This trial aims to study the effectiveness of two different wellness-based mobile apps on blood cancer patient outcomes, including sleep, fatigue, anxiety, depression, and blood biomarkers of inflammation (TNF-a, IL-6, IL-8, CRP). The findings of this study may help physicians and researchers better understand how mobile wellness mobile apps can help in managing symptom burden and inflammation in blood cancer patients.

This study will evaluate the efficacy, safety, and pharmacokinetics of adjuvant atezolizumabwhen given in combination with trastuzumab emtansine compared with placebo andtrastuzumab emtansine for patients with residual invasive HER2-positive breast cancerfollowing neoadjuvant taxane-based and HER2-targeted therapy including trastuzumab, whoare at high risk of disease recurrence. The primary endpoint for this study is invasivedisease-free survival (IDFS).