Title |
Emergence of hepatitis C virus NS5A L31V plus Y93H variant upon treatment failure of daclatasvir and asunaprevir is relatively resistant to ledipasvir and NS5B polymerase nucleotide inhibitor GS-558093 in human hepatocyte chimeric mice
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Published in |
Journal of Gastroenterology, July 2015
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DOI | 10.1007/s00535-015-1108-6 |
Pubmed ID | |
Authors |
Yugo Kai, Hayato Hikita, Tomohide Tatsumi, Tasuku Nakabori, Yoshinobu Saito, Naoki Morishita, Satoshi Tanaka, Takatoshi Nawa, Tsugiko Oze, Ryotaro Sakamori, Takayuki Yakushijin, Naoki Hiramatsu, Hiroshi Suemizu, Tetsuo Takehara |
Abstract |
Resistance-associated variants (RAVs) emerge at multiple positions spanning hepatitis C virus (HCV) NS3/4A and NS5A regions upon failure of asunaprevir/daclatasvir combination therapy. It has not been determined whether the emergence of such RAVs have an impact on re-treatment by a combination of ledipasvir and sofosbuvir, a potent regimen for HCV genotype 1 infection. TK-NOG human hepatocyte chimeric mice were inoculated with sera from a patient with treatment failure of asunaprevir/daclatasvir therapy. They developed persistent HCV infection with triple variants of NS3/4A D168V, NS5A L31V plus Y93H. Administration of ledipasvir/GS-558093 (a NS5B nucleotide analog) in these mice failed to achieve end-of-treatment response or sustained virologic response, which was in sharp contrast to the results in mice with wild-type virus infection. The administration of telaprevir/GS-558093 successfully achieved it in those mice. Treatment failure with asunaprevir/daclatasvir may limit further treatment options. This population may represent a growing unmet medical need. |
X Demographics
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United Kingdom | 1 | 33% |
Unknown | 2 | 67% |
Demographic breakdown
Type | Count | As % |
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Members of the public | 3 | 100% |
Mendeley readers
Geographical breakdown
Country | Count | As % |
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Japan | 1 | 3% |
Unknown | 29 | 97% |
Demographic breakdown
Readers by professional status | Count | As % |
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Researcher | 7 | 23% |
Other | 4 | 13% |
Student > Ph. D. Student | 3 | 10% |
Student > Bachelor | 2 | 7% |
Professor | 2 | 7% |
Other | 7 | 23% |
Unknown | 5 | 17% |
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Medicine and Dentistry | 15 | 50% |
Biochemistry, Genetics and Molecular Biology | 4 | 13% |
Agricultural and Biological Sciences | 2 | 7% |
Veterinary Science and Veterinary Medicine | 1 | 3% |
Neuroscience | 1 | 3% |
Other | 0 | 0% |
Unknown | 7 | 23% |