VILLA GUARDIA (COMO), Italy--(BUSINESS WIRE)--Sept. 5, 2006--Gentium S.p.A. (NASDAQ:GENT) (the Company) today announced that Gunther Eissner, Ph.D., Department of Hematology, Regensburg University Medical Center, Regensburg, Germany, and Massimo Iacobelli, M.D., Senior Vice President, Scientific Director, Gentium, S.p.A., will make an oral presentation entitled, “Defibrotide Modulates Immune Functions Of Endothelial Cells - Impact For Transplantation And Cancer Therapy,” at the 16th European Congress of Immunology. The Congress is being held from September 6-9, 2006 in Paris, France. The presentation will take place on Thursday afternoon, September 7, 2006 in the Immune Interventions Workshop--Immunohematology Track D section in Room 251 at 3:00 p.m. local time.