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April 19, 2026Cancer Research0 citations

Historical Redlining And DNA Methylation Changes In Prostate Tumors

Abstract LB376: Historical redlining and DNA methylation in prostate tumors

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Why the study?

Is residence in a historically redlined neighborhood associated with prostate tumor DNA methylation alterations in African American men with prostate cancer?

Population

92 African American men with prostate cancer who received radical prostatectomy at the University of…

Comparison

Residence in a historically redlined neighborhood vs Residence in a non-redlined neighborhood

Design

Cross-sectional

Key result

Residence in a historically redlined neighborhood was associated with significant prostate tumor DNA methylation differences at 12 CpG sites in African American men (FDR-adjusted p<0.05).

Authors

JBJoseph BoyleCCCamryn CohenDBDerrick Butts

Discussion

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Overview

May warrant residential history in PC risk assessment for AA men; extends ND research by implicating epigenetic mediators of racial disparities.

Key Points

  • To investigate the association between historical redlining and DNA methylation alterations in prostate tumors among African American men.
  • Cross-sectional study of prostate tumor DNA methylation data from African American men with prostate cancer.
  • Determined historical redlining status using 1930s redlining maps and patient address.
  • Measured DNA methylation using Illumina's EPIC v2 array and identified differentially methylated regions with bumphunter R package.
  • Applied linear regression to estimate associations, adjusting for age and year of surgery.
  • Included 92 African American men with a median age of 60 years at surgery.
  • Residence in a historically redlined neighborhood was linked with significant DNA methylation changes at 12 CpG sites.
  • 10 out of 12 CpG sites exhibited hypomethylation, particularly notable at the ZDHHC19 gene (mean DNAm: 0.76 redlined vs. 0.92 non-redlined).
  • One significant differentially methylated region involving hypomethylation of TNXB, associated with tumor progression, was identified.

Study Design

Type

Cross-Sectional (n=92)

Multicenter

No

Structured PICO

Is residence in a historically redlined neighborhood associated with prostate tumor DNA methylation alterations in African American men with prostate cancer?

P
Population
92 African American men with prostate cancer who received radical prostatectomy at the University of Maryland Medical Center between 1992-2021, median age 60.
I
Intervention
Residence in a historically redlined neighborhood (based on 1930s Home Owners' Loan Corporation map of the Baltimore metropolitan area)
C
Comparator
Residence in a non-redlined neighborhood
O
Outcome
Prostate tumor DNA methylation (DNAm) alterations at 683,765 CpG sitessurrogate

Residence in historically redlined neighborhoods is associated with specific epigenetic alterations in prostate tumors among African American men, suggesting a biological mechanism linking structural racism to cancer disparities.

Main Result

p-value: p=<0.05

Limitations

  • Additional research is needed to replicate these findings

Cite This Study

Boyle et al. (2026) conducted a cross-sectional in Prostate cancer (n=92). Residence in a historically redlined neighborhood vs. Residence in a non-redlined neighborhood was evaluated on Prostate tumor DNA methylation (DNAm) levels (p=<0.05). Residence in a historically redlined neighborhood was associated with significant prostate tumor DNA methylation differences at 12 CpG sites in African American men (FDR-adjusted p<0.05).

synapsesocial.com/papers/69e473de010ef96374d8f937https://doi.org/10.1158/1538-7445.am2026-lb376
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