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HER2-low prevalence among Hispanic/Latino women with breast cancer: A systematic review and meta-analysis

Author

Listed:
  • Daniel Felipe Mendivelso-González
  • Daniel Clavijo Cabezas
  • Luisa Montoya
  • Merideidy Plazas Vargas
  • Patricia López-Correa
  • Eugenia Colón
  • Rafael Parra-Medina

Abstract

Purpose: HER2-low has garnered significant attention for the treatment of HER2-negative breast cancer. We aimed to determine the prevalence of HER2-low expression in Hispanic/Latino women with breast cancer (BC). Methods: We searched in Embase, LILACS, and Medline databases for articles reporting the expression of HER2 immunohistochemistry with scores reported as 0, 1+, 2+, or 3+, with equivocal cases (2+) confirmed through in situ hybridization (ISH). Results: A total of 12 articles were finally included, comprising 73,467 individuals. The prevalence of HER2-zero, HER2-low and HER2 positive cases among all BC (0, 1+, 2+/ISH-, 2+/ISH+ and 3+), was 45.0%, 32.0%, and 23.0%, respectively. The prevalence of HER2-zero and HER2-low expression among negative cases (0, 1+ and 2+/ISH-), was 53.0% and 47.0%, respectively. Conclusion: There is an important percentage of Hispanic/Latino individuals who would benefit from HER2-targeted therapies, even in HER2 negative cases. Additional research on the prevalence of HER2-low tumors across a wider range of Latin American countries is required to better understand the molecular epidemiology of this biomarker within the Hispanic/Latino population.

Suggested Citation

  • Daniel Felipe Mendivelso-González & Daniel Clavijo Cabezas & Luisa Montoya & Merideidy Plazas Vargas & Patricia López-Correa & Eugenia Colón & Rafael Parra-Medina, 2024. "HER2-low prevalence among Hispanic/Latino women with breast cancer: A systematic review and meta-analysis," PLOS ONE, Public Library of Science, vol. 19(12), pages 1-16, December.
    • Handle: RePEc:plo:pone00:0315287
    DOI: 10.1371/journal.pone.0315287
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