Endocrine hormonal therapy (EHT) applied to avoid recurrence and metastasis of the breast cancer has also side effects which do not threaten life; however, it does negatively effects quality of life. The objective of this study was to determine the effects on quality of life of a mobile app-based (e-mobile) education for supportive care of patients with breast cancer receiving adjuvant endocrine hormonal therapy. The data were collected to with face to face and/or telephone interviews at 2 time points: prior to the initiation (T0) and after the completion (T1) of mobile app-based education. Patients were received education via mobile app for 12 weeks during which they were contacted in every 15 days; a mobile app-based (e-mobile) education was provided, including information about breast cancer definition, treatment process, symptoms management, adequate nutrition, regular physical activity and coping with stress. In this process, the control group patients were provided with standard care.

Mobile devices have an increasing role for the patient care and its use in the field of oncology creates promising opportunities for supportive cancer care and patient education. Mobile applications were established for the supportive cancer care but their area of use is limited. Although there are many field specific medical mobile applications, there are few training programs for the benefit of patients. However, these are innovative tools and provide accessibility, individual training and consultancy in order for the patients to be able to cope with side effects of the treatment; thus, improving their quality of life, symptom management and distress.

Inclusion Criteria:

• Diagnosed with primary breast cancer,
• Non-metastatic,
• Hormone receptor positive (ER positive and/or PR positive)
• For whom adjuvant EHT was implemented at least for three months

Exclusion Criteria:

• Diagnosed with secondary breast cancer,
• Metastatic,
• Hormone receptor negative (ER negative and/or PR negative)