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Article

Prognostic implications of thymidylate synthase gene polymorphisms in patients with advanced small bowel adenocarcinoma treated with first-line fluoropyrimidine-based chemotherapy

  • Authors:
    • Ho-Young Yhim
    • Sang-Hee Cho
    • Sam Yong Kim
    • In Sung Cho
    • Kyu Taek Lee
    • Won Sup Lee
    • Soon Il Lee
    • Moo Rim Park
    • Sang-Gon Park
    • Hye-Suk Han
    • Yoon Seok Choi
    • Ik-Joo Chung
    • Hyun-Jeong Shim
    • Na-Ri Lee
    • Eun-Kee Song
    • Hee Sun Kim
    • Chang-Yeol Yim
  • View Affiliations / Copyright

    Affiliations: Department of Internal Medicine, Chonbuk National University Medical School, Jeonju, Republic of Korea, Department of Internal Medicine, Chonnam National University Medical School, Jeollanam-do, Republic of Korea, Department of Internal Medicine, Chungnam National University College of Medicine, Daejeon, Republic of Korea, Department of Internal Medicine, Eulji University Hospital, Daejeon, Republic of Korea, Department of Internal Medicine, Soonchunhyang University Cheonan Hospital, Cheonan, Republic of Korea, Department of Internal Medicine, Gyeongsang National University School of Medicine, Jinju, Republic of Korea, Department of Medicine, Dankook University Hospital, Cheonan, Republic of Korea, Department of Internal Medicine, Wonkwang University School of Medicine, Iksan, Republic of Korea, Department of Internal Medicine, Chosun University Hospital, Gwangju, Republic of Korea, Department of Internal Medicine, Chungbuk National University College of Medicine, Cheongju, Republic of Korea, Department of Nursing, Wonkwang University School of Medicine, Iksan, Republic of Korea
  • Pages: 155-164
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    Published online on: May 6, 2015
       https://doi.org/10.3892/or.2015.3954
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Abstract

Thymidylate synthase (TS) gene polymorphisms such as tandem repeat (TR) polymorphisms and single-nucleotide polymorphisms (SNPs) affect transcriptional efficiency of the TS gene and may be prognostic markers for fluoropyrimidine-based therapy in various gastrointestinal cancers. However, data for TS polymorphisms on clinical outcomes in advanced small bowel adenocarcinoma (SBA) are limited. We retrospectively enrolled 58 locally advanced/metastatic SBA patients treated with first-line fluoropyrimidine-based chemotherapy and analyzed the relationship between TS genotypes and clinical outcomes in 30 patients who were available for tumor tissue. Based on TR polymorphisms and a G>C SNP in the promoter region of the TS gene, 74% of patients had high TS expression genotypes (2R/3RG, 3RG/3RC, 3RG/3RG); the remainder had low TS expression genotypes (2R/2R, 2R/3RC, 3RC/3RC). After a median follow-up of 48.8 months, median progression-free survival (PFS) and overall survival (OS) in all patients were 6.0 and 11.3 months, respectively. However, patients with low TS expression genotypes had better median PFS (12.8 vs. 4.3 months, P=0.027) and OS (28.8 vs. 8.9 months, P=0.025) than those with high TS expression genotypes. In multivariate analysis, poor Eastern Cooperative Oncology Group performance status [hazard ratio (HR), 2.85; 95% CI, 1.02-7.93] and high TS expression genotypes (HR, 3.49; 95% CI, 1.13-10.78) were independent prognostic factors for worse OS. Therefore, TS genotypes, based on a G>C SNP in the TR sequence of the TS gene, may be a useful biomarker for predicting outcomes for fluoropyrimidine-based chemotherapy in patients with locally advanced/metastatic SBA.
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Copy and paste a formatted citation
Spandidos Publications style
Yhim H, Cho S, Kim SY, Cho IS, Lee KT, Lee WS, Lee SI, Park MR, Park S, Han H, Han H, et al: Prognostic implications of thymidylate synthase gene polymorphisms in patients with advanced small bowel adenocarcinoma treated with first-line fluoropyrimidine-based chemotherapy. Oncol Rep 34: 155-164, 2015.
APA
Yhim, H., Cho, S., Kim, S.Y., Cho, I.S., Lee, K.T., Lee, W.S. ... Yim, C. (2015). Prognostic implications of thymidylate synthase gene polymorphisms in patients with advanced small bowel adenocarcinoma treated with first-line fluoropyrimidine-based chemotherapy. Oncology Reports, 34, 155-164. https://doi.org/10.3892/or.2015.3954
MLA
Yhim, H., Cho, S., Kim, S. Y., Cho, I. S., Lee, K. T., Lee, W. S., Lee, S. I., Park, M. R., Park, S., Han, H., Choi, Y. S., Chung, I., Shim, H., Lee, N., Song, E., Kim, H. S., Yim, C."Prognostic implications of thymidylate synthase gene polymorphisms in patients with advanced small bowel adenocarcinoma treated with first-line fluoropyrimidine-based chemotherapy". Oncology Reports 34.1 (2015): 155-164.
Chicago
Yhim, H., Cho, S., Kim, S. Y., Cho, I. S., Lee, K. T., Lee, W. S., Lee, S. I., Park, M. R., Park, S., Han, H., Choi, Y. S., Chung, I., Shim, H., Lee, N., Song, E., Kim, H. S., Yim, C."Prognostic implications of thymidylate synthase gene polymorphisms in patients with advanced small bowel adenocarcinoma treated with first-line fluoropyrimidine-based chemotherapy". Oncology Reports 34, no. 1 (2015): 155-164. https://doi.org/10.3892/or.2015.3954
Copy and paste a formatted citation
x
Spandidos Publications style
Yhim H, Cho S, Kim SY, Cho IS, Lee KT, Lee WS, Lee SI, Park MR, Park S, Han H, Han H, et al: Prognostic implications of thymidylate synthase gene polymorphisms in patients with advanced small bowel adenocarcinoma treated with first-line fluoropyrimidine-based chemotherapy. Oncol Rep 34: 155-164, 2015.
APA
Yhim, H., Cho, S., Kim, S.Y., Cho, I.S., Lee, K.T., Lee, W.S. ... Yim, C. (2015). Prognostic implications of thymidylate synthase gene polymorphisms in patients with advanced small bowel adenocarcinoma treated with first-line fluoropyrimidine-based chemotherapy. Oncology Reports, 34, 155-164. https://doi.org/10.3892/or.2015.3954
MLA
Yhim, H., Cho, S., Kim, S. Y., Cho, I. S., Lee, K. T., Lee, W. S., Lee, S. I., Park, M. R., Park, S., Han, H., Choi, Y. S., Chung, I., Shim, H., Lee, N., Song, E., Kim, H. S., Yim, C."Prognostic implications of thymidylate synthase gene polymorphisms in patients with advanced small bowel adenocarcinoma treated with first-line fluoropyrimidine-based chemotherapy". Oncology Reports 34.1 (2015): 155-164.
Chicago
Yhim, H., Cho, S., Kim, S. Y., Cho, I. S., Lee, K. T., Lee, W. S., Lee, S. I., Park, M. R., Park, S., Han, H., Choi, Y. S., Chung, I., Shim, H., Lee, N., Song, E., Kim, H. S., Yim, C."Prognostic implications of thymidylate synthase gene polymorphisms in patients with advanced small bowel adenocarcinoma treated with first-line fluoropyrimidine-based chemotherapy". Oncology Reports 34, no. 1 (2015): 155-164. https://doi.org/10.3892/or.2015.3954
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