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DOI：10.1097/SLA.0000000000006283.png)
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Abstract
En 中文
Objective:To determine the association between objective (geospatial) and subjective (perceived) measures of neighborhood disadvantage (ND) and aggressive breast cancer tumor biology, defined using validated social adversity-associated transcription factor (TF) activity and clinical outcomes.Background:ND is associated with shorter breast cancer recurrence-free survival (RFS), independent of individual, tumor, and treatment characteristics, suggesting potential unaccounted biological mechanisms by which ND influences RFS.Methods:We quantified TF-binding motif prevalence within promoters of differentially expressed genes for 147 tissue samples prospectively collected on the protocol. Covariate-adjusted multivariable regression analyzed objective and subjective ND scores with 5 validated TFs of social adversity and aggressive biology-pro-inflammatory activity [nuclear factor-kappa B (NF-kB), activator protein 1 (AP-1)], sympathetic nervous system (SNS) activity [cyclic 3 '-5 ' adenosine monophosphate response element-binding protein (CREB)], and protective cellular responses [interferon-regulatory factor (IRF) and signal transducer and activator of transcription (STAT)]. To clinically validate these TFs as prognostic biomarkers of aggressive biology, logistic regression and multivariable Cox proportional-hazards models analyzed their association with Oncotype DX scores and RFS, respectively.Results:Increasing objective ND was associated with aggressive tumor biology (up-regulated NF-kB, activator protein 1, down-regulated IRF, and signal transducer and activator of transcription) and SNS activation (up-regulated CREB). Increasing subjective ND (eg, threat to safety) was associated with up-regulated NF-kB and CREB and down-regulated IRF. These TF patterns were associated with high-risk Oncotype DX scores and shorter RFS.Conclusions:In the largest human social genomics study, objective and subjective ND were significantly associated with TFs of aggressive biology and SNS activation. These TFs also correlated with worse clinical outcomes, implicating SNS activation as one potential mechanism behind ND survival disparities. These findings remain to be validated in a national cohort.
Keywords:
breast cancer
health disparities
neighborhood disadvantage
social genomics
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