Pertuzumab adds 16 months survival benefit to trastuzumab and chemotherapy treatment for HER2-positive metastatic breast cancer

Patients with HER2-positive breast cancer that has spread to other parts of their body live around 16 months longer if treated with a combination of pertuzumab, trastuzumab and chemotherapy compared to those treated with trastuzumab and chemotherapy alone, updated results from the CLEOPATRA study reveal.