Expanded classification of hepatitis C virus into 7 genotypes and 67 subtypes: updated criteria and genotype assignment web resource
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Expanded classification of hepatitis C virus into 7 genotypes and 67 subtypes : updated criteria and genotype assignment web resource. / Smith, Donald B; Bukh, Jens; Kuiken, Carla; Muerhoff, A Scott; Rice, Charles M; Stapleton, Jack T; Simmonds, Peter.
In: Hepatology, Vol. 59, No. 1, 01.2014, p. 318-27.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Expanded classification of hepatitis C virus into 7 genotypes and 67 subtypes
T2 - updated criteria and genotype assignment web resource
AU - Smith, Donald B
AU - Bukh, Jens
AU - Kuiken, Carla
AU - Muerhoff, A Scott
AU - Rice, Charles M
AU - Stapleton, Jack T
AU - Simmonds, Peter
N1 - © 2013 by the American Association for the Study of Liver Diseases.
PY - 2014/1
Y1 - 2014/1
N2 - UNLABELLED: The 2005 consensus proposal for the classification of hepatitis C virus (HCV) presented an agreed and uniform nomenclature for HCV variants and the criteria for their assignment into genotypes and subtypes. Since its publication, the available dataset of HCV sequences has vastly expanded through advancement in nucleotide sequencing technologies and an increasing focus on the role of HCV genetic variation in disease and treatment outcomes. The current study represents a major update to the previous consensus HCV classification, incorporating additional sequence information derived from over 1,300 (near-)complete genome sequences of HCV available on public databases in May 2013. Analysis resolved several nomenclature conflicts between genotype designations and using consensus criteria created a classification of HCV into seven confirmed genotypes and 67 subtypes. There are 21 additional complete coding region sequences of unassigned subtype. The study additionally describes the development of a Web resource hosted by the International Committee for Taxonomy of Viruses (ICTV) that maintains and regularly updates tables of reference isolates, accession numbers, and annotated alignments (http://talk.ictvonline.org/links/hcv/hcv-classification.htm). The Flaviviridae Study Group urges those who need to check or propose new genotypes or subtypes of HCV to contact the Study Group in advance of publication to avoid nomenclature conflicts appearing in the literature. While the criteria for assigning genotypes and subtypes remain unchanged from previous consensus proposals, changes are proposed in the assignment of provisional subtypes, subtype numbering beyond "w," and the nomenclature of intergenotypic recombinant.CONCLUSION: This study represents an important reference point for the consensus classification of HCV variants that will be of value to researchers working in clinical and basic science fields.
AB - UNLABELLED: The 2005 consensus proposal for the classification of hepatitis C virus (HCV) presented an agreed and uniform nomenclature for HCV variants and the criteria for their assignment into genotypes and subtypes. Since its publication, the available dataset of HCV sequences has vastly expanded through advancement in nucleotide sequencing technologies and an increasing focus on the role of HCV genetic variation in disease and treatment outcomes. The current study represents a major update to the previous consensus HCV classification, incorporating additional sequence information derived from over 1,300 (near-)complete genome sequences of HCV available on public databases in May 2013. Analysis resolved several nomenclature conflicts between genotype designations and using consensus criteria created a classification of HCV into seven confirmed genotypes and 67 subtypes. There are 21 additional complete coding region sequences of unassigned subtype. The study additionally describes the development of a Web resource hosted by the International Committee for Taxonomy of Viruses (ICTV) that maintains and regularly updates tables of reference isolates, accession numbers, and annotated alignments (http://talk.ictvonline.org/links/hcv/hcv-classification.htm). The Flaviviridae Study Group urges those who need to check or propose new genotypes or subtypes of HCV to contact the Study Group in advance of publication to avoid nomenclature conflicts appearing in the literature. While the criteria for assigning genotypes and subtypes remain unchanged from previous consensus proposals, changes are proposed in the assignment of provisional subtypes, subtype numbering beyond "w," and the nomenclature of intergenotypic recombinant.CONCLUSION: This study represents an important reference point for the consensus classification of HCV variants that will be of value to researchers working in clinical and basic science fields.
KW - Genotype
KW - Hepacivirus
U2 - 10.1002/hep.26744
DO - 10.1002/hep.26744
M3 - Journal article
C2 - 24115039
VL - 59
SP - 318
EP - 327
JO - Hepatology
JF - Hepatology
SN - 0270-9139
IS - 1
ER -
ID: 131071788