Jason Scapa, MD, FCAP, Chair of the Digital Content Committee talks with Andrew Bellizzi, MD, FCAP, Past Chair of the Immunohistochemistry (IHC) Committee and current IHC Committee Member Gregory Bean, MD, PhD, FCAP, about the latest update to HER2 Breast Cancer Testing Guidelines. Issued in June 2023, the CAP and the American Society of Clinical Oncology (ASCO) have reaffirmed the 2018 "HER2 Breast Testing Guideline Focused Update" in response to the results of the 2022 DESTINY-Breast04 trial.CAP HER2 Guideline: https://www.cap.org/protocols-and-guidelines/cap-guidelines/current-cap-guidelines/recommendations-for-human-epidermal-growth-factor-2-testing-in-breast-cancer