HER2
A protein that's overexpressed in some breast and gastric cancers, drives targeted therapy choice.
HER2 (human epidermal growth factor receptor 2) status is tested on breast and gastric cancer specimens. HER2-positive cancers respond to targeted therapies (trastuzumab, pertuzumab, T-DM1).
What this means for you: confirm HER2 testing has been done on your tumor. Without it, you may receive inferior therapy.
What a term means for you depends on your own reports. Ask your treating doctor, or send your reports for a free review.