Patients with advanced UC , measurable disease , and adequate organ function were randomized 1:2 to cisplatin ( 70 mg/m ( 2 ) ) on day 1 plus gemcitabine ( 1000 mg/m ( 2 ) ) on days 1 , 8 , and 15 ( arm A ) or GC plus CTX ( 500 mg/m ( 2 ) ) on days 1 and 15 ( arm B ) .