Pyrotinib in HER2-positive Early Breast Cancer

Patients who meet the screening criteria will receive pyrotinib (400mg, qd) + trastuzumab injection (first dose 8mg/kg, subsequent 6mg/kg, d1) + albumin purpurenin.In adjuvant therapy, pathological complete response patients receive pyrotinib time to one year, non-pathological complete response patients with RCB-1 receive Trastuzumab Emtansine time to one year，RCB≥2 were treated with Trastuzumab Emtansine combined with pertuzumab time to one year.