Overview Study of the Efficacy and Safety of Letrozole Combined With Trastuzumab in Patients With Metastatic Breast Cancer Status: Terminated Trial end date: 1969-12-31 Target enrollment: Participant gender: Summary Phase IV trial to investigate the effect of the combination of Letrozole with trastuzumab in metastatic breast cancer patients Phase: Phase 4 Details Lead Sponsor: Novartis PharmaceuticalsCollaborator: Roche - Prof. Dr. Jens Huober et al.Treatments: LetrozoleTrastuzumab