U.S. researchers have nailed down one reason why people with Down's syndrome rarely get cancer -- they have extra copies of a gene, DSCR1, that helps starve tumors by suppressing development of a blood supply to feed them. The findings could lead to new treatments for cancer, the researchers reported in the journal Nature.
The researchers at Harvard University and elsewhere showed that genetically engineered mice with an extra copy of DSCR1 were resistant to tumors.
