Although the dual anti-HER2 therapy, namely, pertuzumab plus trastuzumab and docetaxel, has shown promising results in HER2+ breast cancer patients, whether the dose, efficacy and safety of this treatment differs from those of other pertuzumab-based dual anti-HER2 therapies remain controversial. | Efficacy and safety of HER2 inhibitors in combination with or without pertuzumab for HER2-positive breast cancer A systematic review and meta-analysis