They are treated more aggressively, and these treatments, both pharmacological and invasive, prolong survival.

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Results are due for Sutent in breast cancer, where Avastin slowed the disease but did not prolong survival.

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They said there was no good evidence to support the development of schemes that promoted certain mental attitudes to try to prolong survival.

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"Kadcyla delivers the drug to the cancer site to shrink the tumor, slow disease progression and prolong survival, " said Dr. Richard Pazdur, director of the Office of Hematology and Oncology Products in the FDA's Center for Drug Evaluation and Research, in a statement.

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While the drug combo did meet the first goal of increasing progression-free survival, it failed to prolong overall survival beyond what is normal for patients on chemotherapy without Erbitux.

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