JOURNAL CLUB

Dear Friends and Colleagues:
Attached a very interesting article regarding the promising results of a study using Topiramate for the treatment of alcohol dependence. For more information see http://jama.ama-assn.org/cgi/content/full/298/14/1641.
The authors conclude that:
"Our finding in this study that topiramate is a safe and consistently efficacious medication for treating alcohol dependence is scientifically and clinically important. Alcoholism ranks third and fifth on the US and global burdens of disease, respectively. Discovering pharmacological agents such as topiramate that improve drinking outcomes can make a major contribution to global health. Because topiramate pharmacotherapy can be paired with a brief intervention deliverable by nonspecialist health practitioners, a next step would be to examine its efficacy in community practice settings."

Looking forward to your comments.
Yours
Bernd

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Topiramate for Treating Alcohol Dependence
A Randomized Controlled Trial

Bankole A. Johnson, DSc, MD, PhD; Norman Rosenthal, MD; Julie A. Capece, BA; Frank Wiegand, MD; Lian Mao, PhD; Karen Beyers, MS; Amy McKay, PharmD; Nassima Ait-Daoud, MD; Raymond F. Anton, MD; Domenic A. Ciraulo, MD; Henry R. Kranzler, MD; Karl Mann, MD; Stephanie S. O’Malley, PhD; Robert M. Swift, MD, PhD; for the Topiramate for Alcoholism Advisory Board and the Topiramate for Alcoholism Study Group

JAMA. 2007;298:1641-1651.

ABSTRACT


Context Hypothetically, topiramate can improve drinking outcomes among alcohol-dependent individuals by reducing alcohol's reinforcing effects through facilitation of -aminobutyric acid function and inhibition of glutaminergic pathways in the corticomesolimbic system.

Objective To determine if topiramate is a safe and efficacious treatment for alcohol dependence.

Design, Setting, and Participants Double-blind, randomized, placebo-controlled, 14-week trial of 371 men and women aged 18 to 65 years diagnosed with alcohol dependence, conducted between January 27, 2004, and August 4, 2006, at 17 US sites.

Interventions Up to 300 mg/d of topiramate (n = 183) or placebo (n = 188), along with a weekly compliance enhancement intervention.

Main Outcome Measures Primary efficacy variable was self-reported percentage of heavy drinking days. Secondary outcomes included other self-reported drinking measures (percentage of days abstinent and drinks per drinking day) along with the laboratory measure of alcohol consumption (plasma -glutamyltransferase).

Results Treating all dropouts as relapse to baseline, topiramate was more efficacious than placebo at reducing the percentage of heavy drinking days from baseline to week 14 (mean difference, 8.44%; 95% confidence interval, 3.07%-13.80%; P = .002). Prespecified mixed-model analysis also showed that topiramate compared with placebo decreased the percentage of heavy drinking days (mean difference, 16.19%; 95% confidence interval, 10.79%-21.60%; P < .001) and all other drinking outcomes (P < .001 for all comparisons). Adverse events that were more common with topiramate vs placebo, respectively, included paresthesia (50.8% vs 10.6%), taste perversion (23.0% vs 4.8%), anorexia (19.7% vs 6.9%), and difficulty with concentration (14.8% vs 3.2%).

Conclusion Topiramate is a promising treatment for alcohol dependence.