Low BMI-1 Expression Linked to Aggressive Endometrial Cancer
Author Information
Author(s): Engelsen I B, Mannelqvist M, Stefansson I M, Carter S L, Beroukhim R, Øyan A M, Otte A P, Kalland K H, Akslen L A, Salvesen H B
Primary Institution: Haukeland University Hospital, Bergen, Norway
Hypothesis
BMI-1 is associated with aggressive endometrial cancer.
Conclusion
Low BMI-1 expression is significantly correlated with aggressive features in endometrial carcinomas.
Supporting Evidence
- BMI-1 protein expression was significantly weaker in tumors with vascular invasion.
- Low BMI-1 expression correlated with loss of estrogen and progesterone receptors.
- Activation of an 11-gene signature was inversely correlated with BMI-1 expression.
Takeaway
This study found that when a protein called BMI-1 is low in endometrial cancer, it often means the cancer is more aggressive and harder to treat.
Methodology
The study analyzed BMI-1 expression in two patient series, one retrospective with 316 patients and one prospective with 57 patients, using immunohistochemistry and mRNA analysis.
Potential Biases
Potential bias in patient selection and retrospective data collection.
Limitations
The study may have selection bias and the follow-up period varied among patients.
Participant Demographics
Patients diagnosed with endometrial carcinoma in Hordaland County, Norway.
Statistical Information
P-Value
p<0.0001
Statistical Significance
p<0.0001
Digital Object Identifier (DOI)
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