Lpropane-1,3-diamine. Acknowledgements We especially thank the patients and surgeons, pathologists, and internists for their assistance in collecting tumor tissues and patients' clinical follow-up data. We thank Joan Bolt, Marion Meijer, Mieke Timmermans, Anita Trapman, and Wendy van der Smissen for their excellent technical support. This work was financially supported by VICI grant 918-66-615 (aw