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- Registre américain des essais cliniques
- Essai clinique NCT00851981
Randomized, Controlled Trial of S-adenosylmethionine in Alcoholic Liver Disease (RCT SAMe)
9 septembre 2010 mis à jour par: Loma Linda University
Effect of Oral S-Adenosylmethionine Administration on Abnormalities of Hepatic Methionine Metabolism and Disease Progression in Alcoholic Liver Disease. A Randomized, Double Blind, Placebo-controlled Trial
Background: Alcoholic liver disease is one of the most important causes of chronic liver disease in this country.
There is currently no treatment for chronic alcoholic liver disease other than abstinence.
Hepatic methionine metabolism is abnormal in these patients and one of the consequences is depletion of S-adenosylmethionine (SAMe) levels, which can affect numerous important cellular processes.
SAMe has been increasingly utilized for the treatment of liver diseases although the protective mechanisms remain unclear.
A recent randomized double-blind trial using SAMe in patients with alcoholic liver disease and found improvement in 2-year survival in those with less advanced liver disease.
However, important changes in methionine metabolism and histological changes were not included in the study.
Aim: The goal of this study is to determine the effect of SAMe administration on key metabolic abnormalities of the methionine cycle and on the recovery from alcoholic liver disease.
Aperçu de l'étude
Statut
Complété
Les conditions
Intervention / Traitement
Description détaillée
Methods: This is a randomized, double blind, placebo-controlled trial.
Thirty patients with stable alcoholic hepatitis (Maddrey Score < 32) without cirrhosis who meet entry criteria will receive either 400 mg of SAMe (n=15) or placebo (n=15) three times a day for the duration of one year.
History, physical assessment, various blood tests and a liver biopsy will be performed prior to treatment.
Patients will have repeat blood tests on subsequent follow-up visits every month for the first two months, then every two months thereafter.
They will also be encouraged to abstain from alcohol during these visits.
A post-treatment liver biopsy will be obtained at the end of the trial.
The primary outcome parameters include serum homocysteine, SAMe and TNFalpha levels, and the expression of key hepatic enzymes of the methionine cycle and of hepatic SAMe and glutathione levels.
Histological progression of alcoholic liver disease, clinical and biochemical indices of liver disease, and quality of life assessment will also be examined.
Type d'étude
Interventionnel
Inscription (Anticipé)
60
Phase
- Phase 2
Contacts et emplacements
Cette section fournit les coordonnées de ceux qui mènent l'étude et des informations sur le lieu où cette étude est menée.
Lieux d'étude
-
-
California
-
Loma Linda, California, États-Unis, 92354
- Loma Linda University
-
-
Critères de participation
Les chercheurs recherchent des personnes qui correspondent à une certaine description, appelée critères d'éligibilité. Certains exemples de ces critères sont l'état de santé général d'une personne ou des traitements antérieurs.
Critère d'éligibilité
Âges éligibles pour étudier
18 ans et plus (Adulte, Adulte plus âgé)
Accepte les volontaires sains
Non
Sexes éligibles pour l'étude
Tout
La description
Inclusion Criteria:
- Patients must be chronic alcohol users, defined by a history of ethanol consumption on average > 40g/day for women and 60g/day for men for at least 1 year before inclusion.
- The presumptive diagnosis for alcoholic hepatitis will be: recent binge drinking; compatible physical findings (one or more: jaundice, enlarged liver, hepatic bruit, abdominal pain, loss of appetite, nausea); and a compatible biochemical profile (moderate elevation of AST over ALT, elevated total serum bilirubin); or a liver-spleen colloid scan suggestive of reticulo-endothelial redistribution and hepatic arterialization.
- The diagnosis of alcoholic hepatitis must be confirmed on liver biopsy, showing typical features of acute sclerosing hyaline necrosis 70.
- The degree of portal fibrosis as determined on liver biopsy, graded according to the Knodell score-modified by Ishak 71 must be less than or equal to 5 out of a possible score of 6, 6 indicating cirrhosis.
- The alcoholic hepatitis must be "stable", i.e. not requiring treatment by either pentoxifylline 72 or prednisone, with a Maddrey Score 73 {(PTpatient - PTcontrol) x 4.6 + TBmg/dL} < 32.
- Patients must be willing to participate in the trial, remain abstinent to alcohol, and compliant to the treatment regimen, and undergo a post-treatment liver biopsy.
