Impact of the interval between neoadjuvant concurrent chemoradiotherapy and esophagectomy in the modern era: A population-based propensity-score-matched retrospective cohort study in Asia

Yao Hung Kuo, Yu Wen Chien, Pin Ru Chen, Chun Lung Feng, Chia Chin Li, Chun Ru Chien

Research output: Contribution to journalArticle

Abstract

Background: Neoadjuvant concurrent chemoradiotherapy (nCCRT) is one of the standard-of-care options for locally advanced esophageal squamous cell carcinoma (LA-ESqCC). The optimal interval between nCCRT and esophagectomy is unknown. Methods: We constructed a propensity-score-matched [1:1 for long (8-12 weeks) vs short (4-7 weeks) intervals] cohort of LA-ESqCC patients who were diagnosed from 2011 to 2015 and treated with nCCRT via the Taiwan Cancer Registry and related databases. We compared the hazard ratios (HRs) of death using a robust variance estimator. We also evaluated alternative covariables, outcomes, and interval definitions. Results: Our study population included 80 patients for each group; groups were balanced with respect to the observed covariables. There was no significant difference for the HR of death [1.22; 95% confidence interval 0.78-1.91, P = 0.39] when the long interval group was compared to the short interval group. There were also no significant differences when alternative covariables, outcomes, or interval definitions were evaluated. Conclusions: In this population-based study in modern Asia, we found that for LA-ESqCC patients treated with nCCRT and esophagectomy, overall survival was similar for either long or short intervals between nCCRT and esophagectomy. Randomized controlled trials are needed to verify this finding.

Original languageEnglish
Article number222
JournalWorld Journal of Surgical Oncology
Volume17
Issue number1
DOIs
Publication statusPublished - 2019 Dec 19

All Science Journal Classification (ASJC) codes

  • Surgery
  • Oncology

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