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  • Title: Prognostic Significance of TMPRSS2-ERG Fusion Gene in Prostate Cancer.
    Author: Kulda V, Topolcan O, Kucera R, Kripnerova M, Srbecka K, Hora M, Hes O, Klecka J, Babuska V, Rousarova M, Benson V, Pesta M.
    Journal: Anticancer Res; 2016 Sep; 36(9):4787-93. PubMed ID: 27630329.
    Abstract:
    BACKGROUND/AIM: Current research of prostate cancer (PCa) offers a promising way of identifying patients with adverse prognosis who do benefit from radical treatment that can affect quality of life as resections are associated with numerous side-effects. The aim of our study was to evaluate the relationship of TMPRSS2-ERG fusion gene status, tumor tissue prostate-specific antigen (PSA), prostate cancer antigen 3 (PCA3), miR-23b, miR-26a and miR-221 expression levels in combination with preoperative serum PSA level to the risk of PCa recurrence after radical prostatectomy. PATIENTS AND METHODS: The study group consisted of 108 patients who underwent radical prostatectomy. PSA was measured in peripheral blood collected preoperativelly. The expression of TMPRSS2-ERG transcript and the expression of miR-23b, miR-26a and miR-221 in formalin-fixed, paraffin-embedded (FFPE) tumor tissues was analyzed by reverse transcription (RT) real-time polymerase chain reaction (PCR). RESULTS: Significantly shorter time to recurrence was observed in patients with high expression of TMPRSS2-ERG (p=0.0020). High levels of preoperative PSA (>10.0 ng/ml) proved to be marker of shorter time to recurrence (p=0.0153). The most promising marker of the risk of recurrence after radical prostatectomy was a combination of high level of preoperative serum PSA and high expression of TMPRSS2-ERG fusion transcript in tumor tissue (p=0.0001). CONCLUSION: A combination of high preoperative serum PSA and high expression of TMPRSS2-ERG could be promising in distinguishing those tumors that are aggressive and life-threatening.
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