September 7, 2006--A team of researchers at Johns Hopkins University sequenced the protein-coding regions of some 13,000 genes within each of 11 breast tumors and 11 colon tumors. They identified nearly 200 mutated genes, most of which were not previously known to play a role in cancer. Observed changes were not duplicated from one tumor type to the other. Their work is reported in the September 7 online issue of Science (subscription required to read full text of article). Read the statement from the National Institutes of Health.