Usefulness of high-risk human papillomavirus mRNA silver in situ hybridization diagnostic assay in oropharyngeal squamous cell carcinomas.

Autor: Gale N; Institute of Pathology, Faculty of Medicine, University of Ljubljana, Korytkova 2, 1000 Ljubljana, Slovenia. Electronic address: nina.gale@mf.uni-lj.si., Poljak M; Institute of Microbiology and Immunology, Faculty of Medicine, University of Ljubljana, Slovenia. Electronic address: mario.poljak@mf.uni-lj.si., Volavšek M; Institute of Pathology, Faculty of Medicine, University of Ljubljana, Korytkova 2, 1000 Ljubljana, Slovenia. Electronic address: metka.volavsek@mf.uni-lj.si., Hošnjak L; Institute of Microbiology and Immunology, Faculty of Medicine, University of Ljubljana, Slovenia. Electronic address: lea.hosnjak@mf.uni-lj.si., Velkavrh D; Institute of Pathology, Faculty of Medicine, University of Ljubljana, Korytkova 2, 1000 Ljubljana, Slovenia. Electronic address: dane.velkavrh@gmail.com., Bolha L; Institute of Pathology, Faculty of Medicine, University of Ljubljana, Korytkova 2, 1000 Ljubljana, Slovenia. Electronic address: luka.bolha@mf.uni-lj.si., Komloš KF; Institute of Microbiology and Immunology, Faculty of Medicine, University of Ljubljana, Slovenia. Electronic address: kristina.fujs@mf.uni-lj.si., Strojan P; Institute of Oncology, Ljubljana, Slovenia. Electronic address: pstrojan@onko-i.si., Aničin A; Department of Otorhinolaryngology and Cervicofacial Surgery, University Clinical Center Ljubljana, Slovenia. Electronic address: aleksandar.anicin@kclj.si., Zidar N; Institute of Pathology, Faculty of Medicine, University of Ljubljana, Korytkova 2, 1000 Ljubljana, Slovenia. Electronic address: nina.zidar@mf.uni-lj.si.
Jazyk: angličtina
Zdroj: Pathology, research and practice [Pathol Res Pract] 2021 Oct; Vol. 226, pp. 153585. Date of Electronic Publication: 2021 Aug 14.
DOI: 10.1016/j.prp.2021.153585
Abstrakt: Aims: The transcriptional activity of high-risk human papillomaviruses (HR-HPV) within oropharyngeal squamous cell carcinomas (OPSCC) has been linked to improved survival of patients. HR-HPV mRNA silver in situ hybridization (SISH) was evaluated on a cohort of OPSCC and compared with viral HPV DNA tests and p16 expression. Clinical outcomes of HPV-driven OPSCC and non-HPV related OPSCC were also studied.
Methods: We evaluated 67 OPSCC and 3 papillomas, obtained from 62 patients, for detection of HR-HPV DNA by PCR tests. The positive samples were additionally studied by the SISH method using three probes of HPV16, HPV18, and HP33, and for p16 expression detected by immunohistochemistry. SISH assays were evaluated for the presence/number and intensity of signals in cancer cells. Prognostic significance of HPV status in our cohort was evaluated with univariate and multivariate statistics.
Results: According to the HR-HPV PCR tests, 46 (69%) OPSCC cases were HPV positive, while three papillomas were negative. Of total 46 HPV-positive OPSCCs, 43 cases were also SISH-positive, while p16 overexpression was found in 45 of 46 HPV positive OPSCC cases. In OPSCC specimens, the sensitivity and specificity of the combined SISH probes (HPV16 and 33) were both 100.00%, when compared to HPV PCR. HPV positivity of the tumors appeared significant for predicting progression-free survival, cause specific survival and overall survival in a multivariate setting.
Conclusions: The recently developed mRNA SISH methodology can detect HPV-driven OPSCCs without any additional test in 79% of cases. Positive SISH signals enable the visualization of viral transcripts required to recognize clinically relevant HPV infection. However, rare and tiny signals require an experienced pathologist to establish a consensus interpretation of results. The currently applied HR-HPV mRNA SISH analysis may serve as a groundwork for additional studies.
(Copyright © 2021 The Authors. Published by Elsevier GmbH.. All rights reserved.)
Databáze: MEDLINE
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