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02.11.2017 | Original Article – Clinical Oncology | Ausgabe 2/2018

Journal of Cancer Research and Clinical Oncology 2/2018

Survival benefit of tamoxifen and aromatase inhibitor in male and female breast cancer

Zeitschrift:
Journal of Cancer Research and Clinical Oncology > Ausgabe 2/2018
Autoren:
Holm Eggemann, Udo Altmann, Serban-Dan Costa, Atanas Ignatov

Abstract

Background

Our goal was to compare the survival advantage of tamoxifen (TAM) and aromatase inhibitor (AI) in female (FBC) and male breast cancer (MBC).

Patients and methods

We performed a retrospective study of 2785 FBC and 257 MBC patients treated with hormonal therapy.

Results

The median follow-up was 106 months (range 3–151 months) and 42 months (range 2–115 months) for FBC and MBC, respectively. The patients were divided into two groups according to the hormonal therapy used: TAM-treated and AI-treated. MBC was characterized by older age, advanced tumor stage, and higher rate of lymph node metastases, in comparison with FBC. Matching analysis was performed using six prognostic criteria: patient age, tumor stage, tumor grade, lymph node status, human epidermal growth factor receptor (HER2) status, and administration of chemotherapy. The female and male patients were matched 2:1. In this analysis, 316 women and 158 men treated with TAM, and 60 women and 30 men treated with AI, were included. The overall survival (OS) was estimated by the Kaplan–Meier method and was compared between FBC and MBC. TAM-treated FBC and MBC patients had similar 5-year OS, 85.1 and 89.2%, respectively (p = 0.972). Notably, FBC patients treated with AI had significantly greater 5-year OS (85.0%) in comparison with AI-treated MBC patients (5-year OS of 73.3%; p = 0.028).

Conclusions

The OS of TAM-treated patients with MBC was similar to the OS of TAM-treated FBC patients, whereas AI treatment is associated with poorer survival of MBC patients.

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