p16 Influence on Laryngeal Squamous Cell Carcinoma Relapse and Survival.

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p16 Influence on Laryngeal Squamous Cell Carcinoma Relapse and Survival.

Otolaryngol Head Neck Surg. 2019 Jan 15;:194599818821910

Authors: Sánchez Barrueco A, González Galán F, Villacampa Aubá JM, Díaz Tapia G, Fernández Hernández S, Martín-Arriscado Arroba C, Cenjor Español C, Almodóvar Álvarez C

Abstract
OBJECTIVE: (1) To identify p16 protein in laryngeal squamous cell carcinoma (LSCC) specimens and to correlate it with the presence of human papillomavirus (HPV) found in these specimens from a previous study. (2) To analyze p16 impact on 10-year overall and disease-free survival.
STUDY DESIGN: Retrospective case series with oncologic database chart review.
SETTING: Academic tertiary care hospital.
SUBJECTS: A total of 123 samples of LSCC (taken from the glottis only) from patients treated with primary surgical resection between 1977 and 2005.
METHODS: p16 protein expression was analyzed through immunohistochemistry and compared with the presence of HPV established in our previous studies. Results were compared with histologic, clinicopathologic, and survival parameters, with a 10-year follow-up.
RESULTS: Of the samples, 39.02% were positive for p16, but only 11.38% were positive for both p16 and HPV. The p16+ cohort showed a significant improvement in disease-free survival ( P = .0022); statistical significance was not achieved for overall survival. p16+ cases had fewer relapses over time, with no relapses after a 2-year follow-up. Age at the time of diagnosis and tobacco consumption were the only epidemiologic factors that influenced overall survival.
CONCLUSION: The expression of p16 protein was a beneficial prognostic factor for disease-free survival among patients with LSCC of the glottis, with no relapses after a 2-year follow-up.

PMID: 30642220 [PubMed - as supplied by publisher]

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