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Prognostic impact of the inclusion of uPA/PAI-1 for adjuvant treatment decision-making in ER+/Her2− pN0 early breast cancers

Abstract : PURPOSE: Intermediate-risk early breast cancer (EBC) is a heterogeneous group in which adjuvant chemotherapy decision proves to be difficult. Clinical and pathological criteria are sometimes insufficient to determine the best therapeutic options, and validated biomarkers such as uPA/PAI-1, are needed to contribute to the decision-making. The objective of this study was to evaluate the clinical outcome of an unselected ER+/HER2- pN0 EBC cohort of patients in whom the routine clinical decision process included a prospective uPA/PAI-1 determination. METHOD: This monocentric retrospective study included 520 patients who underwent curative surgery in our institute between 2006 and 2011. Adjuvant therapeutic strategy was decided based on clinical-pathological data, altogether with a routine prospective determination of uPA/PAI-1 tumor levels using fresh, extemporaneously sampled tissue. We evaluated the correlation between uPA/PAI-1 levels, clinical-pathological variables, and the patient's outcome (relapse-free survival, RFS, and overall survival, OS). RESULT: Median follow-up was 5.4 years. The 5- and 10-year RFS rates were ,respectively, 95 and 89%, and the five-year OS rate was 96.3%. Forty percent of tumors had low uPA/PAI-1 levels. Seventy-five percent of patients with low uPA/PAI-1 levels did not receive chemotherapy, when 25% did. Sixty percent of patients with high uPA and/or PAI-1 levels received chemotherapy, while 40% did not. No statistical significant correlation was found between the uPA/PAI-1 levels and RFS or OS. CONCLUSION: The personalization of the patients' treatment using uPA/PAI-1 tumor levels allows the reversion of the well-known poor prognostic impact of high uPA/PAI-1 levels and strongly supports the use of this biomarker in clinical practice.
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https://hal.umontpellier.fr/hal-02430641
Contributeur : Amandine Michel-Avella <>
Soumis le : mardi 7 janvier 2020 - 14:28:16
Dernière modification le : mercredi 8 janvier 2020 - 01:47:47

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Marie Viala, Marie Alexandre, Simon Thèzenas, Pierre-Jean Lamy, Aurélie Maran-Gonzalez, et al.. Prognostic impact of the inclusion of uPA/PAI-1 for adjuvant treatment decision-making in ER+/Her2− pN0 early breast cancers. Breast Cancer Research and Treatment, Springer Verlag, 2017, 165 (3), pp.611-621. ⟨10.1007/s10549-017-4373-7⟩. ⟨hal-02430641⟩

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