Exclusion Criteria:
- Patients who have either compensated cirrhosis (biopsy proven) or a clinical picture of severe cirrhosis defined as Child's class C and/or with a recent history (within one month) of decompensated liver disease (history of ascites, encephalopathy or variceal bleeding within one month of trial entry). These patients have reduced life expectancy below one year and are most often severely coagulopathic and cannot be biopsied.
- Patients who have severe acute alcoholic hepatitis of poor prognosis defined as a Maddrey Score > 32. These patients have a mortality rate of 50% during their hospitalization period when untreated by either prednisone or pentoxifylline.
- Patients who are receiving hepatotropic treatments such as colchicine, penicillamine, corticosteroids, ursodeoxycholic acid, and pentoxifylline.
- Patients who are receiving known hepatotoxic long-term treatments such as NSAIDs, statins, neuroleptics, certain anti-convulsive medications, or high-dose acetaminophen.
- Patients suspected of having hepatocellular carcinoma.
- Patients who have contra-indications to liver biopsy.
- Patients who have a liver biopsy that does not yield sufficient specimen for analyses.
- Patients who have untreated deficiencies of folic acid, vitamin B6 or B12.
- Patients who have chronic active Hepatitis B or C, hemochromatosis, autoimmune hepatitis, or a cholangiopathy.
- Patients with psychotic disorders, and in particular manic depression (contra indication to SAMe treatment).
Plan d'étude
Cette section fournit des détails sur le plan d'étude, y compris la façon dont l'étude est conçue et ce que l'étude mesure.
Comment l'étude est-elle conçue ?
Détails de conception
- Objectif principal: Traitement
- Répartition: Randomisé
- Modèle interventionnel: Affectation parallèle
- Masquage: Tripler
Armes et Interventions
Groupe de participants / Bras |
Intervention / Traitement |
|---|---|
|
Comparateur placebo: 1
|
TID
|
|
Comparateur actif: SAMe
|
300 mg TID
|
Que mesure l'étude ?
Principaux critères de jugement
Mesure des résultats |
Délai |
|---|---|
|
Change in plasma homocysteine, hepatic GSH and SAMe levels and hepatic expression of TNF,MAT1A,MAT2A,MS,CBS and BHMT.
Délai: 1 year
|
1 year
|
Mesures de résultats secondaires
Mesure des résultats |
Délai |
|---|---|
|
Changes in routine liver pathology,c-myc expression and markers of apoptosis, stellate cell activation and hepatocyte proliferation.
Délai: 1 year
|
1 year
|
Collaborateurs et enquêteurs
C'est ici que vous trouverez les personnes et les organisations impliquées dans cette étude.
Parrainer
Collaborateurs
Les enquêteurs
- Chercheur principal: Michel H Mendler, M.D., Loma Linda Univeristy
Dates d'enregistrement des études
Ces dates suivent la progression des dossiers d'étude et des soumissions de résultats sommaires à ClinicalTrials.gov. Les dossiers d'étude et les résultats rapportés sont examinés par la Bibliothèque nationale de médecine (NLM) pour s'assurer qu'ils répondent à des normes de contrôle de qualité spécifiques avant d'être publiés sur le site Web public.
Dates principales de l'étude
Début de l'étude
1 octobre 2008
Achèvement primaire (Réel)
1 mai 2010
Achèvement de l'étude (Réel)
1 mai 2010
Dates d'inscription aux études
Première soumission
24 février 2009
Première soumission répondant aux critères de contrôle qualité
24 février 2009
Première publication (Estimation)
26 février 2009
Mises à jour des dossiers d'étude
Dernière mise à jour publiée (Estimation)
13 septembre 2010
Dernière mise à jour soumise répondant aux critères de contrôle qualité
9 septembre 2010
Dernière vérification
1 septembre 2010
Plus d'information
Termes liés à cette étude
Mots clés
Termes MeSH pertinents supplémentaires
Autres numéros d'identification d'étude
- 55302
- 1R21AA014269-01A1 (Subvention/contrat des NIH des États-Unis)
Ces informations ont été extraites directement du site Web clinicaltrials.gov sans aucune modification. Si vous avez des demandes de modification, de suppression ou de mise à jour des détails de votre étude, veuillez contacter register@clinicaltrials.gov. Dès qu'un changement est mis en œuvre sur clinicaltrials.gov, il sera également mis à jour automatiquement sur notre site Web .