A novel HER2-positive breast cancer phenotype arising from germline TP53 mutations
A novel HER2-positive breast cancer phenotype arising from germline TP53 mutations
Introduction The Li–Fraumeni Syndrome is caused by a germline TP53 mutation and is associated with a high risk of breast cancer at young ages. Basal (triple negative) breast cancers are now well recognised to be a typical sub-type of breast cancer developing in a large proportion of BRCA1 gene carriers. We considered whether a similar narrow sub-type of breast cancer was found in TP53 gene mutation carriers.
Objective A hypothesis generating study to investigate whether there are specific breast tumour characteristics associated with germline TP53 mutations.
Methods Pathological characteristics in 12 breast cancers arising in nine patients carrying pathogenic TP53 mutations were compared to a reference panel of 231 young onset breast tumours included in the POSH study.
Results Patients carrying a TP53 mutation showed a significantly higher likelihood of developing a breast cancer with Human Epidermal growth factor Receptor (HER2) amplification (83%) when compared to the cohort of young onset breast cancer cases (16%); ER and PR status were equivalent between groups.
Conclusion These findings suggest that breast cancer developing on a background of an inherited TP53 mutation is highly likely to present with amplification of HER2.
771-774
Wilson, J.R.F.
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Bateman, A.C.
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Hanson, H.
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An, Q.
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Evans, G.
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Rahman, N.
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Jones, L.J.
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Eccles, D.M.
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November 2010
Wilson, J.R.F.
17edc831-0cba-45cd-bd8f-6a43793cd93c
Bateman, A.C.
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Hanson, H.
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An, Q.
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Evans, G.
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Rahman, N.
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Jones, L.J.
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Eccles, D.M.
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Wilson, J.R.F., Bateman, A.C., Hanson, H., An, Q., Evans, G., Rahman, N., Jones, L.J. and Eccles, D.M.
(2010)
A novel HER2-positive breast cancer phenotype arising from germline TP53 mutations.
Journal of Medical Genetics, 47 (11), .
(doi:10.1136/jmg.2010.078113).
Abstract
Introduction The Li–Fraumeni Syndrome is caused by a germline TP53 mutation and is associated with a high risk of breast cancer at young ages. Basal (triple negative) breast cancers are now well recognised to be a typical sub-type of breast cancer developing in a large proportion of BRCA1 gene carriers. We considered whether a similar narrow sub-type of breast cancer was found in TP53 gene mutation carriers.
Objective A hypothesis generating study to investigate whether there are specific breast tumour characteristics associated with germline TP53 mutations.
Methods Pathological characteristics in 12 breast cancers arising in nine patients carrying pathogenic TP53 mutations were compared to a reference panel of 231 young onset breast tumours included in the POSH study.
Results Patients carrying a TP53 mutation showed a significantly higher likelihood of developing a breast cancer with Human Epidermal growth factor Receptor (HER2) amplification (83%) when compared to the cohort of young onset breast cancer cases (16%); ER and PR status were equivalent between groups.
Conclusion These findings suggest that breast cancer developing on a background of an inherited TP53 mutation is highly likely to present with amplification of HER2.
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Published date: November 2010
Organisations:
Cancer Sciences, Clinical Trials Unit
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Local EPrints ID: 149083
URI: http://eprints.soton.ac.uk/id/eprint/149083
ISSN: 0022-2593
PURE UUID: 58180a78-9514-47b5-80a3-f7abc020c41e
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Date deposited: 30 Apr 2010 08:36
Last modified: 14 Mar 2024 02:34
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Contributors
Author:
J.R.F. Wilson
Author:
A.C. Bateman
Author:
H. Hanson
Author:
Q. An
Author:
G. Evans
Author:
N. Rahman
Author:
L.J. Jones
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