Prognostic value of a 15-gene hypoxia classifier in oropharyngeal cancer treated with accelerated chemoradiotherapy.
Strahlenther Onkol
; 196(6): 552-560, 2020 Jun.
Article
em En
| MEDLINE
| ID: mdl-32080773
ABSTRACT
PURPOSE:
A 15-gene hypoxia classifier has been developed and validated as a predictive factor for patients with head and neck squamous cell carcinoma treated with radiotherapy and nimorazole. This paper aimed to investigate the role of this hypoxia classifier as a prognostic factor for patients with oropharyngeal cancer (OPC) treated with accelerated chemoradiotherapy.METHODS:
P16 and 15-gene hypoxia classifier status, categorising tumours as more or less hypoxic, were determined for 136 OPC patients. Locoregional recurrence rate (LRR) and overall survival (OS) were estimated with cumulative incidence function and Kaplan-Meier method, respectively, stratified according to p16 and hypoxia status.RESULTS:
P16-positive patients (34.6%) had significantly better LRR and OS than p16-negative patients. The 5year LRR of patients with more hypoxic OPC was similar to those with less hypoxic OPC in the overall patient population (27.3% versus 25.1%; pâ¯= 0.98; HRâ¯= 1.01 [CI95% 0.47;2.17]) and in the p16-negative OPC (36.4% versus 30.1%; pâ¯= 0.70; HRâ¯= 1.17 [CI95% 0.53;2.56]). No significant OS differences could be observed in neither p16-negative nor p16-positive subgroup with a 5-year OS for p16-negative more hypoxic OPC of 44.2% versus 49.0% in the less hypoxic OPC (pâ¯= 0.92; HR 0.97 [CI95% 0.51;1.84]).CONCLUSION:
No significant outcome differences were observed between more or less hypoxic tumours, as determined by the 15-gene hypoxia classifier. These results suggest that the 15-gene hypoxia classifier may not have prognostic value in an OPC patient cohort treated with accelerated chemoradiotherapy.Palavras-chave
Texto completo:
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Base de dados:
MEDLINE
Assunto principal:
Carcinoma de Células Escamosas
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Neoplasias Orofaríngeas
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Hipóxia Celular
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Genes p16
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Imagem de Difusão por Ressonância Magnética
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Quimiorradioterapia
Tipo de estudo:
Observational_studies
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Prognostic_studies
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Risk_factors_studies
Limite:
Adult
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Aged
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Aged80
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Female
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Humans
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Male
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Middle aged
Idioma:
En
Ano de publicação:
2020
Tipo de documento:
Article