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Alcohol use and hepatitis C virus treatment outcomes among patients receiving direct antiviral agents.

Tsui JI, Williams EC, Green PK, Berry K, Su F, Ioannou GN. Alcohol use and hepatitis C virus treatment outcomes among patients receiving direct antiviral agents. Drug and Alcohol Dependence. 2016 Dec 1; 169:101-109.

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Abstract:

BACKGROUND: It is unclear whether alcohol use negatively impacts HCV treatment outcomes in the era of direct antiviral agents (DAAs). We aimed to evaluate the associations between current levels of drinking and treatment response among persons treated for HCV with DAAs in the national Veterans Affairs (VA) healthcare system. METHODS: We identified patients who initiated HCV DAAs over 18 months (1/1/14-6/30/15) and had documented alcohol screening with the Alcohol Use Disorders Identification Test Consumption (AUDIT-C) questionnaire within one year prior to initiating therapy. DAAs included: sofosbuvir (SOF), ledipasvir/sofosbuvir (LDV/SOF) or ombitasvir-paritaprevir-ritonavir, and dasabuvir (PrOD). AUDIT-C scores were categorized as 0 (abstinence), 1-3 (low-level drinking) and 4-12 (unhealthy drinking) in men or 0, 1-2 and 3-12 in women. RESULTS: Among 17,487 patients who initiated DAAs, 15,151 (87%) completed AUDIT-C screening: 10,387 (68.5%) were categorized as abstinent, 3422 (22.6%) as low-level drinking and 1342 (8.9%) as unhealthy drinking. There were no significant differences in sustained virologic response (SVR) rates between abstinent (SVR 91%; 95% CI: 91-92%), low-level drinking (SVR 93%; 95% CI 92-94%) or unhealthy drinking (SVR 91%; 95% 89-92) categories in univariable analysis or in multivariable logistic regression models. However, after imputing missing SVR data, unhealthy drinkers were less likely to achieve SVR in multivariable analysis (AOR 0.75, 95% CI 0.60-0.92). CONCLUSION: Absolute SVR rates were uniformly high among all persons regardless of alcohol use, with only minor differences in those who report unhealthy drinking, which supports clinical guidelines that do not recommend excluding persons with alcohol use.





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