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Pàgina inicial > Articles > Articles publicats > Baseline hepatitis C virus resistance-associated substitutions present at frequencies lower than 15% may be clinically significant |
Data: | 2018 |
Resum: | Controversy is ongoing about whether a minority mutant present at frequencies below 15% may be clinically relevant and should be considered to guide treatment. Resistance-associated substitution (RAS) studies were performed in patients before and at failure of antiviral treatments using Next-generation hepatitis C virus (HCV) sequencing (NGS). We have found two patients with genotype 1a infection having RAS in 3. 5%-7. 1% of the viral population at baseline that were selected during ledipasvir + sofosbuvir treatment. Co-selection of RAS located in a region not directly affected by the antiviral treatment also occurred. This observation calls into question, the recommendations to guide RAS-based direct-acting antiviral (DAA) treatment only when RAS are present in >15% of the sequences generated. Our results suggests that RAS study should include all three HCV DAA target proteins and minority mutants should be considered as clinically relevant. |
Ajuts: | Instituto de Salud Carlos III PI16/00337 Instituto de Salud Carlos III CP14/00121 Ministerio de Economía y Competitividad IDI-20151125 Ministerio de Economía y Competitividad SAF2014-52400-R Ministerio de Economía y Competitividad SAF2017-87846-R |
Drets: | Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, sempre que no sigui amb finalitats comercials, i sempre que es reconegui l'autoria de l'obra original. |
Llengua: | Anglès |
Document: | Article ; Versió publicada |
Matèria: | HCV ; Minority mutants ; NGS ; Antiviral resistance |
Publicat a: | Infection and drug resistance, Vol. 11 (november 2018) , p. 2207-2210, ISSN 1178-6973 |
4 p, 131.8 KB |