Abstract

Purpose: This study assessed the clinical significance of c-myc gene copy number gain detected by fluorescence in situ hybridization (FISH) in the prediction of cervical intraepithelial neoplasia (CIN) progression. Methods: We retrospectively investigated 140 Thinprep cytologic test (TCT) specimens that were histopathologically diagnosed with various stages of cervical neoplasia or malignancy. The specimens were subjected to TCT, human papillomavirus (HPV) testing, and FISH analysis with a c-myc-specific probe. The diagnostic reliability of these methods in determining progression was assessed according to sensitivity, specificity, and κ coefficients. Results: The gene copy number gain of c-myc was significantly higher in the cervical lesion of advanced histologic grade (p < 0.001). For CIN2+ lesions, the sensitivities of TCT, HPV DNA testing, and FISH analysis were 72.3, 92.1, and 64.5%, respectively; the specificities were 81.3, 57.8, and 93.8%, respectively (p < 0.001). The κ coefficients between the c-myc gene test and either the TCT or the HPV DNA test were 0.538 and 0.399, respectively (p < 0.001). Conclusions: FISH analysis of the c-myc oncogene could be a useful adjunct screening method for the early diagnosis of high-grade cervical lesions. Moreover, c-myc may be a new molecular biomarker for the early diagnosis of cervical lesion progression.

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