Managing metastatic human epidermal growth factor receptor 2 (HER2)-positive breast cancer in the older patient

Treating older patients with metastatic human epidermal growth factor receptor 2 (HER2)-positive breast cancer is often challenging. This is largely due to the issues providers face in making decisions in the setting of limited efficacy and toxicity data specific to older women in addition to the competing challenges of managing comorbidity and preserving functional status. Here, we discuss currently available treatment regimens and other important issues to consider when treating older patients with metastatic, HER2-positive disease.