Overview Combination of Trastuzumab and NK Immunotherapy for Recurrent Breast Cancer Status: Completed Trial end date: 2019-07-01 Target enrollment: Participant gender: Summary The aim of this study is the safety and efficacy of Trastuzumab plus natural killer(NK) immunotherapy to recurrent breast cancer. Phase: Phase 1/Phase 2 Details Lead Sponsor: Fuda Cancer Hospital, GuangzhouCollaborator: Shenzhen Hank Bioengineering InstituteTreatments: Trastuzumab