Stima)
Ultimo aggiornamento inviato che soddisfa i criteri QC
Ultimo verificato
Maggiori informazioni
Termini relativi a questo studio
Parole chiave
Termini MeSH pertinenti aggiuntivi
- Disturbi del metabolismo del glucosio
- Malattie metaboliche
- Malattie del sistema endocrino
- Diabete mellito
- Diabete mellito, tipo 2
- Agenti ipoglicemizzanti
- Effetti fisiologici delle droghe
- Meccanismi molecolari dell'azione farmacologica
- Inibitori enzimatici
- Ormoni
- Ormoni, sostituti ormonali e antagonisti ormonali
- Inibitori della proteasi
- Incretine
- Inibitori della dipeptidil-peptidasi IV
- Metformina
- Sitagliptin fosfato
Altri numeri di identificazione dello studio
- 065-00
Queste informazioni sono state recuperate direttamente dal sito web clinicaltrials.gov senza alcuna modifica. In caso di richieste di modifica, rimozione o aggiornamento dei dettagli dello studio, contattare register@clinicaltrials.gov. Non appena verrà implementata una modifica su clinicaltrials.gov, questa verrà aggiornata automaticamente anche sul nostro sito web .
Prove cliniche su Sitagliptin
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-
National Institute on Aging (NIA)CompletatoVolontari saniStati Uniti
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Brigham and Women's HospitalAttivo, non reclutanteArresto cardiaco | Diabete di tipo 2Stati Uniti
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Emory UniversityMerck Sharp & Dohme LLCTerminato
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Brigham and Women's HospitalCompletatoDiabete mellito di tipo 2 | Malattia cardiovascolare ateroscleroticaStati Uniti
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Baylor College of MedicineNational Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)Completato
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Kafrelsheikh UniversityCompletatoCirrosi Epatica Con DiabeteEgitto
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Case Comprehensive Cancer CenterReclutamentoGlioblastoma | Tumore cerebraleStati Uniti
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Shahid Beheshti University of Medical SciencesIsfahan University of Medical SciencesCompletatoPazienti con trauma in terapia intensivaIran (Repubblica Islamica del
-
Hawler Medical UniversityCompletatoDiabete mellito, tipo 2Iraq