TY - JOUR
T1 - ABCB1 (MDR1) polymorphisms and ovarian cancer progression and survival
T2 - A comprehensive analysis from the Ovarian Cancer Association Consortium and The Cancer Genome Atlas
AU - Johnatty, Sharon E
AU - Beesley, Jonathan
AU - Gao, Bo
AU - Chen, Xiaoqing
AU - Lu, Yi
AU - Law, Matthew H
AU - Henderson, Michelle J
AU - Russell, Amanda J
AU - Hedditch, Ellen L
AU - Emmanuel, Catherine
AU - Fereday, Sian
AU - Webb, Penelope M
AU - Goode, Ellen L
AU - Vierkant, Robert A
AU - Fridley, Brooke L
AU - Cunningham, Julie M
AU - Fasching, Peter A
AU - Beckmann, Matthias W
AU - Ekici, Arif B
AU - Hogdall, Estrid
AU - Kjaer, Susanne K
AU - Jensen, Allan
AU - Hogdall, Claus
AU - Brown, Robert James (Jim)
AU - Paul, Jim
AU - Lambrechts, Sandrina
AU - Despierre, Evelyn
AU - Vergote, Ignace
AU - Lester, Jenny
AU - Karlan, Beth Y
AU - Heitz, Florian
AU - du Bois, Andreas
AU - Harter, Philipp
AU - Schwaab, Ira
AU - Bean, Yukie
AU - Pejovic, Tanja
AU - Levine, Douglas A
AU - Goodman, Marc T
AU - Camey, Michael E
AU - Thompson, Pamela J
AU - Lurie, Galina
AU - Shildkraut, Joellen
AU - Berchuck, Andrew
AU - Terry, Kathryn L
AU - Cramer, Daniel W
AU - Norris, Murray D
AU - Haber, Michelle
AU - MacGregor, Stuart
AU - deFazio, Anna
AU - Chenevix-Trench, Georgia
AU - Group, Australian Ovarian Cancer Study
PY - 2013/10
Y1 - 2013/10
N2 - 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 associationwith 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 rs1045642were the best candidates in optimally debulked patients. However, we observed no significant association between any SNP and either progression-free survivaloroverall survival inanalysis ofdata from14 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.
AB - 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 associationwith 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 rs1045642were the best candidates in optimally debulked patients. However, we observed no significant association between any SNP and either progression-free survivaloroverall survival inanalysis ofdata from14 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.
U2 - 10.1016/j.ygyno.2013.07.107
DO - 10.1016/j.ygyno.2013.07.107
M3 - Journal article
C2 - 23917080
SN - 0090-8258
VL - 131
SP - 8
EP - 14
JO - Gynecologic Oncology
JF - Gynecologic Oncology
IS - 1
ER -