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Imaging Diagnostic and Therapeutic Targets: Steroid Receptors in Breast Cancer.

ABSTRACT: Estrogen receptor alpha (ER?) and progesterone receptor (PR) are important steroid hormone receptor biomarkers used to determine prognosis and to predict benefit from endocrine therapies for breast cancer patients. Receptor expression is routinely measured in biopsy specimens using immunohistochemistry, although such testing can be challenging, particularly in the setting of metastatic disease. ER? and PR can be quantitatively assayed noninvasively with PET. This approach provides the opportunity to assess receptor expression and function in real time, within the entire tumor, and across distant sites of metastatic disease. This article reviews the current evidence of ER? and PR PET imaging as predictive and early-response biomarkers for endocrine therapy.

SUBMITTER: Fowler AM

PROVIDER: S-EPMC4795822 | biostudies-literature | 2016 Feb

REPOSITORIES: biostudies-literature

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Imaging Diagnostic and Therapeutic Targets: Steroid Receptors in Breast Cancer.

Fowler Amy M AM Clark Amy S AS Katzenellenbogen John A JA Linden Hannah M HM Dehdashti Farrokh F

Journal of nuclear medicine : official publication, Society of Nuclear Medicine 20160201

Estrogen receptor alpha (ERα) and progesterone receptor (PR) are important steroid hormone receptor biomarkers used to determine prognosis and to predict benefit from endocrine therapies for breast cancer patients. Receptor expression is routinely measured in biopsy specimens using immunohistochemistry, although such testing can be challenging, particularly in the setting of metastatic disease. ERα and PR can be quantitatively assayed noninvasively with PET. This approach provides the opportunit ...[more]

PMID: 26834106

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