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OncoMatch/Clinical Trials/NCT04573231

Evaluation of PSMA in HER2- AR+ Metastatic Breast Cancer

Is NCT04573231 recruiting? Yes, currently enrolling (May 2026). This Phase 2 trial studies 18F-DCFPyL for breast cancer.

Phase 2RecruitingUniversity of Wisconsin, MadisonNCT04573231Data as of May 2026

Treatment: 18F-DCFPyLThe purpose of this research is to determine the expression of prostate specific membrane antigen (PSMA) in human epidermal growth factor receptor 2 (HER2)-negative, androgen receptor (AR)-positive metastatic breast cancer, and to determine its role in resistance to the anti-androgen, bicalutamide. The investigators hypothesize that PSMA expression will correlate with resistance to anti-androgen therapies, as has been documented in prostate cancer, and this can be used to select patients most likely to benefit from these therapies in future clinical trials. 15 people with HER2-negative, AR-positive metastatic breast cancer will be enrolled and be on study for about 3 days.

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Extracted eligibility criteria

Cancer type

Breast Carcinoma

Biomarker criteria

Required: HER2 (ERBB2) wild-type

HER2-negative

Required: AR any tested (≥ 10%)

AR expression of ≥ 10%

Disease stage

Metastatic disease required

Structured fields extracted by AI. May contain errors — verify against the official protocol.

US trial sites

  • University of Wisconsin School of Medicine and Public Health · Madison, Wisconsin

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