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Old 04-29-2020, 10:50 AM   #1
Senior Member
Join Date: Nov 2005
Posts: 357
Discordance in ER/PR/Her2 ; Imaging to detect Hormone Receptor

In the “old” way of doing thing, when primary and met sites were treated as only two “clumps”, the discordant rates between the two were about 17% for er/pr and 8% for her2. With newer technology, the break down has more detail as in the first link below. The tech in the second link is highly useful, since we can’t biopsy often. Incidentally, PR receptor seems to be one of the first to “go away” with endocrine treatment. In one of the Eribulin thread I posted some weeks ago, the research suggested Eribulin changes luminal type and possibly reverse er treatment resistance. We are testing this idea until one of these is widely available ds8201 (approved but not avail), sysd985, tucatinib(approved but not avail), or Margetuximab.


Discordance Rate in Estrogen Receptor, Progesterone Receptor, HER2 Status, and Ki67


Recent Advances in Imaging Steroid Hormone Receptors in Breast Cancer

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