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Evidence for association of SNPs in ABCB1 and CBR3, but not RAC2, NCF4, SLC28A3 or TOP2B, with chronic cardiotoxicity in a cohort of breast cancer patients treated with anthracyclines.


ABSTRACT: Validation of associations for SNPs in RAC2, NCF4 and SLC28A3, identification of a novel association with a TOP2B SNP and screening 23 SNPs putatively relevant to anthracycline-induced cardiotoxicity.A total of 166 breast cancer patients treated with doxorubicin underwent echocardiogram, including 19 cases with systolic dysfunction (ejection fraction <55%) and 147 controls. Four high priority SNPs were tested in the primary analysis, with appropriate statistical correction, and 23 additional SNPs were screened in an uncorrected secondary analysis.Previously reported associations for RAC2, NCF4 and SLC28A3 could not be validated and a novel association with TOP2B was not discovered in this cohort (all p > 0.05), likely due to inadequate power. Two SNPs were identified in the uncorrected secondary analysis including a protective SNP in ABCB1 (3435C>T, p = 0.049) and a risk allele in CBR3 (V244M, p = 0.012).The associations reported in prior publications and those discovered in this secondary analysis require further replication in independent cohorts.

SUBMITTER: Hertz DL 

PROVIDER: S-EPMC5558515 | biostudies-literature | 2016 Feb

REPOSITORIES: biostudies-literature

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Evidence for association of SNPs in ABCB1 and CBR3, but not RAC2, NCF4, SLC28A3 or TOP2B, with chronic cardiotoxicity in a cohort of breast cancer patients treated with anthracyclines.

Hertz Daniel L DL   Caram Megan V MV   Kidwell Kelley M KM   Thibert Jacklyn N JN   Gersch Christina C   Seewald Nicholas J NJ   Smerage Jeffrey J   Rubenfire Melvyn M   Henry N Lynn NL   Cooney Kathleen A KA   Leja Monika M   Griggs Jennifer J JJ   Rae James M JM  

Pharmacogenomics 20160122 3


<h4>Aims</h4>Validation of associations for SNPs in RAC2, NCF4 and SLC28A3, identification of a novel association with a TOP2B SNP and screening 23 SNPs putatively relevant to anthracycline-induced cardiotoxicity.<h4>Patients & methods</h4>A total of 166 breast cancer patients treated with doxorubicin underwent echocardiogram, including 19 cases with systolic dysfunction (ejection fraction <55%) and 147 controls. Four high priority SNPs were tested in the primary analysis, with appropriate stati  ...[more]

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