The association of p16(INK4A) and fragile histidine triad gene expression and cervical lesions.

Abstract:

OBJECTIVE:This cross-sectional study was intended to assess the association between immunohistochemical analysis of p16 and fragile histidine triad (FHIT) and the presence of precancerous cervical lesions. MATERIALS AND METHODS:Women seen at Pérola Byington Hospital, São Paulo, Brazil, with histologically confirmed cervicitis (n = 31), cervical intraepithelial neoplasia (CIN) 1 (n = 30), CIN 2,3 (n = 30), and cervical cancer (n = 7) had also cervical material collected for liquid-based cytology, human papillomavirus Hybrid Capture 2 (HC2) test, and p16 and FHIT immunohistochemical reactions. RESULTS:p16 and FHIT reactions were scored as the following: <1%, 1% to 5%, >5% to 25%, and >25%. Receiver operating curve analysis was used to select p16 and FHIT score cutoffs for further categorical analyses. All but one of the 37 CIN 2,3/cancer cases had a p16 score of greater than 1% to 5%. Among the 61 cervicitis/CIN 1 cases, 46 (75%) had a p16 score lower than 1% to 5%. In contrast, no association of FHIT expression and severity of cervical lesions could be demonstrated in this data set. Receiver operating curve analyses suggested the score of 1% to 5% for p16 as the cutoff that best discriminates CIN 2,3/cancer from cervicitis/CIN 1. No cutoff for FHIT scores could be suggested with data set. CONCLUSIONS:p16, but not FHIT expression, has the potential to be used as complementary diagnostic tool to investigate human papillomavirus-induced cervical lesions, if these results are confirmed in larger studies.

journal_name

J Low Genit Tract Dis

authors

Longatto-Filho A,Etlinger D,Pereira SM,Kanamura CT,di Loreto C,Santos Gda C,Makabe S,Marques JA,Santoro CL,das Dores GB,Castelo A

doi

10.1097/LGT.0b013e31802efb9e

subject

Has Abstract

pub_date

2007-07-01 00:00:00

pages

151-7

issue

3

eissn

1089-2591

issn

1526-0976

pii

00128360-200707000-00006

journal_volume

11

pub_type

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