Estrogen receptors (ER) are found in approximately 50% of breast tumor specimens obtained from metastases. The presence of significant ER concentrations in a tumor specimen is associated with a response rate of about 60% to endocrine therapy, while its absence greatly decreases the likelihood of response to endocrine therapy. The present study provides a preliminary analysis of response rate to tamoxifen therapy as a function of ER status.
|Title of host publication||Recent Results in Cancer Research|
|Number of pages||4|
|State||Published - Dec 1 1980|
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