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Erschienen in: Breast Cancer Research and Treatment 3/2018

17.02.2018 | Preclinical study

Prostate-specific membrane antigen in breast cancer: a comprehensive evaluation of expression and a case report of radionuclide therapy

verfasst von: Yuri Tolkach, Heidrun Gevensleben, Ralph Bundschuh, Aydan Koyun, Daniela Huber, Christina Kehrer, Thomas Hecking, Mignon-Denise Keyver-Paik, Christina Kaiser, Hojjat Ahmadzadehfar, Markus Essler, Walther Kuhn, Glen Kristiansen

Erschienen in: Breast Cancer Research and Treatment | Ausgabe 3/2018

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Abstract

Purpose

Prostate-specific membrane antigen (PSMA), a protein product of the folate hydrolase 1 (FOLH1) gene, is gaining increasing acceptance as a target for positron emission tomography/computer tomography (PET/CT) imaging in patients with several cancer types, including breast cancer. So far, PSMA expression in breast cancer endothelia has not been sufficiently characterized.

Methods

This study comprised 315 cases of invasive carcinoma of no special type (NST) and lobular breast cancer (median follow-up time 9.0 years). PSMA expression on tumor endothelia was detected by immunohistochemistry. Further, vascular mRNA expression of the FOLH1 gene (PSMA) was investigated in a cohort of patients with invasive breast cancer provided by The Cancer Genome Atlas (TCGA).

Results

Sixty percent of breast cancer cases exhibited PSMA-positive endothelia with higher expression rates in tumors of higher grade, NST subtype with Her2-positivity, and lack of hormone receptors. These findings were confirmed on mRNA expression levels. The highest PSMA rates were observed in triple-negative carcinomas (4.5 × higher than in other tumors). Further, a case of a patient with metastatic breast cancer showing PSMA expression in PET/CT imaging and undergoing PSMA radionuclide therapy is discussed in detail.

Conclusions

This study provides a rationale for the further development of PSMA-targeted imaging in breast cancer, especially in triple-negative tumors.
Literatur
8.
Zurück zum Zitat Chang SS, Reuter VE, Heston WD et al (1999) Five different anti-prostate-specific membrane antigen (PSMA) antibodies confirm PSMA expression in tumor-associated neovasculature. Cancer Res 59:3192–3198PubMed Chang SS, Reuter VE, Heston WD et al (1999) Five different anti-prostate-specific membrane antigen (PSMA) antibodies confirm PSMA expression in tumor-associated neovasculature. Cancer Res 59:3192–3198PubMed
Metadaten
Titel
Prostate-specific membrane antigen in breast cancer: a comprehensive evaluation of expression and a case report of radionuclide therapy
verfasst von
Yuri Tolkach
Heidrun Gevensleben
Ralph Bundschuh
Aydan Koyun
Daniela Huber
Christina Kehrer
Thomas Hecking
Mignon-Denise Keyver-Paik
Christina Kaiser
Hojjat Ahmadzadehfar
Markus Essler
Walther Kuhn
Glen Kristiansen
Publikationsdatum
17.02.2018
Verlag
Springer US
Erschienen in
Breast Cancer Research and Treatment / Ausgabe 3/2018
Print ISSN: 0167-6806
Elektronische ISSN: 1573-7217
DOI
https://doi.org/10.1007/s10549-018-4717-y

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