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|Ref Type||Journal Article|
|Authors||Hou HA, Lin YC, Kuo YY, Chou WC, Lin CC, Liu CY, Chen CY, Lin LI, Tseng MH, Huang CF, Chiang YC, Liu MC, Liu CW, Tang JL, Yao M, Huang SY, Ko BS, Hsu SC, Wu SJ, Tsay W, Chen YC, Tien HF|
|Title||GATA2 mutations in patients with acute myeloid leukemia-paired samples analyses show that the mutation is unstable during disease evolution.|
|Journal||Annals of hematology|
|Abstract Text||Recently, mutations of the GATA binding protein 2 (GATA2) gene were identified in acute myeloid leukemia (AML) patients with CEBPA double mutations (CEBPA (double-mut)), but the interaction of this mutation with other genetic alterations and its dynamic changes during disease progression remain to be determined. In this study, 14 different missense GATA2 mutations, which were all clustered in the highly conserved N-terminal zinc finger 1 domain, were identified in 27.4, 6.7, and 1 % of patients with CEBPA (double-mut), CEBPA (single-mut), and CEBPA wild type, respectively. All but one patient with GATA2 mutation had concurrent CEBPA mutation. GATA2 mutations were closely associated with younger age, FAB M1 subtype, intermediate-risk cytogenetics, expression of HLA-DR, CD7, CD15, or CD34 on leukemic cells, and CEBPA mutation, but negatively associated with FAB M4 subtype, favorable-risk cytogenetics, and NPM1 mutation. Patients with GATA2 mutation had significantly better overall survival and relapse-free survival than those without GATA2 mutation. Sequential analysis showed that the original GATA2 mutations might be lost during disease progression in GATA2-mutated patients, while novel GATA2 mutations might be acquired at relapse in GATA2-wild patients. In conclusion, AML patients with GATA2 mutations had distinct clinic-biological features and a favorable prognosis. GATA2 mutations might be lost or acquired at disease progression, implying that it was a second hit in the leukemogenesis of AML, especially those with CEBPA mutation.|
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