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Activation of AKT/PKB in breast cancer predicts a worse outcome among endocrine treated patients

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and members of the Southeast Sweden Breast Cancer Group, Pérez-Tenorio, G, Stål, O·2002·British Journal of Cancer

Abstract

Akt/PKB is a serine/threonine protein kinase that regulates cell cycle progression, apoptosis and growth factor mediated cell survival in association with tyrosine kinase receptors. The protein is a downstream effector of erbB-2 with implications in breast cancer progression and drug resistance in vitro. We aimed to examine the role of Akt-1 in breast cancer patients, by determining whether the expression (Akt-1) and/or activation (pAkt) were related to prognostic markers and survival. The expression of erbB-2, heregulin beta 1 and Bcl-2 was also assessed by flow cytometry or immunohistochemistry. This study comprised 93 patients, aged <50 who were treated with tamoxifen and/or goserelin. We found that pAkt was associated with lower S-phase fraction (P=0.001) and the presence of heregulin beta 1-expressing stromal cells (P=0.017). Neither Akt-1 nor pAkt was related with other factors. Tumour cells-derived heregulin beta 1 was found mainly in oestrogen receptor negative (P=0.026) and node negative (P=0.005) cases. Survival analysis revealed that pAkt positive patients were more prone to relapse with distant metastasis, independently of S-phase fraction and nodal status (multivariate analysis; P=0.004). The results suggest that activation of Akt may have prognostic relevance in breast cancer.

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Metadata

Authors
and members of the Southeast Sweden Breast Cancer Group, Pérez-Tenorio, G., & Stål, O.
Venue
British Journal of Cancer
Published
2002-02
Volume
86
Issue
4
Pages
540-545
ISSN
  • 0007-0920 (ISSN-L)
  • 1532-1827
OpenAlex
W2029882446
Cited by
394
References
1
FWCI
8.96
Type
journal article
Language
en
Open access
hybrid

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CoChat. (2026). Citation check: Activation of AKT/PKB in breast cancer predicts a worse outcome among endocrine treated patients. https://app.cochat.ai/papers/10.1038/sj.bjc.6600126
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and members of the Southeast Sweden Breast Cancer Group, Pérez-Tenorio, G., & Stål, O. (2002). Activation of AKT/PKB in breast cancer predicts a worse outcome among endocrine treated patients. British Journal of Cancer. https://doi.org/10.1038/sj.bjc.6600126

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