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      We have expanded our resource library so you can now explore content on HER2 in tumors beyond breast.

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Gastric Resources

Discover resources to support your gastric HER2 IHC clinical practice.

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ASCO-ASCP-CAP Gastric HER2 Testing Guidelines
ASCO-ASCP-CAP Gastric HER2 Testing Guidelines

GUIDELINES

ASCO-ASCP-CAP gastric HER2 testing guidelines

Recommendations for improving accuracy and standardization of HER2 testing in gastric cancer.

Scoring and Reporting HER2 in Gastrointestinal Tumors
Scoring and Reporting HER2 in Gastrointestinal Tumors

GUIDE

Scoring and reporting HER2 in gastrointestinal tumors

A downloadable summary of recommendations for HER2 testing in gastrointestinal tumors.

Identifying HER2 in Solid Tumors: Testing to Inform Patient Care
Identifying HER2 in Solid Tumors: Testing to Inform Patient Care

Clinical Practice Support

Identifying HER2 in solid tumors: testing to inform patient care

Guide to HER2 testing in solid tumors, which includes information on when and how to order the test and interpret results.

ASCO, American Society of Clinical Oncology; ASCP, American Society of Clinical Pathology; CAP, College of American Pathologists; HER2, human epidermal growth factor 2; IHC, immunohistochemistry.

Breast Cancer Resources
Breast Cancer Resources

Breast Cancer Resources

Discover educational materials on HER2 in breast cancer designed to support you in refining HER2 IHC assessment.

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Welcome to HER2Know

This website is intended to help healthcare professionals practicing in the United States find and access scientifically balanced, evidence-based, and peer-led information and professional resources in support of HER2 IHC evaluation. The dissemination of this information may be subject to different medical and regulatory requirements in other countries. This information is provided for educational purposes only. It is not intended for use in the diagnosis or treatment of individual patients. Are you a healthcare professional practicing in the United States?

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