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Küçükcankurt F, Erbilgin Y, Fırtına S, Hatırnaz Ng Ö, Karakaş Z, Celkan T, Ünüvar A, Özbek U, Sayitoğlu M. PTEN and AKT1 Variations in Childhood T-Cell Acute Lymphoblastic Leukemia. Turk J Haematol 2020; 37:98-103. [PMID: 31744268 PMCID: PMC7236415 DOI: 10.4274/tjh.galenos.2019.2019.0282] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
Objective: PTEN/AKT pathway deregulations have been reported to be associated with treatment response in acute leukemia. This study examined pediatric T-cell acute lymphoblastic leukemia (T-ALL) samples for PTEN and AKT1 gene variations and evaluated the clinical findings. Materials and Methods: Fifty diagnostic bone marrow samples of childhood T-ALL cases were investigated for the hotspot regions of the PTEN and AKT1 genes by targeted next-generation sequencing. Results: A total of five PTEN variations were found in three of the 50 T-ALL cases (6%). Three of the PTEN variations were first reported in this study. Furthermore, one patient clearly had two different mutant clones for PTEN. Two intronic single-nucleotide variations were found in AKT1 and none of the patients carried pathogenic AKT1 variations. Conclusion: Targeted deep sequencing allowed us to detect both low-level variations and clonal diversity. Low-level PTEN/AKT1 variation frequency makes it harder to investigate the clinical associations of the variants. On the other hand, characterization of the PTEN/AKT signaling members is important for improving case-specific therapeutic strategies.
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Affiliation(s)
- Fulya Küçükcankurt
- İstanbul University, Aziz Sancar Institute of Experimental Medicine, Department of Genetics, İstanbul, Turkey,Altınbaş University Faculty of Medicine, İstanbul, Turkey,F.K. and Y.E. contributed equally to this work
| | - Yücel Erbilgin
- İstanbul University, Aziz Sancar Institute of Experimental Medicine, Department of Genetics, İstanbul, Turkey,F.K. and Y.E. contributed equally to this work
| | - Sinem Fırtına
- İstanbul University, Aziz Sancar Institute of Experimental Medicine, Department of Genetics, İstanbul, Turkey,İstinye University Faculty of Art and Science, Department of Molecular Biology and Genetics, İstanbul, Turkey
| | - Özden Hatırnaz Ng
- İstanbul University, Aziz Sancar Institute of Experimental Medicine, Department of Genetics, İstanbul, Turkey,Acıbadem Mehmet Ali Aydınlar University Faculty of Medicine, Department of Medical Biology, İstanbul, Turkey
| | - Zeynep Karakaş
- İstanbul University Faculty of Medicine, Department of Pediatrics Hematology, İstanbul, Turkey
| | - Tiraje Celkan
- İstanbul University-Cerrahpaşa Cerrahpaşa Faculty of Medicine, Department of Pediatric Hematology, İstanbul, Turkey
| | - Ayşegül Ünüvar
- İstanbul University Faculty of Medicine, Department of Pediatrics Hematology, İstanbul, Turkey
| | - Uğur Özbek
- İstanbul University, Aziz Sancar Institute of Experimental Medicine, Department of Genetics, İstanbul, Turkey,Acıbadem Mehmet Ali Aydınlar University Faculty of Medicine, Department of Medical Genetics, İstanbul, Turkey
| | - Müge Sayitoğlu
- İstanbul University, Aziz Sancar Institute of Experimental Medicine, Department of Genetics, İstanbul, Turkey
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