PERJETA is a HER2/neu receptor antagonist indicated for:...Use in combination with trastuzumab and chemotherapy as...neoadjuvant treatment of patients with HER2-positive, locally advanced, inflammatory, or early stage breast cancer (either greater than 2 cm in diameter or node positive) as part of a complete treatment regimen for early breast cancer....adjuvant treatment of patients with HER2-positive early breast cancer at high risk of recurrence...