TY - JOUR
T1 - Evaluation of the HPV typing INNO-LiPA EXTRA assay on formalin-fixed paraffin-embedded cervical biopsy samples
AU - Alberizzi, Paola
AU - Spinillo, Arsenio
AU - Gardella, Barbara
AU - Cesari, Stefania
AU - Silini, Enrico Maria
PY - 2014
Y1 - 2014
N2 - Background: The HPV genotyping line probe assay INNO-LiPA EXTRA allows the detection of a wider spectrum of viral types compared to the earlier V2 version of the assay. Its performance in formalin-fixed paraffin-embedded tissues is unknown. Objectives: To test the EXTRA assay in HPV genotyping of paired cervical scrapings and corresponding FFPE biopsy specimens. Study design: Paired samples from 188 women with abnormal cytology were examined using the INNO-LiPA HPV genotyping assay, version EXTRA. The assay can simultaneously detect 18 high-risk, 7 low-risk, and 2 unclassified HPV types. Kappa statistics were used to measure interrater agreement between groups. Results: The evaluation of paired cervical scraping and biopsy samples gave a 100% overall agreement for HPV status and of 72.9% (kappa 0.6554) for the number of infecting HPVs. 392 out of 507 individual HPV types were concordant, corresponding to a positive agreement rate of 87.2% (95% CI 84.1-90.3). As to the individual genotypes, the agreement was absolute for HPV 45, 68, 73 (kappa 1), excellent for HPV 6, 11, 16, 18, 31, 35, 39, 44, 51, 52, 53, 54, 56, 69/71 and 82 (kappa 0.7796-0.9714), good for HPV26, 33, 43, 58, 66 and 74 (kappa 0.6768-0.7449), and poor for HPV 59 and 40. These agreement values were comparable to those obtained with the V2 assay. Conclusions: The EXTRA assay provided excellent performance in HPV typing on FFPE samples comparable to the earlier version of the test despite higher complexity and increased coverage of types.
AB - Background: The HPV genotyping line probe assay INNO-LiPA EXTRA allows the detection of a wider spectrum of viral types compared to the earlier V2 version of the assay. Its performance in formalin-fixed paraffin-embedded tissues is unknown. Objectives: To test the EXTRA assay in HPV genotyping of paired cervical scrapings and corresponding FFPE biopsy specimens. Study design: Paired samples from 188 women with abnormal cytology were examined using the INNO-LiPA HPV genotyping assay, version EXTRA. The assay can simultaneously detect 18 high-risk, 7 low-risk, and 2 unclassified HPV types. Kappa statistics were used to measure interrater agreement between groups. Results: The evaluation of paired cervical scraping and biopsy samples gave a 100% overall agreement for HPV status and of 72.9% (kappa 0.6554) for the number of infecting HPVs. 392 out of 507 individual HPV types were concordant, corresponding to a positive agreement rate of 87.2% (95% CI 84.1-90.3). As to the individual genotypes, the agreement was absolute for HPV 45, 68, 73 (kappa 1), excellent for HPV 6, 11, 16, 18, 31, 35, 39, 44, 51, 52, 53, 54, 56, 69/71 and 82 (kappa 0.7796-0.9714), good for HPV26, 33, 43, 58, 66 and 74 (kappa 0.6768-0.7449), and poor for HPV 59 and 40. These agreement values were comparable to those obtained with the V2 assay. Conclusions: The EXTRA assay provided excellent performance in HPV typing on FFPE samples comparable to the earlier version of the test despite higher complexity and increased coverage of types.
KW - Cervix
KW - CIN
KW - Genotypes
KW - Molecular epidemiology
KW - SIL
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U2 - 10.1016/j.jcv.2014.10.016
DO - 10.1016/j.jcv.2014.10.016
M3 - Article
C2 - 25464970
AN - SCOPUS:84922703895
VL - 61
SP - 535
EP - 539
JO - Journal of Clinical Virology
JF - Journal of Clinical Virology
SN - 1386-6532
IS - 4
ER -