Tumor-Associated Trypsin Inhibitor (TATI) as a Biomarker of Poor Prognosis in Oropharyngeal Squamous Cell Carcinoma Irrespective of HPV Status

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Sjöblom, A.; Stenman, U.-H.; Hagström, J.; Jouhi, L.; Haglund, C.; Syrjänen, S.; Mattila, P.; Mäkitie, A.; Carpén, T. Tumor-Associated Trypsin Inhibitor (TATI) as a Biomarker of Poor Prognosis in Oropharyngeal Squamous Cell Carcinoma Irrespective of HPV Status. Cancers 2021, 13, 2811.

Title: Tumor-Associated Trypsin Inhibitor (TATI) as a Biomarker of Poor Prognosis in Oropharyngeal Squamous Cell Carcinoma Irrespective of HPV Status
Author: Sjöblom, Anni; Stenman, Ulf-Håkan; Hagström, Jaana; Jouhi, Lauri; Haglund, Caj; Syrjänen, Stina; Mattila, Petri; Mäkitie, Antti; Carpén, Timo
Publisher: Multidisciplinary Digital Publishing Institute
Date: 2021-06-04
URI: http://hdl.handle.net/10138/330855
Abstract: Background: We studied the role of tumor-associated trypsin inhibitor (TATI) in serum and in tumor tissues among human papillomavirus (HPV)-positive and HPV-negative OPSCC patients. Materials and methods: The study cohort included 90 OPSCC patients treated at the Helsinki University Hospital (HUS), Helsinki, Finland, in 2012–2016. TATI serum concentrations (S-TATIs) were determined by an immunofluorometric assay. Immunostaining was used to assess tissue expression. HPV status was determined with a combination of p16 immunohistochemistry and HPV DNA PCR genotyping. The survival endpoints were overall survival (OS) and disease-specific survival (DSS). Results: A significant correlation was found between S-TATI positivity and poor OS (<i>p</i> &lt; 0.001) and DSS (<i>p</i> = 0.04) in all patients. In HPV-negative cases, S-TATI positivity was linked to poor OS (<i>p</i> = 0.01) and DSS (<i>p</i> = 0.05). In HPV-positive disease, S-TATI positivity correlated with poor DSS (<i>p</i> = 0.01). S-TATI positivity was strongly associated with HPV negativity. TATI serum was negatively linked to a lower cancer stage. TATI expression in peritumoral lymphocytes was associated with favorable OS (<i>p</i> &lt; 0.025) and HPV positivity. TATI expression in tumor and in peritumoral lymphocytes correlated with lower cancer stages. Conclusion: Our results suggest that S-TATI positivity may be a biomarker of poor prognosis in both HPV-positive and HPV-negative OPSCC.


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