Overview S1 Plus Docetaxel Versus Capecitabine Plus Docetaxel First-line Treatment in Patients With Advanced Breast Cancer Status: Unknown status Trial end date: 2019-04-01 Target enrollment: Participant gender: Summary To compare the progression free survival(PFS) and safety of TS-S vs. TX-X in Patients With Advanced Breast Cancer first-line treatment Phase: Phase 2 Details Lead Sponsor: Chinese Academy of Medical SciencesTreatments: CapecitabineDocetaxel