Recommendations for Human Epidermal Growth Factor Receptor 2 Testing in Breast Cancer: American Society of Clinical Oncology/College of American Pathologists Clinical Practice Guideline Update

A clinical practice guideline for human epidermal growth factor receptor 2 testing in breast cancer. The guideline examines testing and results follow up for oncologists and pathologists in the United States. Outcomes of interest include optimal performance and reporting of assays, and improved education for providers.