PT - JOURNAL ARTICLE AU - Duffy, Michael J. AU - Reilly, David AU - O'Sullivan, Cathriona AU - O'Higgins, Niall AU - Fennelly, James J. AU - Andreasen, Peter TI - Urokinase-Plasminogen Activator, a New and Independent Prognostic Marker in Breast Cancer DP - 1990 Nov 01 TA - Cancer Research PG - 6827--6829 VI - 50 IP - 21 4099 - http://cancerres.aacrjournals.org/content/50/21/6827.short 4100 - http://cancerres.aacrjournals.org/content/50/21/6827.full SO - Cancer Res1990 Nov 01; 50 AB - Urokinase plasminogen activator (UK-PA) is a serine protease implicated in cancer invasion and metastasis. In this investigation, patients with breast cancers containing high levels of UK-PA antigen had significantly higher risk of early disease recurrence and shorter overall survival than did patients with low levels of the protein. In univariate analysis, UK-PA was a more powerful discriminator for disease-free interval than axillary node status, tumor size, or estradiol receptor. For overall survival, UK-PA as a prognostic marker, was of similar magnitude to axillary node status but stronger than that of tumor size or estradiol receptor. In multivariate analysis, for both disease-free interval and survival, UK-PA was an independent risk factor, being independent of tumor size, axillary node status, and estradiol receptor. UK-PA appears to be a new and independent prognostic marker in breast cancer. ©1990 American Association for Cancer Research.