© 2002 by Oxford University Press
Journal of the National Cancer Institute, Vol. 94, No. 2, 82-84,
January 16, 2002
© 2002 Oxford University Press
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Could Less be More? Low-Dose Chemotherapy Goes on Trial
Judah Folkman, M.D., is accustomed to skeptics. When he first proposed, 30 years ago, the existence of a protein in the blood that blocked tumor blood vessel growth, the idea was almost universally ridiculed. Antiangiogenesis, of course, is now mainstream.
In April 2000, Folkman offered a new heresy: continuous, low-dose chemotherapy that, by targeting the endothelial cells that form the tumors blood supply, might work against drug-resistant tumors.
"We said that, in some patients, you may be able to rescue them by changing the schedule and doing antiangiogenic chemotherapy," said Folkman. The idea, also dubbed "low-dose" or "metronomic" chemotherapy, challenged the long-entrenched "more is better" orthodoxy, and many oncologists openly scoffed.
Now Folkmans idea is being put to the test. Three North American clinical trials of metronomic chemotherapy are under way. Each
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