NEW YORK--(BUSINESS WIRE)--Gentium S.p.A. (Nasdaq: GENT) announced the presentation of both clinical and preclinical data that support the safety, activity, synergy and potential mechanism of action of Defibrotide in combination with anticancer therapy in multiple myeloma. Investigators presented both an update from the Company’s ongoing Phase I/II clinical trial for patients with refractory or relapsed multiple myeloma with Defibrotide in combination with chemotherapy, as well as a pre-clinical study demonstrating the downregulation of a key regulatory enzyme supporting a novel mechanism of action for Defibrotide in myeloma. Data from both studies was presented at the XI International Myeloma Workshop in Kos, Greece, 25-30 June, 2007.