Relative biological effectiveness of carbon ions for head-and-neck squamous cell carcinomas according to human papillomavirus status

Naoto Osu, Daijiro Kobayashi, Katsuyuki Shirai, Atsushi Musha, Hiro Sato, Yuka Hirota, Atsushi Shibata, Takahiro Oike, Tatsuya Ohno

Research output: Contribution to journalArticlepeer-review

Abstract

Carbon-ion radiotherapy (CIRT) has strong antitumor effects and excellent dose conformity. In head-and-neck squamous cell carcinoma (HNSCC), human papillomavirus (HPV) status is a prognostic factor for photon radiotherapy outcomes. However, the effect of HPV status on the sensitivity of HNSCCs to carbon ions remains unclear. Here, we showed that the relative biological effectiveness (RBE) of carbon ions over X-rays was higher in HPV-negative cells than in HSGc-C5 cells, which are used for CIRT dose establishment, whereas the RBE in HPV-positive cells was modest. These data indicate that CIRT is more advantageous in HPV-negative than in HPVpositive HNSCCs.

Original languageEnglish
Article number71
Pages (from-to)1-9
Number of pages9
JournalJournal of Personalized Medicine
Volume10
Issue number3
DOIs
Publication statusPublished - 2020 Sept
Externally publishedYes

Keywords

  • Carbon-ion radiotherapy
  • Head-and-neck tumors
  • Radiosensitivity
  • Relative biological effectiveness
  • Squamous cell carcinoma

ASJC Scopus subject areas

  • Medicine (miscellaneous)

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