Lack of Significant Effects of Chlamydia trachomatis Infection on Cervical Adenocarcinoma Risk: Nested Case-Control Study.

<h4>Background</h4>A role of Chlamydia trachomatis in HPV-induced cervical carcinogenesis has been reported for cervical cancer but studies on cervical adenocarcinoma are limited.<h4>Methods</h4>A total of 1,553 cervical smears taken up to 26 years before diagnosis in a large...

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Main Authors: Vitaly Smelov, Tarik Gheit, Karin Sundström, Alexander Ploner, Sandrine McKay-Chopin, Carina Eklund, Massimo Tommasino, Joakim Dillner
Format: Article
Language:English
Published: Public Library of Science (PLoS) 2016-01-01
Series:PLoS ONE
Online Access:https://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0156215&type=printable
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Summary:<h4>Background</h4>A role of Chlamydia trachomatis in HPV-induced cervical carcinogenesis has been reported for cervical cancer but studies on cervical adenocarcinoma are limited.<h4>Methods</h4>A total of 1,553 cervical smears taken up to 26 years before diagnosis in a large population-based nested case-control study of cervical adenocarcinoma (AC, 132 cases with matched controls), and adenocarcinoma in situ (AIS, 159 cases with matched controls) were tested for C. trachomatis and HPV DNA by a type-specific PCR bead-based multiplex genotyping (TS-MPG) assay.<h4>Results</h4>Only 1.7% of samples were positive for C. trachomatis, with no significant differences between AC/AIS cases and controls. HPV-positivity was detected in 49.3% of C. trachomatis-negative and 65.4% C. trachomatis-positive samples, respectively.<h4>Conclusions</h4>A large prospective study did not find any risk for cervical adenocarcinoma and/or AIS conferred by C. trachomatis infection.<h4>Impact</h4>C. trachomatis appears not to be involved in cervical adenocarcinomas.
ISSN:1932-6203