Targeting PAM50 Her2-Enriched Phenotype With Enzalutamide in Hormone Receptor-Positive/Her2-Negative Metastatic Breast Cancer

2019-10-31 14:29:34 | BioPortfolio


The main hypothesis of the study is that enzalutamide induces a significant proliferative arrest in HR+/HER2-negative breast cancer falling into the PAM50 HER2-E subtype. Currently, enzalutamide clinical development is ongoing in different prostate cancer indications but the breast cancer development program has been discontinued. As the role of the AR in HR-positive breast cancer and the predictive value of previously identified biomarker are still unclear, further research is needed to effectively utilize enzalutamide in this disease.


A strong rationale accumulated over the years suggests that within HR+/HER2-negative breast cancer, tumors falling into the PAM50 HER2-enriched subtype have androgen receptor (AR)-dependency. To test this hypothesis directly in patients' tumors, we propose an exploratory, open-label, non-randomized, two-cohort, multicenter, prospective, phase II study which evaluates the effect of enzalutamide on proliferation after 2 weeks (14-21 days) of treatment in patients with endocrine-resistant, locally advanced or metastatic HR+/HER2-negative breast cancer. After 2 weeks (14-21 days) of treatment, patients will continue enzalutamide. Exemestane will be allowed to be added to enzalutamide per investigator discretion and will be administered until progression or unacceptable toxicity.

Study Design


Breast Cancer




ICO Badalona


Not yet recruiting


SOLTI Breast Cancer Research Group

Results (where available)

View Results


Published on BioPortfolio: 2019-10-31T14:29:34-0400

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Abnormal accumulation of lymph in the arm, shoulder and breast area associated with surgical or radiation breast cancer treatments (e.g., MASTECTOMY).

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