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HPV genotyping in 143 cases of unusual types carcinoma of the uterine cervix |
LIAO Xin ZOU Juan HUANG Anliang YU Na SUN Liang▲ |
Department of Pathology, West China Second Hospital of Sichuan University Key Laboratory of Birth Defects and Related Diseases of Women and Children Ministry of Education, Sichuan Province, Chengdu 610041, China |
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Abstract Objective To provide more evidence for the estimation of potential impact of HPV vaccine, by analyzing the distribution of HPV genotypes in unusual types of cervical cancer. Methods From September 2014 to September 2017, in West China Second Hospital of Sichuan University, unusual types of cervical cancer were collected, HPV genotyping was done by use of PCR and Luminex fluorescence technique. Relative contribution of HPV types in ICCs was expressed as the percentages of type-specifc cases among HPV-positive cases. Multiple infections were incorporated into single infection using the method of proportional weighting attribution (PWA). Results In the study, 143 invasive cervical cancer cases were included, and 130 (90.91%) cases were positive for HPV DNA, among them, 60 (46.15%) cases were adenocarcinoma (ADC), 46 (35.38%) cases were adenosquamous cell carcinoma (ADSCC), 8 (6.15%) cases were neuroendocrine carcinoma (NECA) and 16 (12.31%) cases were mixed type, 109 (83.84%) cases were present as single infections and 21 (16.15%) cases were present as multiple infections. HPV types 16 and 18 were the major types in each histological group. The PWA of HPV 16/18 to ADC, ADSCC, NECA and mixed type were 85.88%, 93.39%, 100.00% and 83.32%, respectively. Conclusion HPV 16 and 18 infections are predominant in these unusual types of cervical cancer. The 9-valent HPV vaccine has some improvement for prevention of these unusual types of cervical cancer.
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