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Significance of BRCA1 expression in breast and ovarian cancer patients with brain metastasis - A multicentre study.

Abstract：

PURPOSE:Cerebral metastases develop in 10-30% of patients with breast cancer (BC) and in around 3.3 to 4% of patients with ovarian cancer (OC). The aim of the multicenter study is to investigate the correlation between the expression of estrogen alpha receptors (ERα), progesterone receptors (PR), human epidermal growth factor receptor 2 (HER2), stromal cell-derived factor 1 (SDF1) and its receptor C-X-C chemokine receptor type 4 (CXCR4), breast cancer metastasis suppressor 1 (BRMS1), astrocyte elevated gene 1 (AEG1), depending on the status of BRCA1 protein, in patients suffering from OC and BC with brain metastases. PATIENTS AND METHODS:The analysis included 51 patients: 29 with BC and 22 with OC, in whom brain metastases were disclosed. RESULTS:In most patients (65.5% of BC patients and 68.2% of patients with OC tumors) BRCA1 protein loss was found. No correlation was disclosed between the levels of ERα, PR receptors, HER2, SDF1, CXCR4, AEG1, BRMS1 and BRCA1 status, patient age, stage of disease advancement, grade of histological maturity of the cells, presence of metastases to lymph nodes. A statistically significant correlation was disclosed between the negative expression of PR receptors and a high expression of CXCR4 in patients with BC. High values of the AEG1 protein (linked to metastases) were detected alongside a high expression of BRMS1 (a suppressor of metastases). CONCLUSIONS:Patients with BC and OC and brain metastases have a frequent loss of BRCA1 expression. The role of ERα, PR, HER2, SDF1, CXCR4, AEG1, BRMS1 in metastatic process needs further studies.

journal_name

Adv Med Sci

journal_title

Advances in medical sciences

authors

Szarszewska M,Markowska A,Jach R,Marszałek A,Filas V,Bednarek W,Olejek A,Tomczak P,Sajdak S,Nowak-Markwitz E,Jaszczyńska-Nowinka K,Stanisławiak-Rudowicz J,Gryboś A,Chudecka-Głaz A,Gryboś M,Adamska K,Ramlau R,Markowska J

doi

10.1016/j.advms.2018.12.007

subject

Has Abstract

pub_date

2019-09-01 00:00:00

pages

235-240

issue

2

eissn

1896-1126

issn

1898-4002

pii

S1896-1126(18)30155-X

journal_volume

64

pub_type

杂志文章,多中心研究

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