Abstract P2-01-10: Immunocytochemistry staining for estrogen and progesterone receptor in circulating tumor cells: Concordance between primary and metastatic tumors.
Abstract:Introduction: Estrogen (ER) and progesterone receptor (PR)) status is recommended by immunohistochemistry (IHC) and is considered standard practice for selection of treatment options in all breast cancer patients. Because biopsy is not often feasible in every patient presenting with recurrent and/or metastatic disease, circulating tumor cells (CTCs) offer an attractive alternative source of tumor tissue for determining ER/PR status. In addition, CTCs enable monitoring for more effective course of treatment.
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