Which Cancer is Curable with Pertuzumab 420mg Injection? It is useful to treat breast cancer HER-2 type. Pertuzumab 420mg Injection is a prescription based injection that should be given to the patient via a medical attendant or nursing staff. As it is a prescription based medicine, do not forget to consult the doctor about the dosage. https://www.magicinepharma.com/injection/perjeta-pertuzumab