Skip to Content

HER2 Immunohistochemistry Testing in Metastatic Breast Cancer: Guiding Treatment Decisions and the Role of Sacituzumab Govitecan

Download PQI pdf 0.23MB

Last Updated: January 5, 2026

By: Sydney Schultz, PharmD, BCOP

About this PQI

This document discusses the clinical application and implications of HER2 IHC testing in metastatic triple-negative breast cancer (mTNBC) and metastatic hormone receptor-positive (mHR+) HER2-negative breast cancer.

How to Use a Positive Quality Intervention (PQI)

Essentially, it’s a tool to improve patient care by sharing best practices in oncology care.

Consider this standardized, peer-review clinical guidance to oncology healthcare teams, enabling you and your team to consistently deliver high-quality care to your patients.

Find a PQI