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Original Article |
, for Patients With Advanced Solid Tumors: Surgical Experience and Long-Term Follow-Up
1 Department of Surgery, Sammons Cancer Center of Baylor University Medical Center, Worth Street #420, Dallas, Texas 75246
2 Mary Crowley Medical Research Center, Texas Oncology PA, 3500 Gaston Avenue, Dallas, Texas 75246
Correspondence: Address correspondence and reprint requests to: Todd M. McCarty, MD; E-mail: toddmc{at}baylorhealth.edu.
Background: Over the last several years, attempts have been made to use the tumoricidal effects of tumor necrosis factor (TNF)-
to treat cancer. Many of these studies demonstrated dose-limiting systemic side effects from high concentrations of TNF-
. The recent focus has been on developing a local delivery system for TNF-
to minimize the systemic response.
Methods: This study was part of a phase I open-label multi-institutional trial using TNFerade. We focus on the patients treated at Baylor University Medical Center and provide postoperative and long-term follow-up. TNFerade uses a second-generation nonreplicating adenovirus as the vector for delivery of the human transgene TNF-
. An early growth response 1 promoter was placed upstream from the TNF-
gene. This promoter is activated by ionizing radiation, thus allowing for temporal and spatial control of TNF-
release. Tumors were injected over 5 weeks with ionizing radiation given 3 days after injections for 6 weeks. Tumor response was measured by computed tomographic imaging and physical examination.
Results: As described in our original experience, no patients experienced dose-limiting toxicities up to doses of 4 x 1011 particles per injection. Tumors injected demonstrated a response independently of histology. Four patients had complete regression of the tumor injected. Three patients with complete regression have survived
2 years from the time of treatment.
Conclusions: Both short-term and long-term safety are observed with TNFerade. These data demonstrate the need for phase II trials.
Key Words: TNFerade Tumor necrosis factor
Adenovirus Phase I
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