SAN FRANCISCO (EGMN) - A new urinary assay for a common gene rearrangement in prostate cancer improves the detection of this disease and the differentiation of its more aggressive forms, according to two cohort studies reported at a symposium on genitourinary cancers.The studies, conducted among men who were scheduled for prostate biopsy or prostatectomy, found that the assay supplemented conventional risk factors for accurately identifying those having prostate cancer. In addition, higher assay...