- ICH GCP
- Registre américain des essais cliniques
- Essai clinique NCT07934225
Alpha-Lipoic Acid Added to Dapagliflozin and Insulin Resistance in Type 2 Diabetes (ALA/DAPA)
Effect of Alpha-Lipoic Acid as Add-on Therapy to Dapagliflozin on Insulin Resistance and Glycemic Control in Patients With Type 2 Diabetes Mellitus: A Randomized, Double-Blind, Placebo-Controlled Clinical Trial
The goal of this clinical trial is to test whether adding alpha-lipoic acid (ALA) to usual treatment with metformin and dapagliflozin improves insulin resistance in adults with type 2 diabetes mellitus. The main questions it aims to answer are:
- Does ALA 600 mg once daily for 12 weeks lower insulin resistance, measured by the Homeostatic Model Assessment of Insulin Resistance (HOMA-IR), more than a placebo?
- Does ALA also improve blood sugar control, body weight and waist size, blood pressure, and blood fats, and is it safe and well tolerated?
Participants will:
- Keep taking their usual metformin and dapagliflozin 10 mg daily without any change.
- Take one capsule every day for 12 weeks, either ALA 600 mg or a matching placebo (a capsule with no active ingredient), assigned by chance.
- Visit the clinic at the start, at week 6, and at week 12 for blood tests, body measurements, and safety checks.
Researchers will compare the ALA group with the placebo group to see if ALA lowers HOMA-IR more than placebo.
Aperçu de l'étude
Statut
Les conditions
Intervention / Traitement
Description détaillée
Type 2 diabetes mellitus is characterized by insulin resistance. No randomized trial has yet evaluated ALA added to dapagliflozin with HOMA-IR as the primary endpoint, which is the gap this study addresses.
The study is a single-center, parallel-group trial conducted at the Diabetes and Endocrinology Outpatient Clinic of Fayoum University Hospital, Egypt.
Randomization is 1:1 using a computer-generated. Allocation is concealed with sequentially numbered, opaque, sealed envelopes. Capsules are identical in appearance, so participants, treating clinicians, outcome assessors, and the statistician remain blinded until database lock.
Visits take place at baseline, Week 6, and Week 12. Fasting blood samples (glucose, insulin, HbA1c, lipid profile), weight, height, waist circumference, and blood pressure are collected at baseline and Week 12. Week 6 includes anthropometrics, blood pressure, adherence by pill count, and adverse event review. HOMA-IR is calculated as fasting insulin (microunits/mL) multiplied by fasting glucose (mg/dL), divided by 405.
Analysis follows the intention-to-treat principle. Between-group differences are tested with analysis of covariance (ANCOVA) using the baseline value as covariate, with a two-sided significance level of 0.05. The sample size was calculated for a standardized effect size of 0.75 (80% power, alpha 0.05), giving 28 participants per group, increased to allow for 15% dropout and an additional safety margin.
Type d'étude
Inscription (Estimé)
Phase
- Phase 3
Contacts et emplacements
Coordonnées de l'étude
- Nom: Sherif T Ahmed, teachig assistant
- Numéro de téléphone: 01012661535
- E-mail: Sta11@fayoum.edu.eg
Sauvegarde des contacts de l'étude
- Nom: Huda M Rabie, professor
- Numéro de téléphone: 01144073236
- E-mail: hoda.ahmed@pharm.bus.edu.eg
Lieux d'étude
-
-
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Al Fayyum, Egypte
- Fayoum University
-
Contact:
- Sherif T Ahmed, teaching assistant
- Numéro de téléphone: 01012661535
- E-mail: Sta11@fayoum.edu.eg
-
Contact:
- Sherif T Rabie, teaching assistant
- Numéro de téléphone: 01144073236
- E-mail: hoda.ahmed@pharm.bus.edu.eg
-
-
Critères de participation
Critère d'éligibilité
Âges éligibles pour étudier
Accepte les volontaires sains
Sexes éligibles pour l'étude
La description
Inclusion Criteria:
- Adults aged 30 to 70 years, either sex
- Established diagnosis of type 2 diabetes mellitus
- HbA1c between 7.0% and 10.0% at screening
- On stable metformin plus dapagliflozin 10 mg daily for at least 3 months
- Able and willing to give written informed consent
Exclusion Criteria:
- Type 1 diabetes or secondary forms of diabetes
- Pregnancy, lactation, or planned pregnancy
- eGFR below 45 mL/min/1.73 m2
- Severe liver disease (Child-Pugh B or C)
- Acute coronary syndrome, stroke, or hospitalization for decompensated heart failure within the past 3 months
- Current or recent (within 4 weeks) use of alpha-lipoic acid, other high-dose antioxidant supplements, or insulin
- Known hypersensitivity to alpha-lipoic acid or placebo excipients
- Active malignancy or any condition that would prevent completing 12 weeks of follow-up
Plan d'étude
Comment l'étude est-elle conçue ?
