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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
Comparison of human papillomavirus detection between freshly frozen tissue and paraffin embedded tissue of invasive cervical cancer
Infectious Agents and Cancer, Volume 5, No. 1, Article 15, Year 2010
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Description
Background. Human Papillomavirus (HPV) detection results comparing paraffin embedded cervical tissue and other cervical specimens have been done with varying degrees of agreement. However, studies comparing freshly frozen specimens and paraffin embedded specimens of invasive cervical carcinomas are lacking. The aim of the study was to compare HPV detection using SPF 10broad-spectrum primers PCR followed by DEIA and genotyping by LiPA25(version 1) between freshly frozen cervical tissue samples and paraffin embedded blocks of cervical tissue from the same patient. There were 171 pairs of paraffin embedded and freshly frozen samples analyzed from cervical carcinoma cases from Kampala, Uganda. Results. 88.9% (95% CI: 83.2%-93.2%) of paraffin embedded samples were HPV positive compared with 90.1% (95% CI: 84.6%-94.1%) of freshly frozen samples, giving an overall agreement in HPV detection between fresh tissue and paraffin embedded tissue at 86.0% (95% CI: 79.8%-90.8%). Although the proportion of HPV positive cases in freshly frozen tissue was higher than those in paraffin blocks, the difference was not statistically significant (p > 0.05). In both types of tissues, single HPV infections were predominant, with HPV16 accounting for 47% of positive cases. Comparison in the overall agreement, taking into accounts not only positivity in general, but also HPV types, showed a 65% agreement (complete agreement of 59.7%, partial agreement of 5.3%) and complete disagreement of 35.0%. HPV detection in squamous cell carcinomas (SCC) and adenocarcinomas (ADC) was similar in fresh tissue or paraffin blocks (p 0.05). p16 immunostaining in samples that had at least one HPV negative results showed that 24 out of 25 cases had an over-expressed pattern. Conclusions. HPV DNA detection was lower among ADC as compared to SCC. However, such differences were minimized when additional p16 testing was added, suggesting that the technical issues may largely explain the HPV negative cases. © 2010 Odida et al; licensee BioMed Central Ltd.
Authors & Co-Authors
Odida, Michael
Sweden, Stockholm
Karolinska Institutet
Uganda, Kampala
Makerere University
de Sanjosé, Sílvia
Spain, Hospitalet de Llobregat
Institute Catala Oncologia
Spain, Madrid
Centro de Investigación Biomédica en Red de Epidemiología y Salud Pública
Sandin, Sven S.
Sweden, Stockholm
Karolinska Institutet
Quirós, Beatriz
Spain, Hospitalet de Llobregat
Institute Catala Oncologia
Alemany, Laia
Spain, Hospitalet de Llobregat
Institute Catala Oncologia
Spain, Madrid
Centro de Investigación Biomédica en Red de Epidemiología y Salud Pública
Lloveras, Belén
Spain, Hospitalet de Llobregat
Institute Catala Oncologia
Spain, Barcelona
Hospital Del Mar
Quint, Wim G.V.
Netherlands, Voorburg
Ddl Diagnostic Laboratory
Kleter, Bernhard
Netherlands, Voorburg
Ddl Diagnostic Laboratory
Alejo, María
Spain, Hospitalet de Llobregat
Institute Catala Oncologia
Spain, Barcelona
Hospital General de Vic
van Doorn, Leen Jan
Netherlands, Voorburg
Ddl Diagnostic Laboratory
Weiderpass, Elisabete
Sweden, Stockholm
Karolinska Institutet
Norway, Tromso
Uit Norges Arktiske Universitet
Finland, Helsinki
Folkhälsan
Statistics
Citations: 11
Authors: 11
Affiliations: 9
Identifiers
Doi:
10.1186/1750-9378-5-15
e-ISSN:
17509378
Research Areas
Cancer
Genetics And Genomics
Health System And Policy
Study Locations
Uganda