The authors thank P. Ponsaerts (Laboratory of Experimental Hematology, UA) for assistance with FACS experiments, H. Berghmans (Group of Protein Chemistry of PPES Laboratory, UA) for uPA activity data analysis, R. Limame (Laboratory of Cancer Research and Clinical Oncology, UA/Antwerp University Hospital) and all lab members for valuable scientific discussions. This evidence concerns the gene PLAU and cancer.