15140 Background: Since 1999 we had been studying the effect of chemotherapy in gallbladder cancer, a disease frequent in low economical income area of the world, orphan of research, traditionally considered chemotherapy-resistant. Previous studies included 5- FU regimen and communicated response rate of 10–26 %, and no changes on survival. We first conducted a phase II study with gemcitabine (Gem), and later, another study (with support of GOCCHI) using Gem and cisplatin (C). Since 2001 we had treated patients out of clinical trial. We compare median survival observed in all series. Methods: Patients file of both 2 phase II studies and clinical record of all patients treated out of clinical trial were retrieved and median survival was calculated. The both phase two trials had a similar population, and inclusion criteria, both were multicenters. The third cohort is a one center experience. The regimens used were: Gem 1,000 mg/m2 on days 1,8 and 15 every 28 days (first trial), Gem 1,250 mg/m2+C 35 mg/m2 on the 1 and 8 days every 21 days (second trial), only maximum 6 courses were planned. The third group, most frequently, received Gem 1.000 mg/m2 (10mg/m2/min)+C 40 mg/m2 days 1 and 8 every 21 days, until disease progression and/or toxicity; second line chemotherapy was allowed. Among whole group 7 pts, who had significant response, underwent a surgical resection. Survival was also calculated and comparison is included. The toxicity was evaluated every 2 weeks and response was assessed every two cycles using CT scan. Overall survival was calculated from beginning of chemotherapy until death or last follow up. Survival analysis was also done using Kaplan Meier’s tables Results: For Gem monotherapy (26 pts) median survival was 30 weeks, for Gem+C (44 pts) median survival was 28 weeks. For third group (29 pts) median survival was 56 weeks. Until now, for the 7 pts who underwent a surgical resection median survival is 92 weeks, with one pt alive, without evidence of disease, at 112 weeks of follow up Conclusions: Both regimens showed better efficacy than 5-FU based chemotherapy, the combination did not show better survival. The third group has better median survival, probable due to the use of second line therapies. Combining chemotherapy + surgical resection may be a better treatment for some few, well selected patients. No significant financial relationships to disclose.