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Δευτέρα 7 Ιανουαρίου 2019

Survival impact of treatment delays in surgically managed oropharyngeal cancer and the role of human papillomavirus status

Abstract

Background

The impact of treatment delays on survival in oropharyngeal cancer and whether the effect varies by human papillomavirus (HPV) status have yet to be defined.

Methods

Retrospective analysis of the survival impact of time from diagnosis to surgery (DTS), surgery to radiation (SRT), and duration of radiation (RTD) for patients in the National Cancer Database with resected oropharyngeal cancer who underwent adjuvant radiation from 2010 to 2014.

Results

We identified optimal thresholds of 30, 40, and 51 days for DTS, SRT, and RTD, respectively, with treatment times exceeding these thresholds associated with significantly worse overall survival. Prolonged SRT and RTD were associated with mortality regardless of HPV status, although rising DTS was only predictive among patients with HPV‐negative tumors.

Conclusions

Treatment delays significantly impact survival in oropharyngeal cancer. The consequences of prolonged DTS may be stronger in HPV‐negative than HPV‐positive disease. These data serve as a foundation for future research and clinical management.



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