FREDERICK, Md. -- A novel agent now being tested in human clinical trials of breast and other cancers may also prove to be a candidate for treating lung cancer, the No. 1 cancer killer worldwide.

The targeted treatment uses a new approach to destroy cancer cells. It attacks the basic machinery that malignant cells use to reproduce themselves. The machinery malfunctions and the cells die. Normal cells, however, are relatively unaffected, potentially eliminating many side effects.

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