2637 Baseline circulating tumor cells (CTC) and serum heat shock protein 27 (Hsp27) levels are increased in advanced bladder cancer (BC) patients with poor prognostic factors: Results from the randomized phase 2 Borealis-1™ trial of first-line gemcitabine/cisplatin plus apatorsen or placebo. (September 2015) - Petrylak, D.