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Genetic research

Landmark Study Reveals Cancer Genomics Similarity in African American Women with Triple-Negative Breast Cancer

Strategic Insights

— 2 min read

A major study led by Roswell Park Comprehensive Cancer Center has discovered that cancer genomics in African American women with triple-negative breast cancer (TNBC) are similar to those in other populations, with no evidence of association with African ancestry. The largest-ever genomic study of TNBC in African American women, involving 462 patients, found that mutations in the TP53 gene were present in almost all African American TNBC patients, more prevalent than previously realized.

Key Takeaways:

  • The study, led by researchers at Roswell Park Comprehensive Cancer Center, involved 462 African American women with TNBC across the US.
  • The findings reveal that cancer genomics in African American women with TNBC are similar to those in other populations, with no evidence of association with African ancestry.
  • Mutations in the TP53 gene were present in almost all African American TNBC patients, more prevalent than previously realized.
  • The study identified two main pathways of disease development in this population, one related to genetic predisposition and faulty DNA damage repair, and the other related to aging and the effects of obesity.
  • The researchers also found that aging and obesity may play a role in the development of TNBC, in addition to genetic predisposition.
  • The study was made possible by pooling resources from several institutions, including the Women's Circle of Health Study, the Black Women's Health Study, and the Southern Community Cohort Study.
  • The research was funded by the National Institutes of Health, the Roswell Park Cancer Center Support Grant, the Breast Cancer Research Foundation, and the Karin Grunebaum Cancer Research Foundation.
  • The study's findings have significant implications for understanding the biology of TNBC in African American women and for developing targeted therapies.

Statistics:

  • 462 African American women with TNBC were included in the study.
  • The study detected mutations in the TP53 gene in almost all (99%) African American TNBC patients.
  • The prevalence of TP53 mutations in African American TNBC patients was significantly higher than previously reported.
  • The study found two main pathways of disease development in this population: genetic predisposition and faulty DNA damage repair (occurring in younger patients), and aging and obesity (occurring in older patients).
  • The study suggests that aging and obesity may play a role in the development of TNBC in African American women.

Sources:

  • Roswell Park Comprehensive Cancer Center. (Aug. 26). Original Press Release.
  • Nature Genetics. (Aug. 26). "Mutational Landscape of Triple-Negative Breast Cancer in African American Women."
  • Song Yao, MD, PhD, et al. "Mutational Landscape of Triple-Negative Breast Cancer in African American Women." Nature Genetics.

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