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자료유형
학술저널
저자정보
이윤택 (서울대학교) 민사홍 (서울대학교) 박기범 (서울대학교) 박영석 (분당서울대학교병원) 김지원 (분당서울대학교병원) 안상훈 (서울대학교) 김진원 (서울대학교) 박도중 (분당서울대학교병원) 이근욱 (서울대학교) 김형호 (서울대학교)
저널정보
대한위암학회 Journal of Gastric Cancer Journal of Gastric Cancer 제18권 제1호
발행연도
2018.3
수록면
58 - 68 (11page)
DOI
https://doi.org/10.5230/jgc.2018.18.e5

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Purpose: Generally, adjuvant chemotherapy (AC) should be initiated as soon as possible after surgery to eradicate microscopic cancer cells. In this study, we investigated the effect of early AC on the survival of stage II/III gastric cancer patients. Materials and Methods: Four hundred sixty patients who received AC (S-1 or XELOX) for pathologic stage II/III gastric cancer at Seoul National University Bundang Hospital between January 2008 and December 2014 were included. Patients were divided into 2 groups: early AC administration (within 4 weeks) and late AC administration (more than 4 weeks). Patients in the early AC group (n=174) were matched 1:1 with patients in the late AC group (n=174) by propensity scoring to adjust for clinical differences. Three-year relapse-free survival (RFS) was evaluated according to the timing of AC. Results: Three-year RFS was 98.1% in stage IIA (n=109), 85.0% in stage IIB (n=83), 87.4% in stage IIIA (n=96), 83.5% in stage IIIB (n=91), and 62.5% in stage IIIC (n=81). After propensity score matching, RFS was similar between early and late AC groups (hazard ratio [HR],1.04; 95% confidence interval [CI], 0.62?1.74; P=0.889). Pathologic stage and histological type were independent prognostic factors of RFS (HR, 2.05; 95% CI, 1.06?3.96; P=0.033 and HR, 2.61; 95% CI, 1.42?4.80; P=0.002, respectively). Conclusions: Early initiation of AC within 4 weeks does not affect survival rates in stage II/III gastric cancer.

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