VILLA GUARDIA (COMO), Italy--(BUSINESS WIRE)--Gentium, S.p.A. (NASDAQ:GENT) (the “Company”) today reported that its lead investigational product, Defibrotide, will be the subject of two poster presentations at the American Association for Cancer Research’s (AACR) Annual Meeting being held at the Los Angeles Conference Center in Los Angeles, California, from April 14-18, 2007.