RGD Reference Report - Annexins in human breast cancer: Possible predictors of pathological response to neoadjuvant chemotherapy. - Rat Genome Database

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Annexins in human breast cancer: Possible predictors of pathological response to neoadjuvant chemotherapy.

Authors: Chuthapisith, S  Bean, BE  Cowley, G  Eremin, JM  Samphao, S  Layfield, R  Kerr, ID  Wiseman, J  El-Sheemy, M  Sreenivasan, T  Eremin, O 
Citation: Chuthapisith S, etal., Eur J Cancer. 2009 May;45(7):1274-81. doi: 10.1016/j.ejca.2008.12.026. Epub 2009 Jan 24.
RGD ID: 7421560
Pubmed: PMID:19171478   (View Abstract at PubMed)
DOI: DOI:10.1016/j.ejca.2008.12.026   (Journal Full-text)

Neoadjuvant chemotherapy is used in women who have large or locally advanced breast cancers. However, up to 70% of women who receive neoadjuvant chemotherapy fail to achieve a complete pathological response in their primary tumour (a surrogate marker of long-term survival). Five proteins, previously identified to be linked with chemoresistance in our in vitro experiments, were identified histochemically in pre-treatment core needle biopsies from 40 women with large or locally advanced breast cancers. Immunohistochemical staining with the five proteins showed no single protein to be a predictor of response to chemotherapy. However, pre-treatment breast cancer specimens that were annexin-A2 positive but annexin-A1 negative correlated with a poor pathological response (p=0.04, Fisher's exact test). The mechanisms by which annexins confer chemoresistance have not been identified, but may be due to inhibition of apoptosis. Annexin-A1 has been shown to enhance apoptosis, whilst annexin-A2, by contrast, inhibits apoptosis.

RGD Manual Disease Annotations    Click to see Annotation Detail View
TermQualifierEvidenceWithReferenceNotesSourceOriginal Reference(s)
invasive ductal carcinoma treatmentIEP 7421560; 7421560 RGD 
invasive ductal carcinoma treatmentISOANXA1 (Homo sapiens)7421560; 7421560 RGD 
invasive ductal carcinoma treatmentISOANXA2 (Homo sapiens)7421560; 7421560 RGD 

Objects Annotated

Genes (Rattus norvegicus)
Anxa1  (annexin A1)
Anxa2  (annexin A2)

Genes (Mus musculus)
Anxa1  (annexin A1)
Anxa2  (annexin A2)

Genes (Homo sapiens)
ANXA1  (annexin A1)
ANXA2  (annexin A2)


Additional Information