Safety of Acamprosate for Alcohol Dependence in the Elderly: An Open-Label Study (SAFADIE)

• Status: Unknown status
• Trial end date: 2008-12-01
• Target enrollment: 0
• Participant gender: All

Summary

Alcohol abuse and dependence are very prevalent and result in significant morbidity, mortality and cost to society (Harwood 2000). Pharmacotherapies to assist with alcohol dependence consist of disulfiram, naltrexone and acamprosate. Of these, acamprosate is unique in that it is not metabolized by the liver, but rather completely excreted renally. In contrast, naltrexone is metabolized by the CYP450 system of the liver and less than 2% is excreted unchanged and can cause liver damage (PDR 2005). Multiple cases of hepatitis, including both cholestatic and fulminant hepatitis, as well as hepatic failure resulting in transplantation or death, have been reported with administration of disulfiram (PDR 2005). The incidence of liver disease among alcoholics is high and increases with age and years of drinking and this may preclude the use of antabuse or naltrexone to help alcohol dependent patients with liver disease or that are elderly . Thus acamprosate has a unique safety profile that would make it ideally suited for treating alcohol dependence in the elderly, even in the presence of hepatic impairment. The current study is to evaluate the safety profile of acamprosate in elderly patients with alcohol dependence.

Acamprosate, calcium acetyl homotaurinate, has been approved in most European countries and the U.S. for the maintenance of abstinence in recently detoxified alcoholics. The mechanism of action involves primarily the restoration of a normal N-methyl- D -aspartate (NMDA) receptor tone in glutamatergic systems (Rammes et al 2001). Several trials of acamprosate confirm its efficacy in the maintenance of abstinence in alcohol dependence (Lesch et al. 2001; Slattery et al. 2003; Mann et al. 2004; Verheul et al. 2004). It also reduces the severity of relapse in alcoholics in abstinence based treatment programs (Chick et al. 2003). There is limited data on the safety of acamprosate in the elderly (PDR 2005).

For the purposes of this study, elderly will be defined as 60 years or older.

STUDY OBJECTIVE: To determine the short-term safety of Acamprosate in the treatment of alcohol dependence in the elderly.

• Phase: Phase 4
• Accepts Healthy Volunteers?: No

Details

• Lead Sponsor: University of New Mexico
• Treatments: Acamprosate

Criteria

Inclusion Criteria:

1. Patients, men and women, age 60 and older.

2. Patients with Alcohol Dependence as determined by SCID I section for substance use disorders who are not in full sustained remission.

3. Patients who have consumed significant amounts of alcohol in the past 30 days, as determined by Time Line Follow Back report by patient and patient's spouse, partner or friend. Significant amounts is defined for these purposes as at least one episode of 5 or more drinks, with a drink defined as one bottle of beer, one glass of wine or one shot of liquor.

4. Patients, who are able to comprehend and satisfactorily comply with protocol requirements.

5. Patients, who signed the written informed consent given prior to entering any study procedure and completed the informed consent quiz.

Exclusion Criteria:

1. Patients with the following concurrent DSM-IV Axis I diagnoses as determined by the relevant sections of SCID I:

• Current, acute psychosis regardless of etiology

• Moderate to severe dementia regardless of etiology, defined as a MMSE score of 18 or less out of 30.

• Current opioid, cocaine or amphetamine dependence, defined as not meeting criteria for sustained full remission.

2. Patients with significant or unstable medical conditions as determined by investigator. This is defined as a medical condition that, in the Investigator's opinion, would expose them to an increased risk of a significant adverse event or interfere with assessments of safety during the course of the trial.

3. Patients with significantly abnormal lab values, as determined by the investigator, including creatinine clearance less than 30 as determined by Cockcroft-Gault estimate.

4. Patients with a history of intolerance or hypersensitivity to acamprosate.

5. Patients who are actively suicidal.