alexa Prognostic significance of TGFbeta-1 and pSmad2 3 in breast cancer patients with T1-2,N0 tumours.
Oncology

Oncology

Journal of Cancer Science & Therapy

Author(s): Koumoundourou D, Kassimatis T, Zolota V, Tzorakoeleftherakis E, Ravazoula P,

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Abstract BACKGROUND: The transforming growth factor beta (TGFbeta) signaling pathway has been shown to exert divergent effects and to cross-talk with estrogen pathways in mammary gland tumorigenesis. TGF signaling in early stage breast cancer was investigated by examining the expression of TGFbeta-1 and the signaling mediators pSmad2/3 and Smad4. Their association with oestrogen and progesterone receptors, as well as with clinical and pathological features was also analyzed. PATIENTS AND METHODS: Sixty-one tumor specimens from surgically treated patients with primary T12,N0 breast cancer were examined. The expression of TGFbeta-1, pSmad2 and Smad4 was assessed implementing immunohistochemical assays. RESULTS: TGFbeta-I, pSmad2/3 and Smad4 were expressed in 50.9\%, 74.0\% and 61.0\% of specimens, respectively. The degree of expression of the three molecules was significantly associated with each other. Loss of pSmad2/3 expression indicated a shorter disease-free survival in all patients, including those with oestrogen receptor-positive tumors. Patients not expressing TGFbeta-1 were 4.6 times more likely to experience distant recurrence. CONCLUSION: Our results demonstrate that pSmad2/3 and TGFP-1 may be promising novel prognostic markers for T1.2,N0 breast carcinomas.
This article was published in Anticancer Res and referenced in Journal of Cancer Science & Therapy

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