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Related Experiment Videos

Protocols based on steroid receptors: Great Britain.

R D Rubens

    Recent Results in Cancer Research. Fortschritte Der Krebsforschung. Progres Dans Les Recherches Sur Le Cancer
    |January 1, 1984
    PubMed
    Summary

    Steroid receptor status is prognostic in operable and disseminated breast cancer, but not locally advanced disease. Receptor-negative tumors indicate poor response to endocrine therapy, while dual-receptor-positive tumors suggest a good response.

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    Area of Science:

    • Oncology
    • Endocrinology
    • Cancer Biology

    Background:

    • Steroid receptors, including estrogen receptor (ER) and progesterone receptor (PgR), are crucial biomarkers in breast cancer.
    • Their prognostic and predictive value is well-established in various stages of breast cancer.

    Purpose of the Study:

    • To evaluate the prognostic significance of steroid receptor status in different breast cancer contexts.
    • To determine the predictive value of ER and PgR in response to endocrine and cytotoxic therapies.

    Main Methods:

    • Analysis of steroid receptor (ER and PgR) status in breast cancer patients.
    • Correlation of receptor status with prognosis and treatment response (endocrine and cytotoxic).

    Main Results:

    • Steroid receptor status shows prognostic significance in operable and disseminated breast cancer.
    • Absence of both ER and PgR predicts non-response to endocrine therapy.
    • Presence of both ER and PgR indicates a higher likelihood of response to endocrine treatment.
    • Intermediate response rates are observed in tumors with single receptor positivity (ER+ PgR- or ER- PgR+).
    • Receptor status does not influence response to cytotoxic chemotherapy.

    Conclusions:

    • Steroid receptor status is a key prognostic factor in specific breast cancer populations.
    • ER and PgR status effectively guides the selection of endocrine therapy.
    • Receptor status is not a predictor for cytotoxic treatment efficacy.

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