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  • Title: Comparison of the detection of HPV-16, 18, 31, 33, and 45 by type-specific DNA- and E6/E7 mRNA-based assays of HPV DNA positive women with abnormal Pap smears.
    Author: Salimović-Bešić I, Tomić-Čiča A, Smailji A, Hukić M.
    Journal: J Virol Methods; 2013 Dec; 194(1-2):222-8. PubMed ID: 24036071.
    Abstract:
    This study compares the type-specific human papillomavirus (HPV) DNA test with E6/E7 mRNA detection assay because of their importance in cervical cancer screening programs. A total of 105 women with positive high-risk Hybrid Capture 2 or Abbott RealTime High Risk HPV screening test and an abnormal cervical Pap smear were enrolled in the study. HPV typing was performed by multiplex real-time PCR (HPV High Risk Typing Real-TM test). HPV-16, 18, 31, 33, and 45 E6/E7 mRNAs were determined by type-specific real-time NASBA assay (NucliSENS EasyQ HPV v1.1). Infections caused by HPV-16, 18, 31, 33, and 45 types increased with severity of cervical cytology (p=0.008). Global positivity of five HPV E6/E7 mRNAs was lower than DNA positivity within women with atypical squamous cells of undetermined significance (p=0.016; p=0.008). High agreement of the tests was found in the groups of women with low-grade (p=1.000; p=0.063) and high-grade squamous intraepithelial lesion (p=0.250; p=0.125). Type-specific agreement of both diagnostic approaches was high regardless of cytology. Based on the found differences between HPV-16, 18, 31, 33, and 45 E6/E7 mRNA and DNA positivity, further study is needed to test the role of mRNA testing in the triage of women with atypical squamous cells of undetermined significance in Pap smear.
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