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Thromboembolic events in patients who received adjuvant chemotherapy for gastric cancer: a single-center retrospective study

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Kim, Tae-Hwan; Choi, Jin-Hyuk; Jeon, Sang Min; Choi, Yong Won; Kwon, Minsuk; Lee, Hyun Woo; Kang, Seok Yun; Ahn, Mi Sun; Son, Sang-Yong; Hur, Hoon; Han, Sang-Uk; Sheen, Seung-Soo

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GASTRIC CANCER, Vol.26 No.6, pp.1012-1019
Background Thromboembolic events (TEEs) are significant adverse events that can cause serious morbidities and mortality in cancer patients receiving chemotherapy. Patients with gastric cancer (GC) treated with palliative chemotherapy have been reported to experience a TEE incidence of 5-27%. However, very few reports have addressed TEEs in adjuvant chemotherapy (AC) for GC.Methods This study retrospectively analyzed 611 GC patients (stage II: 309, III: 302) who started AC with capecitabine/oxaliplatin (167 patients) or S-1 (444 patients) after undergoing curative resection between January 2013 and June 2020 at a single center. The incidence of TEEs during AC or within 1 year after AC completion was investigated, while analyzing the factors that influenced the TEEs' occurrence.Results TEEs were confirmed in 20 patients (3.3%), and TEEs occurred in almost all patients in the S-1 group (19 patients). The most common TEE types were cerebral infarction and pulmonary thromboembolism (five patients each). Although old age (= 70 years, p < 0.0001), S-1 treatment (p = 0.021), and hypertension (p = 0.017) were identified as significant risk factors for TEEs in univariate analysis, only old age showed a statistically significant correlation with TEEs' occurrence in multivariate analysis (odds ratio: 3.07; 95% confidence interval 1.11-8.48; p = 0.031).Conclusions TEEs occurred in fewer patients with GC who had been treated with AC than patients who had received palliative chemotherapy in previous reports. However, elderly GC patients who are undergoing AC require more careful surveillance for possible TEEs, considering relatively higher incidence of them.
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  • College of Pharmacy
  • Department of Pharmacy
Research Area Cancer Origin, Metabolism, Toxicology


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