Efficacy of adjuvant chemotherapy with S-1 in stage II oral squamous cell carcinoma patients: A comparative study using the propensity score matching method.

It has been reported that 20% of early-stage oral squamous cell carcinoma (OSCC) patients treated with surgery alone (SA) may exhibit postoperative relapse within 2-3 years and have poor prognoses. We aimed to determine the safety of S-1 adjuvant chemotherapy and the potential differences in the dis...

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Main Authors: Ryoji Yoshida, Masashi Nagata, Akiyuki Hirosue, Kenta Kawahara, Masafumi Nakamoto, Masatoshi Hirayama, Nozomu Takahashi, Yuichiro Matsuoka, Junki Sakata, Hikaru Nakashima, Hidetaka Arita, Akimitsu Hiraki, Masanori Shinohara, Ken Kikuchi, Hideki Nakayama
Format: Article
Language:English
Published: Public Library of Science (PLoS) 2020-01-01
Series:PLoS ONE
Online Access:https://doi.org/10.1371/journal.pone.0231656
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author Ryoji Yoshida
Masashi Nagata
Akiyuki Hirosue
Kenta Kawahara
Masafumi Nakamoto
Masatoshi Hirayama
Nozomu Takahashi
Yuichiro Matsuoka
Junki Sakata
Hikaru Nakashima
Hidetaka Arita
Akimitsu Hiraki
Masanori Shinohara
Ken Kikuchi
Hideki Nakayama
author_facet Ryoji Yoshida
Masashi Nagata
Akiyuki Hirosue
Kenta Kawahara
Masafumi Nakamoto
Masatoshi Hirayama
Nozomu Takahashi
Yuichiro Matsuoka
Junki Sakata
Hikaru Nakashima
Hidetaka Arita
Akimitsu Hiraki
Masanori Shinohara
Ken Kikuchi
Hideki Nakayama
author_sort Ryoji Yoshida
collection DOAJ
description It has been reported that 20% of early-stage oral squamous cell carcinoma (OSCC) patients treated with surgery alone (SA) may exhibit postoperative relapse within 2-3 years and have poor prognoses. We aimed to determine the safety of S-1 adjuvant chemotherapy and the potential differences in the disease-free survival (DFS) between patients with T2N0 (stage II) OSCC treated with S-1 adjuvant therapy (S-1) and those treated with SA. This single-center retrospective cohort study was conducted at Kumamoto University, between April 2004 and March 2012, and included 95 patients with stage II OSCC. The overall cohort (OC), and propensity score-matched cohort (PSMC) were analyzed. In the OC, 71 and 24 patients received SA and S-1, respectively. The time to relapse (TTR), DFS, and overall survival were better in the S-1 group, but the difference was not significant. In the PSMC, 20 patients each received SA and S-1. The TTR was significantly lower in the S-1 group than in the SA group, while the DFS was significantly improved in the former. S-1 adjuvant chemotherapy may be more effective than SA in early-stage OSCC.
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spelling doaj.art-ae9b149e37c148ca8844fd4c794bccd92022-12-21T18:26:08ZengPublic Library of Science (PLoS)PLoS ONE1932-62032020-01-01154e023165610.1371/journal.pone.0231656Efficacy of adjuvant chemotherapy with S-1 in stage II oral squamous cell carcinoma patients: A comparative study using the propensity score matching method.Ryoji YoshidaMasashi NagataAkiyuki HirosueKenta KawaharaMasafumi NakamotoMasatoshi HirayamaNozomu TakahashiYuichiro MatsuokaJunki SakataHikaru NakashimaHidetaka AritaAkimitsu HirakiMasanori ShinoharaKen KikuchiHideki NakayamaIt has been reported that 20% of early-stage oral squamous cell carcinoma (OSCC) patients treated with surgery alone (SA) may exhibit postoperative relapse within 2-3 years and have poor prognoses. We aimed to determine the safety of S-1 adjuvant chemotherapy and the potential differences in the disease-free survival (DFS) between patients with T2N0 (stage II) OSCC treated with S-1 adjuvant therapy (S-1) and those treated with SA. This single-center retrospective cohort study was conducted at Kumamoto University, between April 2004 and March 2012, and included 95 patients with stage II OSCC. The overall cohort (OC), and propensity score-matched cohort (PSMC) were analyzed. In the OC, 71 and 24 patients received SA and S-1, respectively. The time to relapse (TTR), DFS, and overall survival were better in the S-1 group, but the difference was not significant. In the PSMC, 20 patients each received SA and S-1. The TTR was significantly lower in the S-1 group than in the SA group, while the DFS was significantly improved in the former. S-1 adjuvant chemotherapy may be more effective than SA in early-stage OSCC.https://doi.org/10.1371/journal.pone.0231656
spellingShingle Ryoji Yoshida
Masashi Nagata
Akiyuki Hirosue
Kenta Kawahara
Masafumi Nakamoto
Masatoshi Hirayama
Nozomu Takahashi
Yuichiro Matsuoka
Junki Sakata
Hikaru Nakashima
Hidetaka Arita
Akimitsu Hiraki
Masanori Shinohara
Ken Kikuchi
Hideki Nakayama
Efficacy of adjuvant chemotherapy with S-1 in stage II oral squamous cell carcinoma patients: A comparative study using the propensity score matching method.
PLoS ONE
title Efficacy of adjuvant chemotherapy with S-1 in stage II oral squamous cell carcinoma patients: A comparative study using the propensity score matching method.
title_full Efficacy of adjuvant chemotherapy with S-1 in stage II oral squamous cell carcinoma patients: A comparative study using the propensity score matching method.
title_fullStr Efficacy of adjuvant chemotherapy with S-1 in stage II oral squamous cell carcinoma patients: A comparative study using the propensity score matching method.
title_full_unstemmed Efficacy of adjuvant chemotherapy with S-1 in stage II oral squamous cell carcinoma patients: A comparative study using the propensity score matching method.
title_short Efficacy of adjuvant chemotherapy with S-1 in stage II oral squamous cell carcinoma patients: A comparative study using the propensity score matching method.
title_sort efficacy of adjuvant chemotherapy with s 1 in stage ii oral squamous cell carcinoma patients a comparative study using the propensity score matching method
url https://doi.org/10.1371/journal.pone.0231656
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