Reevaluating and optimizing polyomavirus BK and JC real-time PCR assays to detect rare sequence polymorphisms.

Abstract:

:PCR-based molecular assays have a central role in polyomavirus diagnostics. To assure optimal performance, target sequences should be regularly updated according to newly available sequences. The aim of this study was to review our in-house polyomavirus BK (BKV) and JC (JCV) real-time PCR assays. Database analysis revealed variations in the BKV target region which might affect the assay performance, while no significant changes were found in the JCV target region. We compared two degenerate versions of our BKV primers which accommodated at least 95% of all published genetic variants. Dilutions of cloned viral genomic DNA and probit analysis indicated an analytical sensitivity of the updated BKV assay of 4.15 copies/reaction and that of the JCV assay was 3.37 copies/reaction. The specificity was assessed by testing JCV- and BKV-positive samples that showed no cross-reactivity. The performance of the original and updated BKV assay was compared in 101 urine and 200 plasma samples submitted to our routine diagnostic laboratory revealed similar quantitative results. We conclude that our JCV and updated BKV real-time PCR assays are robust and detect rare variants possibly encountered in the clinical routine.

journal_name

J Clin Microbiol

authors

Dumoulin A,Hirsch HH

doi

10.1128/JCM.02008-10

subject

Has Abstract

pub_date

2011-04-01 00:00:00

pages

1382-8

issue

4

eissn

0095-1137

issn

1098-660X

pii

JCM.02008-10

journal_volume

49

pub_type

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