Overview Phase II Clinical Study of Pyrotinib Combined With Etoposide to Treat HER2-positive Advanced Breast Cancer Status: Recruiting Trial end date: 2021-12-31 Target enrollment: Participant gender: Summary The purpose of this study is to assess the efficacy and safety of Pyrotinib Combined With Etoposide to Treat HER2-positive Advanced Breast Cancer Phase: Phase 2 Details Lead Sponsor: Chinese Academy of Medical SciencesTreatments: EtoposideEtoposide phosphate