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2001: Nemunaitis J; Cunningham C; Buchanan A; Blackburn A; Edelman G; Maples P; Netto G; Tong A; Randlev B; Olson S; Kirn D
Intravenous infusion of a replication-selective adenovirus (ONYX-015) in cancer patients: safety, feasibility and biological activity.
Gene therapy 2001;8(10):746-59.
Although genetically engineered adenoviruses hold promise for the treatment of cancer, clinical trial reports have utilized intratumoral injection to date. To determine the feasibility of intravenous delivery of ONYX-015, an E1B-55kD gene-deleted replication selective adenovirus with demonstrated clinical safety and antitumoral activity following intratumoral injection, we performed a clinical trial in patients with metastatic solid tumors. ONYX-015 was infused intravenously at escalating doses of 2 x 10(10) to 2 x 10(13) particles via weekly infusion within 21-day cycles in 10 patients with advanced carcinoma metastatic to the lung. No dose-limiting toxicity was identified. Mild to moderate fever, rigors and a dose-dependent transient transaminitis were the most common adverse events. Neutralizing antibody titers significantly increased within 3 weeks in all patients. IL-6, gamma-IFN, TNF-alpha and IL-10 increased within 24 h following treatment. Evidence of viral replication was detectable in three of four patients receiving ONYX-015 at doses > or = 2 x 10(12) particles and intratumoral replication was confirmed in one patient. In conclusion, intravenous infusion of ONYX-015 was well tolerated at doses up to 2 x 10(13) particles and infection of metastatic pulmonary sites with subsequent intratumoral viral replication was seen. The intravenous administration of genetically altered adenovirus is a feasible approach.

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