Cost effectiveness of interferon alpha2b combined with ribavirin for the treatment of chronic hepatitis C.
Treatment of chronic hepatitis C with Interferon (IFN) alpha2b monotherapy results in 10% to 15% sustained virological response (SVR). Combining IFN with ribavirin increases this response. In this analysis, using the Markov model, 6 treatment strategies for chronic hepatitis C (previously untreated) were compared on the basis of incremental cost per additional quality-adjusted life years ($/QALY). Our results showed that the no treatment strategy was associated with a cost of $38,747 and 13.10 QALYs. The strategy using IFN alone for 48 weeks was associated with a cost of $35,642 and 14.05 QALYs. The strategy using IFN monotherapy followed by combination therapy for nonresponders and relapsers was associated with a cost of $34, 561 and 15.53 QALYs. A similar strategy, but limiting combination to relapsers only, was associated with a cost of $34,758 and 14.40 QALYs. The strategy using IFN with ribavirin as the initial therapy for all patients was associated with a cost of $34,792 and 15.31 QALYs. Finally, the strategy using viral genotyping first and then adjusting the duration of combination therapy based on genotype was associated with a cost of $37,263 and 15.89 QALYs. The strategy using genotyping to guide duration of combination therapy was the most cost-effective approach with an incremental cost-effectiveness ratio of $7,500 per QALY. Sensitivity analyses confirmed the robustness of these results. We conclude that combination of IFN and ribavirin with duration of therapy based on the viral genotype, is a cost-effective approach in treating patients with chronic hepatitis C.
Younossi
Z M
ZM
Department of Gastroenterology, The Cleveland Clinic Foundation, Cleveland, OH 44195, USA. younosz@cesmtp.ccf.org
Singer
M E
ME
McHutchison
J G
JG
Shermock
K M
KM
D000998:Antiviral Agents / Q000191:economics* / Q000627:therapeutic use; D003362:Cost-Benefit Analysis; D003663:Decision Trees; D004359:Drug Therapy, Combination; D019698:Hepatitis C, Chronic / Q000188:drug therapy* / Q000191:economics*; D006801:Humans; D000077190:Interferon alpha-2; D016898:Interferon-alpha / Q000191:economics* / Q000627:therapeutic use; D008297:Male; D008390:Markov Chains; D008875:Middle Aged; D015233:Models, Statistical; D011336:Probability; D011788:Quality of Life; D011994:Recombinant Proteins; D012254:Ribavirin / Q000191:economics* / Q000627:therapeutic use; D012680:Sensitivity and Specificity; D013997:Time Factors; D014481:United States
D000998:Antiviral Agents; D000077190:Interferon alpha-2; D016898:Interferon-alpha; D011994:Recombinant Proteins; D012254:Ribavirin