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The prognostic values of CYP2B6 genetic polymorphisms and metastatic sites for advanced breast cancer patients treated with docetaxel and thiotepa.

Publication ,  Journal Article
Song, Q; Zhou, X; Yu, J; Dong, N; Wang, X; Yang, H; Ren, J; Lyerly, HK
Published in: Sci Rep
November 25, 2015

This study investigated interactive effects of CYP2B6 genotypes and liver metastasis on the prognosis of metastatic breast cancer patients who received combined chemotherapy of docetaxel and thiotepa. Totally 153 patients were retrospectively genotyped rs8192719 (c.1294 + 53C > T) and rs2279343 (c.785A > G). Kaplan-Meier method and Cox Proportional Hazard Regression model were used to estimate the survival. Patients with liver metastasis had worsen prognosis, conferring a 2.26-fold high risk of progression and 1.93-fold high risk of death (p < 0.05). Both CT/TT genotype of rs8192719 (c.1294 +  3C > T) and AG genotype of rs2279343 (c.785A > G) prolonged survival (p < 0.05). Furthermore, among liver metastatic patients, AG genotype of rs2279343 (c.785A > G) was associated with a 47% reduced risk of death and a 6-month-longer overall survival (p < 0.05). Among non-liver metastatic patients, hazard ratios of CT/TT genotype of rs8192719 (c.1294 + 53C > T) were 0.45 for progression and 0.40 for death; and the corresponding survival was improved by 6 months and 16 months, respectively (p < 0.05). Genotypes of CYP2B6 had an interaction with clinical efficacy of docetaxel and thiotepa on metastatic breast cancer patients; and metastatic sites also affected clinical responses. Further therapies should take into account of chemotherapy regimen, genotypes of metabolizing enzymes and metastatic sites for the particular subpopulation.

Duke Scholars

Published In

Sci Rep

DOI

EISSN

2045-2322

Publication Date

November 25, 2015

Volume

5

Start / End Page

16775

Location

England

Related Subject Headings

  • Thiotepa
  • Taxoids
  • Prospective Studies
  • Prognosis
  • Polymorphism, Single Nucleotide
  • Neoplasm Staging
  • Middle Aged
  • Humans
  • Genotype
  • Female
 

Citation

APA
Chicago
ICMJE
MLA
NLM
Song, Q., Zhou, X., Yu, J., Dong, N., Wang, X., Yang, H., … Lyerly, H. K. (2015). The prognostic values of CYP2B6 genetic polymorphisms and metastatic sites for advanced breast cancer patients treated with docetaxel and thiotepa. Sci Rep, 5, 16775. https://doi.org/10.1038/srep16775
Song, Qingkun, Xinna Zhou, Jing Yu, Ningning Dong, Xiaoli Wang, Huabing Yang, Jun Ren, and H Kim Lyerly. “The prognostic values of CYP2B6 genetic polymorphisms and metastatic sites for advanced breast cancer patients treated with docetaxel and thiotepa.Sci Rep 5 (November 25, 2015): 16775. https://doi.org/10.1038/srep16775.

Published In

Sci Rep

DOI

EISSN

2045-2322

Publication Date

November 25, 2015

Volume

5

Start / End Page

16775

Location

England

Related Subject Headings

  • Thiotepa
  • Taxoids
  • Prospective Studies
  • Prognosis
  • Polymorphism, Single Nucleotide
  • Neoplasm Staging
  • Middle Aged
  • Humans
  • Genotype
  • Female