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PRAME expression and clinical outcome of breast cancer
M T Epping1, A A M Hart, A M Glas
1Division of Molecular Carcinogenesis and Centre for Biomedical Genetics, The Netherlands Cancer Institute, Plesmanlaan 121, Amsterdam 1066 CX, The Netherlands.
Abstract:
The tumour antigen PReferentially expressed Antigen of MElanoma (PRAME) is expressed in a variety of malignancies, including breast cancer. We have analysed PRAME gene expression in relation to clinical outcome for 295 primary breast cancer patients. Kaplan-Meier survival curves show a correlation of PRAME expression levels with increased rates of distant metastases and decreased overall patient survival. This correlation existed both for the entire patient group (n=295) and for the subgroup of patients (n=185) who did not receive adjuvant chemotherapy. Multivariable analysis indicated that PRAME is an independent marker of shortened metastasis-free interval in patients who did not receive adjuvant chemotherapy. PRAME expression was associated with tumour grade and negative oestrogen receptor status. We conclude that PRAME expression is a prognostic marker for clinical outcome of breast cancer, independent of traditional clinicopathological markers.
Insights
High PReferentially expressed Antigen of MElanoma (PRAME) gene expression in breast cancer patients correlates with increased metastasis and decreased survival. PRAME serves as an independent prognostic marker for breast cancer outcomes.
Area of Science:
- Oncology
- Molecular Biology
- Genetics
Background:
- The tumor antigen PReferentially expressed Antigen of MElanoma (PRAME) is implicated in various cancers.
- PRAME expression has been observed in breast cancer tissues.
Purpose of the Study:
- To investigate the correlation between PRAME gene expression and clinical outcomes in primary breast cancer patients.
- To determine if PRAME expression is an independent prognostic marker for breast cancer patients.
Main Methods:
- Analysis of PRAME gene expression in 295 primary breast cancer patients.
- Kaplan-Meier survival analysis to assess the relationship between PRAME levels and survival rates.
- Multivariable analysis to evaluate PRAME as an independent prognostic factor.
Main Results:
- Elevated PRAME expression correlated with higher rates of distant metastases.
- Increased PRAME levels were associated with decreased overall patient survival.
- PRAME was an independent predictor of a shortened metastasis-free interval, particularly in patients not receiving adjuvant chemotherapy.
- PRAME expression was linked to higher tumor grade and negative estrogen receptor status.
Conclusions:
- PRAME gene expression is a significant prognostic marker for breast cancer patient outcomes.
- PRAME provides prognostic information independent of established clinicopathological markers.
- PRAME warrants further investigation as a potential therapeutic target or biomarker in breast cancer management.
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