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© Oxford University Press 2006.
NEWS |
Endostatin: Are We Waiting For Godot?
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After trials of the angiogenesis inhibitor endostatin ended, Judah Folkman, M.D., of the Children's Hospital Boston and Harvard Medical School was dismayed.
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"There are four patients who have been on endostatin for 3.5 years or more with metastases of the liver. The tumors have stopped growing or arrested, mainly arrested. [The patients] love the drug. They don't lose their hair, they [maintain] normal weight, they're not nauseated, they go back to work, and they have strength."
But the clinical studies of endostatin stopped in February 2005, and supplies ran out a few months later. "After August 2, 2005, there was no more [endostatin] in the United States," said Folkman, whose laboratory discovered the molecule about a decade ago.
Endostatin is a protein produced by a fragment of the human gene collagen XVIII. Research by Folkman and others showed it could be a potent inhibitor of angiogenesis, a
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