Abstract
Background
An oncolytic herpes simplex virus type 1 mutant (HF10) has been isolated and evaluated for antitumor efficacy in a syngeneic immunocompetent mouse model, where it was effective against cancer and conferred resistance to rechallenge with tumor cells in all surviving mice. Several studies have shown that HF10 is effective and safe for use against localized or peritoneally disseminated nonneuronal malignant tumors in animals.
Methods
A pilot study using HF10 was initiated in six patients with cutaneous or subcutaneous metastases from breast cancer. For each patient, .5 mL of HF10 suspension containing various viral doses was injected into one nodule; .5 mL of sterile saline was injected into another. All patients were monitored for local and systemic adverse effects. Nodules were excised 14 days after injection for histopathologic studies.
Results
All patients tolerated the intratumoral injection of HF10. No adverse effects occurred, and histopathological evaluation revealed 30% to 100% cancer cell death.
Conclusions
This pilot study found HF10 to be safe and effective against metastatic breast cancer.
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Acknowledgments
Supported by the Japan Society for the Promotion of Science (JSPS KAKENHI 16390358), a grant (04-23609) from the Princes Takamatsu Cancer Research Fund, and Takeda Printing Company Limited. The authors thank Yoko Nishikawa, Tama Tsuruguchi, and Eiko Iwata for their technical support and assistance.
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Kimata, H., Imai, T., Kikumori, T. et al. Pilot Study of Oncolytic Viral Therapy Using Mutant Herpes Simplex Virus (HF10) Against Recurrent Metastatic Breast Cancer. Ann Surg Oncol 13, 1078–1084 (2006). https://doi.org/10.1245/ASO.2006.08.035
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DOI: https://doi.org/10.1245/ASO.2006.08.035