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ARGADAL, ÖMER GÖKAY

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ARGADAL

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ÖMER GÖKAY

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    Publication
    Coexistence of TERT C228T mutation and MALAT1 dysregulation in primary glioblastoma: new prognostic and therapeutic targets
    (Taylor & Francis, 2021-06-21) Ak Aksoy, Seçil; Mutlu, Melis; Tunca, Berrin; Kocaeli, Hasan; Taşkapılıoğlu, Mevlüt Özgür; Bekar, Ahmet; Tekin, Çağla; Arğadal, Ömer Gökay; Civan, Muhammet Nafi; Kaya, İsmail Seçkin; Ocak, Pınar Eser; Tolunay, Şahsine; AKSOY, SEÇİL; Mutlu, Melis; TUNCA, BERRİN; KOCAELİ, HASAN; TAŞKAPILIOĞLU, MEVLÜT ÖZGÜR; BEKAR, AHMET; Tekin, Çağla; ARGADAL, ÖMER GÖKAY; Civan, Muhammet Nafi; KAYA, İSMAİL SEÇKİN; OCAK, PINAR; TOLUNAY, ŞAHSİNE; Bursa Uludağ Üniversitesi/İnegöl Meslek Yüksekokulu.; Bursa Uludağ Üniversitesi/Tıp Fakültesi/Tıbbi Biyoloji Anabilim Dalı.; Bursa Uludağ Üniversitesi/Tıp Fakültesi/Beyin Cerrahi Anabilim Dalı.; Bursa Uludağ Üniversitesi/Tıp Fakültesi/Patoloji Anabilim Dalı.; 0000-0002-1619-6680; 0000-0001-5472-9065; 0000-0003-0132-9927; 0000-0002-5126-1548; ADM-8457-2022; ABX-9081-2022; AAI-2073-2021; FPB-0403-2022; ABI-6078-2020; FDK-3229-2022; AAW-5254-2020; GDC-6329-2022; CCA-2925-2022; HKP-0793-2023; ILC-4543-2023; AAI-1612-2021
    Objective: This study was designed to conduct molecular classification based on IDH1/2, TERT, ATRX, and DAXX changes in pediatric and adult primary glioblastoma (GB) and to analyze the potential interaction of LncRNA MALAT1 in the determined homogeneous subgroups. Methods: We analyzed the expression profiles of ATRX/DAXX and MALAT1 using the qRT-PCR method and IDH and TERT mutation status using DNA sequencing analysis in 85 primary pediatric and adult GB patients. Results: IDH1 mutation was observed in 5 (5.88%) and TERT mutation in 65 (76.47%) primary pediatric and adult GB patients. ATRX and DAXX were detected in 18 (21.18%) and 7 (8.24%) patients. TERT mutation and loss of ATRX/DAXX were associated with short overall survival (p < 0.001, p < 0.001, respectively). Patients carrying especially TERT C228T mutation had worse prognosis (p < 0.001). Six subgroups were obtained from the genetic analysis. Among the subgroups, MALAT1 was highly expressed in group A that had a single TERT mutation as compared to that in groups D and E (p = 0.001 and p < 0.001, respectively); further, high MALAT1 expression was associated with worse prognosis in patients with C228T mutation (p < 0.001). Conclusions: Our findings highlight that the presence of TERT C228T mutation and expression of MALAT1 can be used as primary targets during the follow-up of primary GB patients and in the development of new treatment strategies.