Genome-wide association study to identify susceptibility loci that modify radiation-related risk for breast cancer after childhood cancer Journal Article


Authors: Morton, L. M.; Sampson, J. N.; Armstrong, G. T.; Chen, T. H.; Hudson, M. M.; Karlins, E.; Dagnall, C. L.; Li, S. A.; Wilson, C. L.; Srivastava, D. K.; Liu, W.; Kang, G.; Oeffinger, K. C.; Henderson, T. O.; Moskowitz, C. S.; Gibson, T. M.; Merino, D. M.; Bhatia, S.; Chanock, S. J.; Tucker, M. A.; Robison, L. L.
Article Title: Genome-wide association study to identify susceptibility loci that modify radiation-related risk for breast cancer after childhood cancer
Abstract: Background: Childhood cancer survivors treated with chest-directed radiotherapy have substantially elevated risk for developing breast cancer. Although genetic susceptibility to breast cancer in the general population is well studied, large-scale evaluation of breast cancer susceptibility after chest-directed radiotherapy for childhood cancer is lacking. Methods: We conducted a genome-wide association study of breast cancer in female survivors of childhood cancer, pooling two cohorts with detailed treatment data and systematic, long-Term follow-up: The Childhood Cancer Survivor Study and St. Jude Lifetime Cohort. The study population comprised 207 survivors who developed breast cancer and 2774 who had not developed any subsequent neoplasm as of last follow-up. Genotyping and subsequent imputation yielded 16 958 466 highquality variants for analysis. We tested associations in the overall population and in subgroups stratified by receipt of lower than 10 and 10 or higher gray breast radiation exposure. We report P values and pooled per-Allele risk estimates from Cox proportional hazards regression models. All statistical tests were two-sided. Results: Among survivors who received 10 or higher gray breast radiation exposure, a locus on 1q41 was associated with subsequent breast cancer risk (rs4342822, nearest gene PROX1, risk allele frequency in control subjects [RAFcontrols] = 0.46, hazard ratio = 1.92, 95% confidence interval = 1.49 to 2.44, P = 7.09×10-9). Two rare variants also showed potentially promising associations (breast radiation -10 gray: rs74949440, 11q23, TAGLN, RAFcontrols = 0.02, P = 5.84×10-8; <10 gray:.
Journal Title: JNCI: Journal of the National Cancer Institute
Volume: 109
Issue: 11
ISSN: 0027-8874
Publisher: Oxford University Press  
Date Published: 2017-05-26
Start Page: djx058
Language: English
DOI: 10.1093/jnci/djx058
PROVIDER: scopus
PMCID: PMC6059172
PUBMED: 29059430
DOI/URL:
Notes: Article -- Export Date: 3 July 2017 -- Source: Scopus
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  1. Chaya S. Moskowitz
    280 Moskowitz
  2. Kevin Oeffinger
    297 Oeffinger