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Eight-type human papillomavirus E6/E7 oncoprotein detection as a novel and promising triage strategy for managing HPV-positive women.
Int J Cancer ; 144(1): 34-42, 2019 01 01.
Artigo em Inglês | MEDLINE | ID: mdl-29943809
The management of HPV-positive women becomes particularly crucial in cervical cancer screening. Here we assessed whether detection of E6 or E7 oncoproteins targeting eight most prevalent HPV types could serve as a promising triage option. Women (N = 1,416) aged 50-60 from Shanxi, China underwent screening with HPV testing and liquid-based cytology (LBC), with any positive results referring to colposcopy and biopsy if necessary. Women with HPV-positive results received further tests using DNA-based genotyping, E6 or E7 oncoprotein detection targeting HPV16/18 (for short: E6 (16/18) Test) or HPV16/18/31/33/35/45/52/58 (for short: E6/E7 (8 types) Test), respectively. Among HPV-positive women, E6/E7 (8 types) oncoproteins had lower positivity (17.37%) compared to DNA-based genotyping for same eight types (58.30%) and LBC with ASC-US threshold (50.97%); HPV16 was the genotype showing the highest frequency (8.49%) for oncoprotein detection followed by HPV52 (3.47%), 58 (2.32%), 33 (1.54%), 18 (1.16%), 45 (0.77%), 35 (0.39%) and 31 (0%). For detection of cervical intraepithelial neoplasia Grade 3 or higher (CIN3+), E6/E7 (8 types) Test had similar sensitivity (100.00%) and superior specificity (85.94%) as well as positive predictive value (PPV, 22.22%) compared to both LBC and DNA-based genotyping (8 types); For detection of CIN2+, E6/E7 (8 types) Test was less sensitive (67.74%) but still more specific (89.47%) and risk predictive with PPV of 46.67%. Notably, E6/E7 (8 types) Test remarkably decreased the number of colposcopies needed to detect one CIN2+ and CIN3+ (2.14 and 4.50). E6/E7 oncoprotein detection showed a good "trade-off" between sensitivity and specificity with more efficient colposcopy referrals, which is of great importance to maximize the benefits of HPV-based screening program, especially applicable for the areas with high HPV prevalence and low-resources.





Texto completo: Disponível Coleções: Bases de dados internacionais Base de dados: MEDLINE Assunto principal: Proteínas Repressoras / Neoplasias do Colo do Útero / Proteínas Oncogênicas Virais / Infecções por Papillomavirus / Proteínas E7 de Papillomavirus / Detecção Precoce de Câncer Aspecto clínico: Diagnóstico / Etiologia / Predição / Prognóstico Limite: Feminino / Humanos / Meia-Idade Idioma: Inglês Revista: Int J Cancer Ano de publicação: 2019 Tipo de documento: Artigo País de afiliação: China