5 This method is undoubtedly high yield when both the right question is asked and the right answer
is provided. However, some individuals have used intranasal or intravenous drugs only once and do not consider themselves at risk or are reluctant to report remote risky behaviors. Risk-based screening is also dependent on the screener’s HCV awareness, willingness, and time to administer a high-risk behavior Fulvestrant datasheet questionnaire during a medical visit. Risk-based screening might be a better tool to identify incident, rather than prevalent, cases of HCV. Because so many individuals are unaware of their infection, there is a need for improvement in the tools used to identify persons who are infected with HCV for years. Because 1 of 30 Baby Boomers is infected with HCV, birth-cohort screening may well be part of the solution. Currently, we have almost 1 year’s worth of experience with direct-acting antivirals (DAAs). The recent approval of a protease inhibitor (PI), in addition to pegylated interferon and ribavirin (Peg-IFN/RBV) has increased the rate of eradication of HCV genotype 1 from 40%-50%6 to 66%-75% in 2011, allowing shortened treatment duration (from 48 to 24-28 weeks) in more than half of the patients.7,
8 The availability of such effective therapy, known to decrease HCV-related morbidity and mortality, can justify the expansion of SRT1720 purchase screening recommendations, even if the medication is enormously costly. The article by Rein et al.9 demonstrates that birth-cohort screening for HCV in primary care settings is cost-effective in the United States based on mathematical models. By using cost-effectiveness simulation models that Amobarbital took into consideration the prevalence of HCV, its natural history, and the effect of antiviral treatment
on morbidity and mortality, the investigators estimated that such an initiative would identify 808,580 new cases of chronic HCV among Baby Boomers at a screening cost of $2,874 per new infection identified. They simulated different scenarios, including a one-time birth-cohort screening of all people born from 1945 through 1965 unaware of their HCV antibody status. They either assumed (1) all identified patients would be offered Peg-IFN/RBV or (2) those with genotype 2 and 3 infection would be offered Peg-IFN/RBV, whereas those with genotype 1 infection would be offered triple therapy with Peg-IFN/RBV and a PI, which is the new standard of care and, consequently, the most plausible scenario. Compared with risk-based screening and assuming treatment with Peg-IFN/RBV for all, 82,300 deaths from HCV would be avoided at a cost of $15 700 per quality-adjusted life-years (QALYs) gained. Using new DAAs in combination with Peg-IFN/RBV, 121,000 deaths from HCV would be avoided at a cost of $35,700 per QALYs saved. In other words, the incremental cost-effectiveness ratio (ICER) of birth-cohort screening with DAAs plus standard treatment was $35,700 per QALYs saved, compared with risk-based screening.