2012, Number 2
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Ann Hepatol 2012; 11 (2)
A review of drug interactions with boceprevir and telaprevir: implications for HIV and transplant patients
Wilby KJ, Greanya ED, Ford JE, Yoshida EM, Partovi N
Language: English
References: 26
Page: 179-185
PDF size: 89.28 Kb.
ABSTRACT
Purpose. Chronic hepatitis C virus (HCV) is a major problem affecting up to 170 million people worldwide.
Two protease inhibitors have recently been approved that will revolutionize treatment. Our objective was
to summarize and evaluate the literature pertaining to the pharmacokinetics of boceprevir and telaprevir,
in order to provide clinicians with insight into the management of actual and potential drug interactions.
Summary. A standardized search using MEDLINE (1948-November 2011), EMBASE (1980-November 2011), IPA
(1970-November 2011), Google, and Google Scholar that combined the search terms boceprevir, telaprevir,
pharmacokinetics, drug interaction, and drug metabolism was performed. Manual reference searches of
chosen articles were completed. Monographs and articles, conference proceedings, and abstracts were
evaluated. Boceprevir and telaprevir are both substrates and inhibitors of cytochrome P450 3A4 and telaprevir
is a substrate of p-glycoprotein. Levels of boceprevir are decreased in patients taking efavirenz but
effects with other antiretrovirals are minimal or unknown. Coadministration with efavirenz may compromise
telaprevir levels and should be avoided. Telaprevir may increase levels of cyclosporine, tacrolimus, atorvastatin,
and amlodipine, which may expose patients to increased adverse effects.
Conclusions. Significant
drug-drug interactions occur with both boceprevir and telaprevir. Until studies are reported and experience
is gained with these agents, clinicians will need to be careful when administering in high-risk populations
and those receiving chronic therapy with interacting agents. Studies are urgently needed in HIV
patients taking antiretrovirals and patients taking chronic immunosuppresion as these populations are at
increased risk of experiencing clinically significant interactions.
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