A subset of breast cancer predisposes to brain metastasis

This study evaluated the expression of biological markers of breast cancers with brain metastases. Eighteen paired tumors were assessed, with 42 non-brain-metastasizing breast cancers that were stained with ER, PR, HER2, CK5/6, p63, and Ki67, and were also classified into intrinsic subtypes. The exp...

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Veröffentlicht in:Medical molecular morphology 2011-03, Vol.44 (1), p.15-20
Hauptverfasser: Shao, Mu-min, Liu, Jun, Vong, Joaquim S., Niu, Yun, Germin, Barbara, Tang, Ping, Chan, Anthony W.H., Lui, Philip C.W., Law, Bonita K.B., Tan, Puay-Hoon, Tse, Gary M.
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container_issue 1
container_start_page 15
container_title Medical molecular morphology
container_volume 44
creator Shao, Mu-min
Liu, Jun
Vong, Joaquim S.
Niu, Yun
Germin, Barbara
Tang, Ping
Chan, Anthony W.H.
Lui, Philip C.W.
Law, Bonita K.B.
Tan, Puay-Hoon
Tse, Gary M.
description This study evaluated the expression of biological markers of breast cancers with brain metastases. Eighteen paired tumors were assessed, with 42 non-brain-metastasizing breast cancers that were stained with ER, PR, HER2, CK5/6, p63, and Ki67, and were also classified into intrinsic subtypes. The expression patterns between the breast tumors with brain metastases were compared to the brain metastases and the controls. Breast cancers with brain metastases were of higher grade and showed higher incidence of lymph node metastases at initial diagnosis and higher EGFR, p63, and Ki67 expression. In the group of breast cancers with brain metastases, the brain metastases showed higher HER2, CK5/6, and Ki67 expression compared to the breast primaries. There was also a higher incidence of basal subtype and a lower incidence of luminal subtype. When tumors metastasized, changes in hormonal receptor (22%) and HER2 (6%) status were observed. We concluded that breast cancers with higher grade, lymph node involvement at diagnosis, high EGFR, p63, and Ki67 expression, and of basal subtype were at higher risk for brain metastases, and that both hormonal receptors and HER2 status may change in brain metastases.
doi_str_mv 10.1007/s00795-010-0495-2
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Eighteen paired tumors were assessed, with 42 non-brain-metastasizing breast cancers that were stained with ER, PR, HER2, CK5/6, p63, and Ki67, and were also classified into intrinsic subtypes. The expression patterns between the breast tumors with brain metastases were compared to the brain metastases and the controls. Breast cancers with brain metastases were of higher grade and showed higher incidence of lymph node metastases at initial diagnosis and higher EGFR, p63, and Ki67 expression. In the group of breast cancers with brain metastases, the brain metastases showed higher HER2, CK5/6, and Ki67 expression compared to the breast primaries. There was also a higher incidence of basal subtype and a lower incidence of luminal subtype. When tumors metastasized, changes in hormonal receptor (22%) and HER2 (6%) status were observed. 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Eighteen paired tumors were assessed, with 42 non-brain-metastasizing breast cancers that were stained with ER, PR, HER2, CK5/6, p63, and Ki67, and were also classified into intrinsic subtypes. The expression patterns between the breast tumors with brain metastases were compared to the brain metastases and the controls. Breast cancers with brain metastases were of higher grade and showed higher incidence of lymph node metastases at initial diagnosis and higher EGFR, p63, and Ki67 expression. In the group of breast cancers with brain metastases, the brain metastases showed higher HER2, CK5/6, and Ki67 expression compared to the breast primaries. There was also a higher incidence of basal subtype and a lower incidence of luminal subtype. When tumors metastasized, changes in hormonal receptor (22%) and HER2 (6%) status were observed. We concluded that breast cancers with higher grade, lymph node involvement at diagnosis, high EGFR, p63, and Ki67 expression, and of basal subtype were at higher risk for brain metastases, and that both hormonal receptors and HER2 status may change in brain metastases.</abstract><cop>Japan</cop><pub>Springer Japan</pub><pmid>21424932</pmid><doi>10.1007/s00795-010-0495-2</doi><tpages>6</tpages></addata></record>
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subjects Adenocarcinoma, Mucinous - metabolism
Adenocarcinoma, Mucinous - secondary
Adult
Aged
Anatomy
Biomarkers, Tumor - metabolism
Brain
Brain Neoplasms - metabolism
Brain Neoplasms - secondary
Breast cancer
Breast Neoplasms - metabolism
Breast Neoplasms - pathology
Carcinoma, Ductal, Breast - metabolism
Carcinoma, Ductal, Breast - secondary
Carcinoma, Lobular - metabolism
Carcinoma, Lobular - secondary
Female
Humans
Keratin-5 - metabolism
Keratin-6 - metabolism
Ki-67 Antigen - metabolism
Lymphatic Metastasis
Medicine
Medicine & Public Health
Membrane Proteins - metabolism
Metastasis
Middle Aged
Molecular Medicine
Original Paper
Pathology
Receptor, Epidermal Growth Factor - metabolism
Receptor, ErbB-2 - metabolism
Receptors, Estrogen - metabolism
Receptors, Progesterone - metabolism
title A subset of breast cancer predisposes to brain metastasis
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