Guideline panelist Hammond added that women who are newly diagnosed with invasive breast cancer should ask if the medical center where they're receiving testing and treatment is following the ASCO/CAP guidelines. "If I were a patient with breast cancer, I would want to make sure that my tissue sample was examined by a facility that's following the guidelines," Hammond said.
The new guidelines were released online Oct. 7 in the Journal of Clinical Oncology and also appear in the Archives of Pathology & Laboratory Medicine.
Learn more about HER2 testing and breast cancer treatments from the U.S. National Cancer Institute.
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