SAN ANTONIO (EGMN) - Annual breast cancer screening by mammography plus MRI is insufficient for BRCA1 mutation carriers, according to the midterm results of the Dutch MRI Screening Study."It's clear the interval cancer rate is much higher in BRCA1 carriers than in any other group, so I think we'll have to adapt the screening procedure for this subgroup in such a way that we have more frequent imaging - maybe every half-year," Dr. Jan G.M. Klijn, project leader for the landmark Dutch national study,...