Despite robust available data supporting the efficacy of oral endocrine therapy (ET) for the treatment of breast cancer and the low adherence to this life-saving treatment, only 6 randomized controlled trials have assessed interventions to improve adherence to ET; only 1 showed modest short-term benefit. ET adherence is critical, as 10-year survival decreases from 81% when adherent to 74% when non-adherent to ET. The investigators propose a first of its kind, randomized, culturally tailored mHealth intervention trial called "EmSHAPE"- Engaging mobile health for symptom monitoring and health promotion for endocrine therapy - among newly diagnosed women with early hormone receptor positive breast cancer. Prior intervention studies have not been effective.
