Phe354Leu polymorphism of the liver kinase B1 gene as a prognostic factor in adult egyptian patients with acute myeloid leukemia.

Autor:	Hussein OA; Department of Clinical Pathology, Faculty of Medicine, Zagazig University, Egypt., Labib HA; Department of Clinical Pathology, Faculty of Medicine, Zagazig University, Egypt., Haggag R; Department of Medical Oncology, Faculty of Medicine, Zagazig University, Egypt., Hamed Sakr MM; Department of Clinical Pathology, Faculty of Medicine, Zagazig University, Egypt.
Jazyk:	angličtina
Zdroj:	Heliyon [Heliyon] 2023 May 03; Vol. 9 (5), pp. e15415. Date of Electronic Publication: 2023 May 03 (Print Publication: 2023).
DOI:	10.1016/j.heliyon.2023.e15415
Abstrakt:	Background: The human liver kinase B1 ( LKB1 ) gene is a significant tumor suppressor widely expressed in all fetal and adult tissues. Despite its established role in solid tumors, the biological and clinical implications of LKB1 gene alterations in hematological malignancies have not been sufficiently recognized. Aim: This study aimed to determine the frequency of the LKB1 Phe354Leu polymorphism in adult Egyptian patients with cytogenetically normal AML ( C N-AML), evaluate its clinical prognostic significance, and investigate its effect on the therapeutic outcome and patient survival. Methods: Direct sequencing of amplified exon eight of the LKB1 gene was performed to detect the Phe354Leu polymorphism in 72 adult de novo C N-AML patients. Results: The LKB1 Phe354Leu polymorphism was detected in 16.7% of patients and associated with younger age and lower hemoglobin levels (p < 0.001). Patients in the mutated group had significantly higher total leukocytic count and bone marrow blasts (p = 0.001 and p < 0.001, respectively). The most common FAB subtypes in mutated patients were M4 and M2. The relapse rate was significantly higher in the mutated group (p = 0.004). There was a significant association between the FLT3-ITD polymorphism and LKB1 F354L (p < 0.001). The mutated group had shorter overall survival (p = 0.003). In multivariate analysis, the Phe354Leu polymorphism was a significant independent prognostic variable for the overall and disease-free survival of the studied patients (p = 0.049). Conclusion: The LKB1 Phe354Leu polymorphism was diagnosed at younger ages in Egyptian C N-AML patients and represented a poor independent prognostic factor in C N-AML. Patients who carried this polymorphism had shorter overall survival and more frequent relapses. Our findings may provide insight into the design of therapeutic targets, and molecular testing of the LKB1 gene is recommended for proper risk stratification of C N-AML patients. Competing Interests: The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. (© 2023 Published by Elsevier Ltd.)
Databáze:	MEDLINE
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