From The BBC:
Scientists have pinpointed a gene linked to more than half of all breast cancers.
The gene, NRG1 (neuregulin-1), is also thought to play a role in many bowel, prostate, ovarian and bladder tumours.
The University of Cambridge team said the breakthrough should provide "vital information" about how cancer spreads.
Experts agreed the finding, published in the journal Oncogene, could represent a very significant advance in the fight against cancer.
Read more ....