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ABCB1 (MDR1) polymorphisms and ovarian cancer progression and survival: a comprehensive analysis from the Ovarian Cancer Association Consortium and The Cancer Genome Atlas.

Publication ,  Journal Article
Johnatty, SE; Beesley, J; Gao, B; Chen, X; Lu, Y; Law, MH; Henderson, MJ; Russell, AJ; Hedditch, EL; Emmanuel, C; Fereday, S; Webb, PM ...
Published in: Gynecol Oncol
October 2013

OBJECTIVE: ABCB1 encodes the multi-drug efflux pump P-glycoprotein (P-gp) and has been implicated in multi-drug resistance. We comprehensively evaluated this gene and flanking regions for an association with clinical outcome in epithelial ovarian cancer (EOC). METHODS: The best candidates from fine-mapping analysis of 21 ABCB1 SNPs tagging C1236T (rs1128503), G2677T/A (rs2032582), and C3435T (rs1045642) were analysed in 4616 European invasive EOC patients from thirteen Ovarian Cancer Association Consortium (OCAC) studies and The Cancer Genome Atlas (TCGA). Additionally we analysed 1,562 imputed SNPs around ABCB1 in patients receiving cytoreductive surgery and either 'standard' first-line paclitaxel-carboplatin chemotherapy (n=1158) or any first-line chemotherapy regimen (n=2867). We also evaluated ABCB1 expression in primary tumours from 143 EOC patients. RESULT: Fine-mapping revealed that rs1128503, rs2032582, and rs1045642 were the best candidates in optimally debulked patients. However, we observed no significant association between any SNP and either progression-free survival or overall survival in analysis of data from 14 studies. There was a marginal association between rs1128503 and overall survival in patients with nil residual disease (HR 0.88, 95% CI 0.77-1.01; p=0.07). In contrast, ABCB1 expression in the primary tumour may confer worse prognosis in patients with sub-optimally debulked tumours. CONCLUSION: Our study represents the largest analysis of ABCB1 SNPs and EOC progression and survival to date, but has not identified additional signals, or validated reported associations with progression-free survival for rs1128503, rs2032582, and rs1045642. However, we cannot rule out the possibility of a subtle effect of rs1128503, or other SNPs linked to it, on overall survival.

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Published In

Gynecol Oncol

DOI

EISSN

1095-6859

Publication Date

October 2013

Volume

131

Issue

1

Start / End Page

8 / 14

Location

United States

Related Subject Headings

  • Proportional Hazards Models
  • Polymorphism, Single Nucleotide
  • Pharmacogenetics
  • Paclitaxel
  • Ovarian Neoplasms
  • Oncology & Carcinogenesis
  • Neoplasms, Glandular and Epithelial
  • Kaplan-Meier Estimate
  • Humans
  • Female
 

Citation

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Johnatty, S. E., Beesley, J., Gao, B., Chen, X., Lu, Y., Law, M. H., … Chenevix-Trench, G. (2013). ABCB1 (MDR1) polymorphisms and ovarian cancer progression and survival: a comprehensive analysis from the Ovarian Cancer Association Consortium and The Cancer Genome Atlas. Gynecol Oncol, 131(1), 8–14. https://doi.org/10.1016/j.ygyno.2013.07.107
Johnatty, Sharon E., Jonathan Beesley, Bo Gao, Xiaoqing Chen, Yi Lu, Matthew H. Law, Michelle J. Henderson, et al. “ABCB1 (MDR1) polymorphisms and ovarian cancer progression and survival: a comprehensive analysis from the Ovarian Cancer Association Consortium and The Cancer Genome Atlas.Gynecol Oncol 131, no. 1 (October 2013): 8–14. https://doi.org/10.1016/j.ygyno.2013.07.107.
Johnatty, Sharon E., et al. “ABCB1 (MDR1) polymorphisms and ovarian cancer progression and survival: a comprehensive analysis from the Ovarian Cancer Association Consortium and The Cancer Genome Atlas.Gynecol Oncol, vol. 131, no. 1, Oct. 2013, pp. 8–14. Pubmed, doi:10.1016/j.ygyno.2013.07.107.
Johnatty SE, Beesley J, Gao B, Chen X, Lu Y, Law MH, Henderson MJ, Russell AJ, Hedditch EL, Emmanuel C, Fereday S, Webb PM, Australian Ovarian Cancer Study Group, Goode EL, Vierkant RA, Fridley BL, Cunningham JM, Fasching PA, Beckmann MW, Ekici AB, Hogdall E, Kjaer SK, Jensen A, Hogdall C, Brown R, Paul J, Lambrechts S, Despierre E, Vergote I, Lester J, Karlan BY, Heitz F, du Bois A, Harter P, Schwaab I, Bean Y, Pejovic T, Levine DA, Goodman MT, Camey ME, Thompson PJ, Lurie G, Shildkraut J, Berchuck A, Terry KL, Cramer DW, Norris MD, Haber M, MacGregor S, deFazio A, Chenevix-Trench G. ABCB1 (MDR1) polymorphisms and ovarian cancer progression and survival: a comprehensive analysis from the Ovarian Cancer Association Consortium and The Cancer Genome Atlas. Gynecol Oncol. 2013 Oct;131(1):8–14.
Journal cover image

Published In

Gynecol Oncol

DOI

EISSN

1095-6859

Publication Date

October 2013

Volume

131

Issue

1

Start / End Page

8 / 14

Location

United States

Related Subject Headings

  • Proportional Hazards Models
  • Polymorphism, Single Nucleotide
  • Pharmacogenetics
  • Paclitaxel
  • Ovarian Neoplasms
  • Oncology & Carcinogenesis
  • Neoplasms, Glandular and Epithelial
  • Kaplan-Meier Estimate
  • Humans
  • Female