HIF-1α and CD44+CD24-/low Breast Cancer: A Study on Prognosis
Author Information
Author(s): João Paulo Oliveira-Costa, Juliana S Zanetti, Giórgia G Silveira, Danilo F Soave, Lucinei R Oliveira, Verônica A Zorgetto, Fernando A Soares, Sérgio Zucoloto, Alfredo Ribeiro-Silva
Primary Institution: Ribeirao Preto Medical School, University of Sao Paulo
Hypothesis
Does hypoxia influence the expression of CD44+CD24-/low immunophenotype in breast ductal carcinomas?
Conclusion
The study found that hypoxia, indicated by HIF-1α expression, is associated with worse prognosis in CD44+CD24-/low positive breast tumors.
Supporting Evidence
- CD44+CD24-/low expression showed association with death due to breast cancer (p = 0.035).
- Breast tumors expressing CD44+CD24-/low immunophenotype showed relationship with HIF-1α (p = 0.039).
- CD44+CD24-/low tumors were negatively associated with HER-2 expression (p = 0.013).
Takeaway
This study shows that certain breast cancer cells, which are more aggressive and linked to worse outcomes, are influenced by low oxygen levels in tumors.
Methodology
Immunohistochemical analysis of CD44+CD24-/low expression and its relationship with hypoxia markers and clinical outcomes were evaluated in 253 samples of breast ductal carcinomas.
Potential Biases
Potential bias in patient selection and retrospective data collection.
Limitations
The study did not include patients who received prior treatment, which may limit the generalizability of the findings.
Participant Demographics
All participants were female, aged 19 to 91 years, with a mean age of 56.19 years.
Statistical Information
P-Value
0.035
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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