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    The Diagnostic Value of circFBXW7, circABCB10, and circ0103552 Levels in Breast Cancer
    (MDPI, ST ALBAN-ANLAGE 66, CH-4052 BASEL, SWITZERLAND, 2024) İlhan, Burak; Ender, Şenol; Kılıç, Berkay; Üçüncü, Muhammed; Serilmez, Murat; Yasasever, Ceren Tilgen; Soydinç, Hilal Oğuz; Kuras, Sibel; Erdoğan, Bekir; Alsaadoni, Hani; Karanlık, Hasan; Bademler, Süleyman
    Despite advances in cancer treatment, breast cancer (BC) remains one of the most common cancers affecting women worldwide. This study aimed to determine serum circFBXW7, circABCB10, and circ0103552 levels and compare BC patients and healthy controls to investigate their roles in the molecular mechanism of BC and the significance of these circRNAs in BC diagnosis. The study group consisted of 92 patients with BC and 31 healthy controls. Total RNA was isolated from serum samples. Following total RNA, complementary DNA was synthesized from this material. Following complementary DNA analysis, the circRNA levels were analyzed by the qRT-PCR method. Expression levels were evaluated in ∆Ct values. High ∆Ct values of circFBXW7 and circ0103552 and low ∆Ct values of circABCB10 were correlated with BC diagnosis (circFBXW7, p = 0.043, r = 0.183, circ0103552, p < 0.001, r = 0.321, circABCB10, p = 0.001, r = −0.291). According to Fold Change (FC) values, circFBXW7 (FC = 0.30) and circ0103552 (FC = 0.26) showed low expression in the patient group compared to the control group, while circABCB10 (FC = 11.09) showed high expression (p < 0.05, for all comparisons). We think that our study is one of the rare studies investigating the relationship between BC and serum circRNA levels. This study concludes that the significant downregulation of circFBXW7 and circ0103552 and the upregulation of circABCB10 are directly related to the diagnosis of BC and can be used for diagnosis, but further studies are needed to elucidate the molecular mechanism of the relationship between circRNAs and BC.