Performance evaluation of the Abbott RealTime HCV Genotype II for hepatitis C virus genotyping.
BACKGROUND
The Abbott RealTime hepatitis C virus (HCV) Genotype II (Abbott Molecular Inc.) for HCV genotyping, which uses real-time PCR technology, has recently been developed.


METHODS
Accuracy and sensitivity of detection were assessed using the HCV RNA PHW202 performance panel (SeraCare Life Sciences). Consistency with restriction fragment mass polymorphism (RFMP) data, cross-reactivity with other viruses, and the ability to detect minor strains in mixtures of genotypes 1 and 2 were evaluated using clinical samples.


RESULTS
All performance panel viruses were correctly genotyped at levels of >500 IU/mL. Results were 100% concordant with RFMP genotypic data (66/66). However, 5% (3/66) of the samples examined displayed probable genotypic cross reactivity. No cross reactivity with other viruses was evident. Minor strains in the mixtures were not effectively distinguished, even at quantities higher than the detection limit.


CONCLUSIONS
The Abbott RealTime HCV Genotype II assay was very accurate and yielded results consistent with RFMP data. Although the assay has the advantages of automation and short turnaround time, we suggest that further improvements are necessary before it is used routinely in clinical practice. Efforts are needed to decrease cross reactivity among genotypes and to improve the ability to detect minor genotypes in mixed infections.
Sohn
Yong-Hak
YH
Department of Laboratory Medicine, Eulji University Hospital, Daejeon, South Korea.
Ko
Sun-Young
SY
Kim
Myeong Hee
MH
Oh
Heung-Bum
HB
D005838:Genotype; D016174:Hepacivirus / Q000145:classification* / Q000235:genetics / Q000302:isolation & purification; D006526:Hepatitis C / Q000821:virology*; D006801:Humans; D016133:Polymerase Chain Reaction; D012367:RNA, Viral / Q000032:analysis / Q000235:genetics; D011933:Reagent Kits, Diagnostic
D012367:RNA, Viral; D011933:Reagent Kits, Diagnostic