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Prevalence of high-risk human papillomavirus and its genotype distribution in head and neck squamous cell carcinomas

Journal of Pathology and Translational Medicine 2020년 54권 5호 p.411 ~ 418
김유일, 주영훈, 김민식, 이연수,
소속 상세정보
김유일 ( Kim Yu-Il ) - Catholic University College of Medicine Bucheon St. Mary’s Hospital Department of Hospital Pathology
주영훈 ( Joo Young-Hoon ) - Catholic University College of Medicine Bucheon St. Mary’s Hospital Department of Otolaryngology-Head and Neck Surgery
김민식 ( Kim Min-Sik ) - Catholic University College of Medicine Seoul St. Mary’s Hospital Department of Otolaryngology-Head and Neck Surgery
이연수 ( Lee Youn-Soo ) - Catholic University College of Medicine Seoul St. Mary’s Hospital Department of Hospital Pathology

Abstract


Background: High-risk (HR) human papillomavirus (HPV) is found in a subset of head and neck (HN) squamous cell carcinomas (SCCs). For oropharyngeal SCCs, HR HPV positivity is known to be associated with good prognosis, and a separate staging system for HPV-associated carcinomas using p16 immunohistochemistry (IHC) as a surrogate test has been adopted in the 8th American Joint Committee on Cancer staging system. We examined the HR HPV status and the genotype distribution in five HN subsites.

Methods: Formalin-fixed paraffin-embedded tissue sections were used for p16 IHC and DNA extraction. HPV DNA detection and genotyping were done employing either a DNA chip-based or real-time polymerase chain reaction?based method.

Results: During 2011?2019, a total of 466 SCCs were tested for HPV DNA with 34.1% positivity for HR HPV. Among HN subsites, the oropharynx showed the highest HR HPV prevalence (149/205, 75.1%), followed by the sinonasal tract (3/14, 21.4%), larynx (5/43, 11.6%), hypopharynx (1/38, 2.6%), and oral cavity (1/166, 0.6%). The most common HPV genotype was HPV16 (84.3%) followed by HPV35 (6.9%) and HPV33 (4.4%). Compared with HR HPV status, the sensitivity and specificity of p16 IHC were 98.6% and 94.3% for the oropharynx, and 99.2% and 93.8% for the tonsil, respectively.

Conclusions: Using a Korean dataset, we confirmed that HR HPV is most frequently detected in oropharyngeal SCCs. p16 positivity showed a good concordance with HR HPV DNA for oropharyngeal and especially tonsillar carcinomas. The use of p16 IHC may further be extended to predict HR HPV positivity in sinonasal tract SCCs.

키워드

Human papillomavirus; Head and neck; Squamous cell carcinoma; Oropharynx

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