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Published in: BMC Cancer 1/2015

Open Access 01-12-2015 | Research article

The DNA load of six high-risk human papillomavirus types and its association with cervical lesions

Authors: Luisa Del Río-Ospina, Sara Cecilia Soto-De León, Milena Camargo, Darwin Andrés Moreno-Pérez, Ricardo Sánchez, Antonio Pérez-Prados, Manuel Elkin Patarroyo, Manuel Alfonso Patarroyo

Published in: BMC Cancer | Issue 1/2015

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Abstract

Background

Analysing human papillomavirus (HPV) viral load is important in determining the risk of developing cervical cancer (CC); most knowledge to date regarding HPV viral load and cervical lesions has been related to HPV-16. This study evaluated the association between the viral load of the six most prevalent high-risk viral types in Colombia and cervical intraepithelial neoplasia (CIN) frequency.

Methods

114 women without CIN and 59 women having CIN confirmed by colposcopy, all of them positive by conventional PCR for HPV infection in the initial screening, were included in the study. Samples were tested for six high-risk HPV types to determine viral copy number by real-time PCR. Crude and adjusted odds ratios (ORa) were estimated for evaluating the association between each viral type’s DNA load and the risk of cervical lesions occurring.

Results

The highest viral loads were identified for HPV-33 in CIN patients and for HPV-31 in patients without lesions (9.33 HPV copies, 2.95 interquartile range (IQR); 9.41 HPV copies, 2.58 IQR). Lesions were more frequent in HPV-16 patients having a low viral load (3.53 ORa, 1.16–10.74 95%CI) compared to those having high HPV-16 load (2.62 ORa, 1.08–6.35 95%CI). High viral load in HPV-31 patients was associated with lower CIN frequency (0.34 ORa, 0.15–0.78 95%CI).

Conclusions

An association between HPV DNA load and CIN frequency was seen to be type-specific and may have depended on the duration of infection. This analysis has provided information for understanding the effect of HPV DNA load on cervical lesion development.
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Metadata
Title
The DNA load of six high-risk human papillomavirus types and its association with cervical lesions
Authors
Luisa Del Río-Ospina
Sara Cecilia Soto-De León
Milena Camargo
Darwin Andrés Moreno-Pérez
Ricardo Sánchez
Antonio Pérez-Prados
Manuel Elkin Patarroyo
Manuel Alfonso Patarroyo
Publication date
01-12-2015
Publisher
BioMed Central
Published in
BMC Cancer / Issue 1/2015
Electronic ISSN: 1471-2407
DOI
https://doi.org/10.1186/s12885-015-1126-z

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Keynote webinar | Spotlight on antibody–drug conjugates in cancer

Antibody–drug conjugates (ADCs) are novel agents that have shown promise across multiple tumor types. Explore the current landscape of ADCs in breast and lung cancer with our experts, and gain insights into the mechanism of action, key clinical trials data, existing challenges, and future directions.

Dr. Véronique Diéras
Prof. Fabrice Barlesi
Developed by: Springer Medicine