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- Klinische proef NCT00851981
Randomized, Controlled Trial of S-adenosylmethionine in Alcoholic Liver Disease (RCT SAMe)
9 september 2010 bijgewerkt door: 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.
Studie Overzicht
Toestand
Voltooid
Conditie
Interventie / Behandeling
Gedetailleerde beschrijving
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.
Studietype
Ingrijpend
Inschrijving (Verwacht)
60
Fase
- Fase 2
Contacten en locaties
In dit gedeelte vindt u de contactgegevens van degenen die het onderzoek uitvoeren en informatie over waar dit onderzoek wordt uitgevoerd.
Studie Locaties
-
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California
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Loma Linda, California, Verenigde Staten, 92354
- Loma Linda University
-
-
Deelname Criteria
Onderzoekers zoeken naar mensen die aan een bepaalde beschrijving voldoen, de zogenaamde geschiktheidscriteria. Enkele voorbeelden van deze criteria zijn iemands algemene gezondheidstoestand of eerdere behandelingen.
Geschiktheidscriteria
Leeftijden die in aanmerking komen voor studie
18 jaar en ouder (Volwassen, Oudere volwassene)
Accepteert gezonde vrijwilligers
Nee
Geslachten die in aanmerking komen voor studie
Allemaal
Beschrijving
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).
Studie plan
Dit gedeelte bevat details van het studieplan, inclusief hoe de studie is opgezet en wat de studie meet.
Hoe is de studie opgezet?
Ontwerpdetails
- Primair doel: Behandeling
- Toewijzing: Gerandomiseerd
- Interventioneel model: Parallelle opdracht
- Masker: Verdrievoudigen
Wapens en interventies
Deelnemersgroep / Arm |
Interventie / Behandeling |
|---|---|
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Placebo-vergelijker: 1
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TID
|
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Actieve vergelijker: SAMe
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300 mg TID
|
Wat meet het onderzoek?
Primaire uitkomstmaten
Uitkomstmaat |
Tijdsspanne |
|---|---|
|
Change in plasma homocysteine, hepatic GSH and SAMe levels and hepatic expression of TNF,MAT1A,MAT2A,MS,CBS and BHMT.
Tijdsspanne: 1 year
|
1 year
|
Secundaire uitkomstmaten
Uitkomstmaat |
Tijdsspanne |
|---|---|
|
Changes in routine liver pathology,c-myc expression and markers of apoptosis, stellate cell activation and hepatocyte proliferation.
Tijdsspanne: 1 year
|
1 year
|
Medewerkers en onderzoekers
Hier vindt u mensen en organisaties die betrokken zijn bij dit onderzoek.
Sponsor
Medewerkers
Onderzoekers
- Hoofdonderzoeker: Michel H Mendler, M.D., Loma Linda Univeristy
Studie record data
Deze datums volgen de voortgang van het onderzoeksdossier en de samenvatting van de ingediende resultaten bij ClinicalTrials.gov. Studieverslagen en gerapporteerde resultaten worden beoordeeld door de National Library of Medicine (NLM) om er zeker van te zijn dat ze voldoen aan specifieke kwaliteitscontrolenormen voordat ze op de openbare website worden geplaatst.
Bestudeer belangrijke data
Studie start
1 oktober 2008
Primaire voltooiing (Werkelijk)
1 mei 2010
Studie voltooiing (Werkelijk)
1 mei 2010
Studieregistratiedata
Eerst ingediend
24 februari 2009
Eerst ingediend dat voldeed aan de QC-criteria
24 februari 2009
Eerst geplaatst (Schatting)
26 februari 2009
Updates van studierecords
Laatste update geplaatst (Schatting)
13 september 2010
Laatste update ingediend die voldeed aan QC-criteria
9 september 2010
Laatst geverifieerd
1 september 2010
Meer informatie
Termen gerelateerd aan deze studie
Trefwoorden
Aanvullende relevante MeSH-voorwaarden
Andere studie-ID-nummers
- 55302
- 1R21AA014269-01A1 (Subsidie/contract van de Amerikaanse NIH)
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