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2014 ; 60
(1
): 37-45
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Cost analysis of sofosbuvir/ribavirin versus sofosbuvir/simeprevir for genotype 1
hepatitis C virus in interferon-ineligible/intolerant individuals
#MMPMID24677184
Hagan LM
; Sulkowski MS
; Schinazi RF
Hepatology
2014[Jul]; 60
(1
): 37-45
PMID24677184
show ga
Treatment guidance for chronic hepatitis C (CHC) released by the American
Association for the Study of Liver Diseases (AASLD) and the Infectious Diseases
Society of America (IDSA) offers two options for interferon
(IFN)-ineligible/intolerant individuals with genotype 1 infection:
sofosbuvir/ribavirin (SOF/RBV) for 24 weeks or sofosbuvir/simeprevir (SOF/SMV)
for 12 weeks. A 24-week course of SOF/RBV costs approximately US$169,000, with
sustained virologic response (SVR) rates ranging from 52% to 84%; 12 weeks of
SOF/SMV costs approximately $150,000, with SVR between 89% and 100%. Because
SOF/SMV is currently used off-label, debate exists among physicians and payers
about whether it should be prescribed and covered. This article presents a
cost-effectiveness analysis of these two treatment regimens accounting for costs
of drugs, treatment-related medical care, retreatment for individuals who do not
achieve SVR, and natural history of continued HCV infection after failed
retreatment. Analysis uses a Markov model with a lifetime horizon and a societal
perspective. In the base-case scenario, SOF/SMV dominated SOF/RBV in a modeled
50-year-old cohort of treatment-naïve and -experienced subjects, excluding those
who failed earlier therapy with telaprevir or boceprevir. SOF/SMV yielded lower
costs and more quality-adjusted life years (QALYs) for the average subject,
compared to SOF/RBV ($165,336 and 14.69 QALYs vs. $243,586 and 14.45 QALYs,
respectively). In base-case cost analysis, the SOF/SMV treatment strategy saved
$91,590 per SVR, compared to SOF/RBV. Under all one-way sensitivity scenarios,
SOF/SMV remained dominant and resulted in cost savings. CONCLUSIONS: These
results suggest that a 12-week course of SOF/SMV is a more cost-effective
treatment for genotype 1 CHC than 24 weeks of SOF/RBV among
IFN-ineligible/intolerant individuals, supporting the AASLD/IDSA guidance and
offering implications for both clinical and regulatory decision making as well as
pharmaceutical pricing.