Abstract
BACKGROUND: Hypoxia is a negative prognostic factor in head and neck squamous cell carcinomas. Under hypoxia, the hypoxia-inducible factor (HIF)-1a transcription factor is overexpressed. We investigated whether there were site differences in HIF-1a expression and its effect on patient outcomes per subsite.
DESIGN/METHOD: A total of 941 patients with HNSCC in the squamous cell carcinoma of the oropharynx (OPSCC, n = 302), oral cavity (OSCC, n = 391), or larynx (LSCC, n = 248) were included. Expression of HIF-1a in tissue samples was investigated using immunohistochemistry. Overall survival (OS), disease-free survival (DFS), and locoregional control (LRC) were analyzed.
RESULTS: HIF-1a expression was higher in OSCC than in LSCC and OPSCC. High HIF-1a expression led to worse prognosis in OPSCC (OS P = .029, DFS P = .085) and LSCC (OS P = .041, DFS P = .011) and better in OSCC (OS P = .055, DFS P = .012). There was no association between HIF-1a and LRC.
CONCLUSIONS: High HIF-1a expression is related to poor outcome in OPSCC and LSCC and better outcome in OSCC.
| Original language | English |
|---|---|
| Pages (from-to) | 745-756 |
| Number of pages | 12 |
| Journal | Head & neck |
| Volume | 43 |
| Issue number | 3 |
| Early online date | 5 Nov 2020 |
| DOIs | |
| Publication status | Published - Mar 2021 |
Keywords
- head and neck neoplasms
- hypoxia
- oropharyngeal neoplasms
- survival
- tumor microenvironment
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