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P16INx4a protein expression associated with Head and Neck Squamous Cell Carcinoma: A perspective of a public health reference service in Sao Paulo

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do Nascimento, Mariah Cristina Antunes ; Galbiatti-Dias, Ana Livia Silva ; Figueiredo, Lucas Brumato ; Marzochi, Ludimila Leite ; Castanhole-Nunes, Marcia Maria Urbanin ; Andrade, Rafael Felipe Maciel ; Maniglia, Jose Victor ; Castiglioni, Lilian ; de Oliveira-Cucolo, Juliana Garcia ; Pavarino, Erika Cristina ; Goloni-Bertollo, Eny Maria
Número total de Autores: 11
Tipo de documento: Artigo Científico
Fonte: Brazilian Journal of Otorhinolaryngology; v. 92, n. 2, p. 8-pg., 2026-03-01.
Resumo

Objectives: Human Papillomavirus (HPV) may be a predictive biomarker predictor for clinical outcome and influence treatment decisions in patients with Head and Neck Squamous Cell Carcinoma (HNSCC). Methods: We evaluated 253 patients with HNSCC from state of Sao Paulo, Brazil. The influence of p16INx4a expression was analyzed with epidemiological and clinical variables. Results: In total, 32.4% of tumors studied had positive (+) p16INx4a protein expression, and 67.6% had negative. The variables were similar in both groups being the mostly with age under 64-years, male, white race, functional illiterate, smokers and alcoholics. The most affected primary site was oral cavity with T3/T4 tumoral stage, N1/ N2/N3 nodals, M0 metastasis and III/IV clinical stage. Patients with oropharyngeal primary site and (+) p16INx4a, clinical staging III and chemotherapy treatment had worse survival. The median time of distant metastasis-free was 38.3-months in oropharyngeal (+) p16INx4a and 15.1-months in negative (-) p16INx4a. Conclusion: In the present study, the epidemiological variables are similar in both groups (Positive and negative p16INx4a expression): age under 64-years, male, white, functionally illiterate, smokers and alcoholics. There is no association of p16INx4a expression with primary site, however, the (-) p16INx4a shows better overall survival, higher frequencies in distant metastasis and less free time of the disease. Although the literature shows a greater survival in oropharynx (+) p16INx4a, our results are contradictory. It is suggested that future studies in different regions and with a larger sample size should be carried out to confirm these findings, because the patients who participated in the present study are only from a specific region of Brazil. Level of evidence: 2B. (AU)

Processo FAPESP: 18/26166-6 - Biomarcadores e células-tronco tumorais no tratamento do câncer de cabeça e pescoço
Beneficiário:Eny Maria Goloni Bertollo
Modalidade de apoio: Auxílio à Pesquisa - Regular