Détails de conception
- Objectif principal: Traitement
- Répartition: Randomisé
- Modèle interventionnel: Affectation parallèle
- Masquage: Quadruple
Armes et Interventions
Groupe de participants / Bras |
Intervention / Traitement |
|---|---|
|
Comparateur actif: ALA + Metformin/Dapagliflozin
Alpha-lipoic acid 600 mg capsule taken orally once daily for 12 weeks, in addition to the participant's usual metformin and dapagliflozin 10 mg daily, which continue unchanged. |
Oral capsules dispensed at study visits. Unused capsules are returned and counted at Week 6 and Week 12 to measure adherence. |
|
Comparateur placebo: Placebo + Metformin/Dapagliflozin
Matching placebo capsule taken orally once daily for 12 weeks, in addition to the participant's usual metformin and dapagliflozin 10 mg daily, which continue unchanged. |
Capsule with no active ingredient, dispensed and counted on the same schedule as the ALA capsule. |
Que mesure l'étude ?
Principaux critères de jugement
Mesure des résultats |
Description de la mesure |
Délai |
|---|---|---|
|
Change in Homeostatic Model Assessment of Insulin Resistance (HOMA-IR)
Délai: Baseline to Week 12
|
HOMA-IR = fasting insulin (microunits/mL) x fasting glucose (mg/dL) / 405, calculated from fasting blood samples. Change = Week 12 value minus baseline value. |
Baseline to Week 12
|
Mesures de résultats secondaires
Mesure des résultats |
Description de la mesure |
Délai |
|---|---|---|
|
Change in glycated hemoglobin (HbA1c)
Délai: Baseline to Week 12
|
Percentage points, measured by high-performance liquid chromatography. Change = Week 12 minus baseline. |
Baseline to Week 12
|
|
Change in fasting plasma glucose
Délai: Baseline to Week 12
|
Measured in mg/dL after 10 to 12 hours of fasting. Change = Week 12 minus baseline. |
Baseline to Week 12
|
|
Change in systolic and diastolic blood pressure
Délai: Baseline to Week 12
|
Measured in mmHg. Change = Week 12 minus baseline. |
Baseline to Week 12
|
Collaborateurs et enquêteurs
Parrainer
Les enquêteurs
- Chercheur principal: Sherif T Ahmed, teaching assistant, Fayoum University
Dates d'enregistrement des études
Dates principales de l'étude
Début de l'étude (Estimé)
Achèvement primaire (Estimé)
Achèvement de l'étude (Estimé)
Dates d'inscription aux études
Première soumission
Première soumission répondant aux critères de contrôle qualité
Première publication (Réel)
Mises à jour des dossiers d'étude
Dernière mise à jour publiée (Réel)
Dernière mise à jour soumise répondant aux critères de contrôle qualité
Dernière vérification
Plus d'information
Termes liés à cette étude
Termes MeSH pertinents supplémentaires
- Maladies du système endocrinien
- Maladies métaboliques
- Troubles du métabolisme du glucose
- Diabète sucré
- Résistance à l'insuline
- Hyperinsulinisme
- Maladies nutritionnelles et métaboliques
- Diabète sucré, Type 2
- Syndrome métabolique
- Composés de soufre
- Produits chimiques organiques
- Acides gras
- Lipides
- Acides carboxyliques
- Enzymes et coenzymes
- Coenzymes
- Thiophenes
- Acide thioctique
Autres numéros d'identification d'étude
- R 916
Plan pour les données individuelles des participants (IPD)
Prévoyez-vous de partager les données individuelles des participants (DPI) ?
Informations sur les médicaments et les dispositifs, documents d'étude
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