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Abstract
Approximately 287,000 individuals in the USA are coinfected with HIV and hepatitis C. Recently, new hepatitis C regimens have become available, increasing rates of sustained virologic response in the monoinfected, with studies evaluating their success in the coinfected under way. Previous investigators estimated eligibility for hepatitis C therapy among the coinfected patients, but all had significant methodological limitations. Our study is the first to use a multi-year, statewide, population-based sample to estimate treatment eligibility, and the first to estimate eligibility in the setting of an interferon-free regimen. In a population-based sample of 161 patients infected with HIV and hepatitis C living in Oregon during 2007–2010, 21% were eligible for hepatitis C therapy. Despite the anticipation surrounding an interferon-sparing regimen, eligibility assuming an interferon-free regimen increased only to 26%, largely due to multiple simultaneous contraindications. Obesity was described for the first time as being associated with decreased eligibility (OR: 0.11). Active alcohol abuse was the most common contraindication (24%); uncontrolled mental health (22%), recent injection drug use (21%), poor antiretroviral adherence (22%), and infection (21%) were also common excluding conditions. When active drug or alcohol abuse was excluded as contraindications to therapy, the eligibility rate was 34%, a 62% increase. Assuming an interferon-free regimen and the exclusion of active drug or alcohol abuse as contraindications to therapy, the eligibility rate increased to 42%. Despite the availability of direct-acting anti-viral regimens, eligibility rates in HIV–hepatitis C virus (HCV) coinfection are modest. Many factors precluding hepatitis C therapy are reversible, and targeted interventions could result in increased eligibility.
Acknowledgments
The authors thank Tyler Smith, N.D. for his astute insight into the MMP, Michael Chang, M.D. for assistance in reviewing laboratory results, and Kari Greene. They also thank the Oregon Health Authority for its logistical support.