Comparative Study of IS 6110 Restriction Fragment Length Polymorphism and Variable-Number Tandem-Repeat Typing of Mycobacterium tuberculosis Isolates in the Netherlands, Based on a 5-Year Nationwide Survey

ABSTRACT In order to switch from IS 6110 and polymorphic GC-rich repetitive sequence (PGRS) restriction fragment length polymorphism (RFLP) to 24-locus variable-number tandem-repeat (VNTR) typing of Mycobacterium tuberculosis complex isolates in the national tuberculosis control program in The Netherlands, a detailed evaluation on discriminatory power and agreement with findings in a cluster investigation was performed on 3,975 tuberculosis cases during the period of 2004 to 2008. The level of discrimination of the two typing methods did not differ substantially: RFLP typing yielded 2,733 dist... Mehr ...

Verfasser: de Beer, Jessica L.
van Ingen, Jakko
de Vries, Gerard
Erkens, Connie
Sebek, Maruschka
Mulder, Arnout
Sloot, Rosa
van den Brandt, Anne-Marie
Enaimi, Mimount
Kremer, Kristin
Supply, Philip
van Soolingen, Dick
Dokumenttyp: Artikel
Erscheinungsdatum: 2013
Reihe/Periodikum: Journal of Clinical Microbiology ; volume 51, issue 4, page 1193-1198 ; ISSN 0095-1137 1098-660X
Verlag/Hrsg.: American Society for Microbiology
Sprache: Englisch
Permalink: https://search.fid-benelux.de/Record/base-27579239
Datenquelle: BASE; Originalkatalog
Powered By: BASE
Link(s) : http://dx.doi.org/10.1128/jcm.03061-12

ABSTRACT In order to switch from IS 6110 and polymorphic GC-rich repetitive sequence (PGRS) restriction fragment length polymorphism (RFLP) to 24-locus variable-number tandem-repeat (VNTR) typing of Mycobacterium tuberculosis complex isolates in the national tuberculosis control program in The Netherlands, a detailed evaluation on discriminatory power and agreement with findings in a cluster investigation was performed on 3,975 tuberculosis cases during the period of 2004 to 2008. The level of discrimination of the two typing methods did not differ substantially: RFLP typing yielded 2,733 distinct patterns compared to 2,607 in VNTR typing. The global concordance, defined as isolates labeled unique or identically distributed in clusters by both methods, amounted to 78.5% ( n = 3,123). Of the remaining 855 cases, 12% ( n = 479) of the cases were clustered only by VNTR, 7.7% ( n = 305) only by RFLP typing, and 1.8% ( n = 71) revealed different cluster compositions in the two approaches. A cluster investigation was performed for 87% ( n = 1,462) of the cases clustered by RFLP. For the 740 cases with confirmed or presumed epidemiological links, 92% were concordant with VNTR typing. In contrast, only 64% of the 722 cases without an epidemiological link but clustered by RFLP typing were also clustered by VNTR typing. We conclude that VNTR typing has a discriminatory power equal to IS 6110 RFLP typing but is in better agreement with findings in a cluster investigation performed on an RFLP-clustering-based cluster investigation. Both aspects make VNTR typing a suitable method for tuberculosis surveillance systems.