Abstract
Single nucleotide polymorphisms (SNPs) in pathways influencing lymph node (LN) metastasis and estrogen receptor (ER) status in breast cancer may partially explain inter-patient variability in prognosis. We examined 154 SNPs in 12 metastasis-related genes for associations with breast cancer risk, stratified by LN and ER status, in European-American (EA) and African-American (AA) women. Two-thousand six hundred and seventy-one women enrolled in the Women's Circle of Health Study were genotyped. Pathway analyses were conducted using the adaptive rank truncated product (ARTP) method, with pARTP ≤ 0.10 as significant. Multi-allelic risk scores were created for the ARTP-significant gene(s). Single-SNP and risk score associations were modeled using logistic regression, with false discovery rate (FDR) P-value adjustment. Although single-SNP associations were not significant at pFDR < 0.05, several genes were significant in the ARTP analyses. In AA women, significant ARTP gene-level associations included CDH1 with LN+ (pARTP = 0.10; multi-allelic OR = 1.13, 95%CI 1.07–1.19, pFDR = 0.0003) and SIPA1 with ER− breast cancer (pARTP = 0.10; multi-allelic OR = 1.16, 95%CI 1.02–1.31, pFDR = 0.03). In EA women, MTA2 was associated with overall breast cancer risk (pARTP = 0.004), regardless of ER status, and with LN− disease (pARTP = 0.01). Also significant were SATB1 in ER− (pARTP = 0.03; multi-allelic OR = 1.12, 95%CI 1.05–1.20, pFDR = 0.003) and KISS1 in LN− (pARTP = 0.10; multi-allelic OR = 1.18, 95%CI 1.08–1.29, pFDR = 0.002) analyses. Among LN+ cases, significant ARTP associations were observed for SNAI1, CD82, NME1, and CTNNB1 (multi-allelic OR = 1.09, 95%CI 1.04–1.14, pFDR = 0.001). Our findings suggest that variants in several metastasis genes may affect breast cancer risk by LN or ER status, although verification in larger studies is required.
| Original language | English |
|---|---|
| Pages (from-to) | 1000-1009 |
| Number of pages | 10 |
| Journal | Molecular Carcinogenesis |
| Volume | 56 |
| Issue number | 3 |
| DOIs | |
| State | Published - Mar 1 2017 |
Keywords
- African-American
- breast neoplasms
- estrogen receptor
- lymph nodes
- single nucleotide polymorphism
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