BACKGROUND - Apolipoprotein E (ApoE) is a potential inhibitor of cell proliferation, immune regulation and modulation of cell growth and differentiation; it also has a substantial role in antioxidant activity. ApoE has a potential role in prostate cancer progression.
MATERIALS AND METHODS - ApoE genotyping was performed using real-time polymerase chain reaction (RT-PCR) for blood samples from a group of patients with prostate cancer (n=68) and a control group (n=78).
RESULTS - The frequency of the E3/E3 genotype was significantly higher in patients compared to controls (p=0. 004). E3/E3 genotype carriers were 3. 6-fold more likely to be patients than controls (odds ratio=3. 67, 95% confidence interval=1. 451-9. 155; p=0. 004). Additionally, the patients with E3/E3 genotype had significantly higher Gleason score (p=0. 017), and more patients with this genotype had a Gleason score higher than 7 (p=0. 007). Individuals carrying the E4 allele were significantly more common in the control group (p=0. 006). The frequency of the E3/E4 genotype was found to be significantly higher in controls compared to patients (p=0. 007), and patients were significantly less likely to have this genotype than controls (odds ratio=0. 89, 95% confidence interval=0. 833-0. 967, p=0. 007). Individuals carrying the E2/E3 genotype had a significantly lower Gleason score (p=0. 049)-all of the patients with this genotype had a Gleason score lower than 7 (p=0. 024).
CONCLUSIONS - E3/E3 genotype may be a potential risk factor for prostate cancer and high Gleason scoring. The E4 allele maybe a risk-reducing factor for prostate cancer.
Anticancer research. 2016 Feb [Epub]
Faruk Yencilek, Seda Gulec Yilmaz, Asif Yildirim, Uzay Gormus, Emre Murat Altinkilic, Altay Burak Dalan, Yavuz Bastug, Selda Turkmen, Sadi Turkan, Turgay Isbir
Department of Urology, Faculty of Medicine, Institute of Health Sciences, Yeditepe University, Istanbul, Turkey. , Department of Molecular Medicine, Institute of Health Sciences, Yeditepe University, Istanbul, Turkey. , Department of Urology, Göztepe Education and Research Hospital, Istanbul, Turkey. , Department of Biochemistry, Faculty of Medicine, Istanbul Bilim University, Istanbul, Turkey. , Department of Molecular Medicine, Institute of Health Sciences, Yeditepe University, Istanbul, Turkey. , Yeditepe University Hospital, Istanbul, Turkey. , Department of Urology, Fatih Sultan Mehmet Education and Research Hospital, Istanbul, Turkey. , Department of Molecular Medicine, Institute of Health Sciences, Yeditepe University, Istanbul, Turkey. , Department of Urology, Anatolia Hospital, Kastamonu, Turkey. , Department of Medical Biology, Faculty of Medicine, Institute of Health Sciences, Yeditepe University, Istanbul, Turkey.