RT Journal Article T1 Using NS5B Sequencing for Hepatitis C Virus Genotyping Reveals Discordances with Commercial Platforms. A1 Chueca, Natalia A1 Rivadulla, Isidro A1 Lovatti, Rubén A1 Reina, Gabriel A1 Blanco, Ana A1 Fernandez-Caballero, Jose Angel A1 Cardeñoso, Laura A1 Rodriguez-Granjer, Javier A1 Fernandez-Alonso, Miriam A1 Aguilera, Antonio A1 Alvarez, Marta A1 Galán, Juan Carlos A1 García, Federico K1 Antivirales K1 Genotipo K1 Técnicas de genotipaje K1 Hepacivirus K1 España AB We aimed to evaluate the correct assignment of HCV genotypes by three commercial methods-Trugene HCV genotyping kit (Siemens), VERSANT HCV Genotype 2.0 assay (Siemens), and Real-Time HCV genotype II (Abbott)-compared to NS5B sequencing. We studied 327 clinical samples that carried representative HCV genotypes of the most frequent geno/subtypes in Spain. After commercial genotyping, the sequencing of a 367 bp fragment in the NS5B gene was used to assign genotypes. Major discrepancies were defined, e.g. differences in the assigned genotype by one of the three methods and NS5B sequencing, including misclassification of subtypes 1a and 1b. Minor discrepancies were considered when differences at subtype levels, other than 1a and 1b, were observed. The overall discordance with the reference method was 34% for Trugene and 15% for VERSANT HCV2.0. The Abbott assay correctly identified all 1a and 1b subtypes, but did not subtype all the 2, 3, 4 and 5 (34%) genotypes. Major discordances were found in 16% of cases for Trugene HCV, and the majority were 1b- to 1a-related discordances; major discordances were found for VERSANT HCV 2.0 in 6% of cases, which were all but one 1b to 1a cases. These results indicated that the Trugene assay especially, and to a lesser extent, Versant HCV 2.0, can fail to differentiate HCV subtypes 1a and 1b, and lead to critical errors in clinical practice for correctly using directly acting antiviral agents. PB Public Library of Science YR 2016 FD 2016-04-20 LK http://hdl.handle.net/10668/2322 UL http://hdl.handle.net/10668/2322 LA en NO Chueca N, Rivadulla I, Lovatti R, Reina G, Blanco A, Fernandez-Caballero JA, et al. Using NS5B Sequencing for Hepatitis C Virus Genotyping Reveals Discordances with Commercial Platforms. PLoS ONE. 2016; 11(4):e0153754 NO Journal Article; DS RISalud RD Apr 12, 2025