Abstract
INTRODUCTION: Relationships of parity with breast cancer risk are complex. Parity is associated with decreased risk of postmenopausal hormone receptor-positive breast tumors, but may increase risk for basal-like breast cancers and early-onset tumors. Characterizing parity-related gene expression patterns in normal breast and breast tumor tissues may improve understanding of the biological mechanisms underlying this complex pattern of risk.
METHODS: We developed a parity signature by analyzing microRNA microarray data from 130 reduction mammoplasty (RM) patients (54 nulliparous and 76 parous). This parity signature, together with published parity signatures, was evaluated in gene expression data from 150 paired tumors and adjacent benign breast tissues from the Polish Breast Cancer Study, both overall and by tumor estrogen receptor (ER) status.
RESULTS: We identified 251 genes significantly upregulated by parity status in RM patients (parous versus nulliparous; false discovery rate = 0.008), including genes in immune, inflammation and wound response pathways. This parity signature was significantly enriched in normal and tumor tissues of parous breast cancer patients, specifically in ER-positive tumors.
CONCLUSIONS: Our data corroborate epidemiologic data, suggesting that the etiology and pathogenesis of breast cancers vary by ER status, which may have implications for developing prevention strategies for these tumors.
| Original language | English (US) |
|---|---|
| Pages (from-to) | R74 |
| Journal | Breast cancer research : BCR |
| Volume | 16 |
| Issue number | 4 |
| DOIs | |
| State | Published - 2014 |
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ASJC Scopus subject areas
- Medicine(all)
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Parity-related molecular signatures and breast cancer subtypes by estrogen receptor status. / Rotunno, Melissa; Sun, Xuezheng; Figueroa, Jonine; Sherman, Mark E.; Garcia-Closas, Montserrat; Meltzer, Paul; Williams, Tyisha; Schneider, Sallie S.; Jerry, D. J.; Yang, Xiaohong R.; Troester, Melissa A.
In: Breast cancer research : BCR, Vol. 16, No. 4, 2014, p. R74.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Parity-related molecular signatures and breast cancer subtypes by estrogen receptor status
AU - Rotunno, Melissa
AU - Sun, Xuezheng
AU - Figueroa, Jonine
AU - Sherman, Mark E.
AU - Garcia-Closas, Montserrat
AU - Meltzer, Paul
AU - Williams, Tyisha
AU - Schneider, Sallie S.
AU - Jerry, D. J.
AU - Yang, Xiaohong R.
AU - Troester, Melissa A.
PY - 2014
Y1 - 2014
N2 - INTRODUCTION: Relationships of parity with breast cancer risk are complex. Parity is associated with decreased risk of postmenopausal hormone receptor-positive breast tumors, but may increase risk for basal-like breast cancers and early-onset tumors. Characterizing parity-related gene expression patterns in normal breast and breast tumor tissues may improve understanding of the biological mechanisms underlying this complex pattern of risk.METHODS: We developed a parity signature by analyzing microRNA microarray data from 130 reduction mammoplasty (RM) patients (54 nulliparous and 76 parous). This parity signature, together with published parity signatures, was evaluated in gene expression data from 150 paired tumors and adjacent benign breast tissues from the Polish Breast Cancer Study, both overall and by tumor estrogen receptor (ER) status.RESULTS: We identified 251 genes significantly upregulated by parity status in RM patients (parous versus nulliparous; false discovery rate = 0.008), including genes in immune, inflammation and wound response pathways. This parity signature was significantly enriched in normal and tumor tissues of parous breast cancer patients, specifically in ER-positive tumors.CONCLUSIONS: Our data corroborate epidemiologic data, suggesting that the etiology and pathogenesis of breast cancers vary by ER status, which may have implications for developing prevention strategies for these tumors.
AB - INTRODUCTION: Relationships of parity with breast cancer risk are complex. Parity is associated with decreased risk of postmenopausal hormone receptor-positive breast tumors, but may increase risk for basal-like breast cancers and early-onset tumors. Characterizing parity-related gene expression patterns in normal breast and breast tumor tissues may improve understanding of the biological mechanisms underlying this complex pattern of risk.METHODS: We developed a parity signature by analyzing microRNA microarray data from 130 reduction mammoplasty (RM) patients (54 nulliparous and 76 parous). This parity signature, together with published parity signatures, was evaluated in gene expression data from 150 paired tumors and adjacent benign breast tissues from the Polish Breast Cancer Study, both overall and by tumor estrogen receptor (ER) status.RESULTS: We identified 251 genes significantly upregulated by parity status in RM patients (parous versus nulliparous; false discovery rate = 0.008), including genes in immune, inflammation and wound response pathways. This parity signature was significantly enriched in normal and tumor tissues of parous breast cancer patients, specifically in ER-positive tumors.CONCLUSIONS: Our data corroborate epidemiologic data, suggesting that the etiology and pathogenesis of breast cancers vary by ER status, which may have implications for developing prevention strategies for these tumors.
UR - http://www.scopus.com/inward/record.url?scp=84964314053&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84964314053&partnerID=8YFLogxK
U2 - 10.1186/bcr3689
DO - 10.1186/bcr3689
M3 - Article
C2 - 25005139
AN - SCOPUS:84903807525
VL - 16
SP - R74
JO - Breast Cancer Research
JF - Breast Cancer Research
SN - 1465-5411
IS - 4
ER -