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#2712 HORMONET: Study of Tamoxifen in Well Differentiated Neuroendocrine Tumors (NET) and Hormone Receptor Positive Expression

Introduction: We have shown immunohistochemistry (IHC) expression of estrogen (ER) and progesterone receptors (PR) in 20.8% and 18.8% of 96 NET patients (pts). An old clinical trial (Mortel C, 1984) suggested antitumor effects of estrogen/progesterone-directed therapies in NET. Yet the effects of an antiestrogen agent in NET pts whose tumor express ER and/or PR are unknown.

Conference: 17th Annual ENETSConcerence (2020)

Presenting Author: Riechelmann R

Authors: Riechelmann R, Donadio M, Felismino T, Fonseca de Jesus V, Mello C,

Keywords: neuroendocrine, estrogen, progesterone, clinical trial,