ERBB2 and breast cancer: fabricated an innovative bio‐piezoelectric nanoplatform based on BaTiO3 nanoparticles for ultrasound‐activated anticancer treatment.[27a] This work considered the overexpression of human epidermal growth factor type 2 receptor (HER2) in breast cancers,[142] where the bio‐piezoelectric BaTiO3 nanoparticles were functionalized with an anti‐HER2 antibody to target breast cancer cells, see Figure 7a–e.