Cisplatin and gemcitabine for advanced biliary tract cancer: a meta-analysis of two randomised trials

Annals of Oncology : Official Journal of the European Society for Medical Oncology
J W ValleT Okusaka

Abstract

Two recent studies (ABC-02 [UK] and BT22 [Japan]) have demonstrated the superiority of cisplatin and gemcitabine (CisGem) chemotherapy over gemcitabine (Gem) alone for patients with pathologically proven advanced biliary tract cancer (BTC: cholangiocarcinoma, gallbladder and ampullary cancers). This pre-planned analysis evaluates the efficacy of CisGem with increased statistical power. We carried out a meta-analysis of individual patient-level data of these studies to establish the effect of CisGem versus Gem on progression-free survival (PFS), overall survival (OS) and carried out exploratory subgroup analyses. CisGem demonstrates a significant improvement in PFS [hazard ratio (HR)=0.64, 95% confidence interval (CI) 0.53-0.76, P<0.001] and OS (HR=0.65, 95% CI 0.54-0.78, P<0.001) over Gem. This effect is most marked among patients with good performance status (PS 0-1): HR for PFS is 0.61 (95% CI 0.51-0.74), P<0.001 and OS HR=0.64 (95% CI 0.53-0.77), P<0.001. CisGem resulted in improved PFS and OS for intra- and extra-hepatic cholangiocarcinomas and gallbladder cancer. The treatment effect between UK and Japanese patients was consistent with respect to OS (HR=0.65, 95% CI 0.53-0.79 and 0.65, 95% CI 0.42-1.03, respectively); with...Continue Reading

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