Adjuvant treatments has significantly improved the prognosis of early breast cancer patients. However, previous studies suggested the existence of noncompliance to adjuvant therapies, which might cause detriments to disease outcomes. The goal of this multicentric randomized controlled clinical trial is to test the role of mobile medical application (APP) on adjuvant therapy compliance and quality of life (QoL) in patients with early breast cancer. Patients diagnosed with invasive breast cancers after surgery will be randomly assigned to the Ruijin Breast Cancer APP (RJBC-APP) group or the Control group. Those in the RJBC-APP group can receive treatment reminders, matters needing attention as well as science knowledge and they can communicate with the medical staff during adjuvant treatments while follow-up can only be conducted in outpatient clinic for those in the Control group. The primary endpoint is the rate of adjuvant therapy compliance at 12 months after randomization. Secondary endpoints consist of compliance rates at 3, 6, 24 months after randomization, QoL and cancer-related symptoms scores at 3, 6, 12, 24 months, disease-free survival (DFS) and overall survival (OS) at 60 months.
