Published in:
Open Access
01-12-2014 | Primary research
Clinical and laboratory features of seven patients with acute myeloid leukemia (AML)-M2/M3 and elevated myeloblasts and abnormal promyelocytes
Authors:
GanLin He, ChunYan Wang, QingEn Li, Huo Tan, FuXiong Chen, ZhenQian Huang, BaoDan Yu, LiXia Zheng, RunHui Zheng, Dan Liu
Published in:
Cancer Cell International
|
Issue 1/2014
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Abstract
Background
There is limited information on a special subtype of Acute myeloid leukemia (AML) characterized by >20% myeloblasts and >20% abnormal promyelocytes in bone marrow and peripheral blood.
Objective
The objective of the present investigation was to explore the clinical and laboratory features of seven patients with AML-M2/M3.
Method
We retrospectively assessed cell morphology, cytochemistry, immunophenotype, cytogenetics, and clinical features of seven patients with this rare subtype of AML.
Results
All seven cases had thrombocytopenia, coagulation abnormalities, >20% myeloblasts and abnormal promyelocytes. The PML/RARα fusion gene was present in six patients and two patients presented a mixed PML/RARα and AML1/ETO genotype. Five cases achieved CR and two cases did not achieve remission and one case transform into AML-M2 after CR1.
Conclusions
The clinical and laboratory features of seven patients with AML-M2/M3 are demonstrated in the present study, providing information on the FAB sub-classification.