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

DSpace/Manakin Repository

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

Citable link to this page

 

 
Title: ABCB1 (MDR1) polymorphisms and ovarian cancer progression and survival: A comprehensive analysis from the Ovarian Cancer Association Consortium and The Cancer Genome Atlas
Author: Johnatty, Sharon E.; Beesley, Jonathan; Gao, Bo; Chen, Xiaoqing; Lu, Yi; Law, Matthew H.; Henderson, Michelle J.; Russell, Amanda J.; Hedditch, Ellen L.; Emmanuel, Catherine; Fereday, Sian; Webb, Penelope M.; Goode, Ellen L.; Vierkant, Robert A.; Fridley, Brooke L.; Cunningham, Julie M; Fasching, Peter A.; Beckmann, Matthias W.; Ekici, Arif B.; Hogdall, Estrid; Kjaer, Susanne K.; Jensen, Allan; Hogdall, Claus; Brown, Robert; Paul, Jim; Lambrechts, Sandrina; Despierre, Evelyn; Vergote, Ignace; Lester, Jenny; Karlan, Beth Y.; Heitz, Florian; du Bois, Andreas; Harter, Philipp; Schwaab, Ira; Bean, Yukie; Pejovic, Tanja; Levine, Douglas A.; Goodman, Marc T.; Camey, Michael E.; Thompson, Pamela J.; Lurie, Galina; Shildkraut, Joellen; Berchuck, Andrew; Terry, Kathryn Lynne; Cramer, Daniel William; Norris, Murray D.; Haber, Michelle; MacGregor, Stuart; deFazio, Anna; Chenevix-Trench, Georgia

Note: Order does not necessarily reflect citation order of authors.

Citation: Johnatty, Sharon E., Jonathan Beesley, Bo Gao, Xiaoqing Chen, Yi Lu, Matthew H. Law, Michelle J. Henderson, et al. 2013. “ABCB1 (MDR1) Polymorphisms and Ovarian Cancer Progression and Survival: A Comprehensive Analysis from the Ovarian Cancer Association Consortium and The Cancer Genome Atlas.” Gynecologic Oncology 131 (1) (October): 8–14. doi:10.1016/j.ygyno.2013.07.107.
Full Text & Related Files:
Abstract: 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 4,616 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=1,158) or any first-line chemotherapy regimen (n=2,867). 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.
Published Version: doi:10.1016/j.ygyno.2013.07.107
Other Sources: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3795832/
Terms of Use: This article is made available under the terms and conditions applicable to Other Posted Material, as set forth at http://nrs.harvard.edu/urn-3:HUL.InstRepos:dash.current.terms-of-use#LAA
Citable link to this page: http://nrs.harvard.edu/urn-3:HUL.InstRepos:27331761
Downloads of this work:

Show full Dublin Core record

This item appears in the following Collection(s)

 
 

Search DASH


Advanced Search
 
 

Submitters