Magda M. Assem

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We have performed immunophenotyping studies on 186 untreated cases of acute lymphoblastic leukemia (ALL) in an Egyptian population, using panels of monoclonal antibodies (mAb) and an avidin-biotin-immunoperoxidase detection system. Sixty-two of these cases were tested with a panel of mAb directed against the T-cell markers CD2, CD4, CD8, B-cell markers(More)
BACKGROUND CD46 is a membrane cofactor protein, which acts as a cofactor for factor I proteolytic cleavage of C3, so it protects the cells expressing it on their surface from autologous complement attack. It has been recently described as a receptor for HHV-6. Also, it has been shown to be highly expressed on malignant cells as compared to normal cells,(More)
Leukemic cells from 46 T ALL cases were studied with a wide panel of mAb reacting with T cells using an immunoperoxidase technique. The cases included 15 adults (16 years or over) and 31 children (less than 16 years). The mAb used in the panel were: CD1, (T6), CD2 (T11, X11, D66, clone 2), CD3 (T3/Leu4), CD4, (T4/Leu3a), CD5 (Leu1, T1, A50, I73D9), CD7(More)
Background: AML blasts of different FAB subsets express specific chemokines and chemokine receptors depending on their degree of maturation which might account for some aspects in their pattern of extramedullary invasion (EMI) and accumulation of leukemic cells. Objectives: We aimed to define the pattern of chemokine MCP1 and chemokine receptors CXCR4 and(More)
Molecular characterization of acute myeloid leukemia (AML) allows prognostic stratification and assessment of the chances of durable treatment response. The presence of FLT3 internal tandem duplication (ITD) mutation as well as the allelic ratio (ITD-AR) and JAK2 V617F mutation may be associated with clinical outcome in patients with AML. FLT3-ITD and JAK2(More)
OBJECTIVES To detect FMS-like tyrosine kinase-3 internal tandem duplicate (FLT3 ITD) mutation, Myeloproliferative leukemia virus oncogene (cMPL) and Ephrin A 4 receptor (EphA4) expressions in Acute myeloid leukemia (AML) and their correlation to patient's clinicopathological characteristics and survival. METHODS RNA was extracted from blood samples of 58(More)
Missense mutations in PIK3CA are common in breast cancers. They mostly involve exons 9 and 20 which encode kinase and helical domains of the protein and may result in its activation. PIK3CA activating mutations were previously shown to predict lower pathologic complete response (pCR) in HER2-positive breast cancer cases undergoing neoadjuvant human(More)
Acute myeloid leukemia (AML) is the most common type of leukemia in adults with the lowest survival rate of all the leukemias. It is a heterogeneous disease in which a variety of cytogenetic and molecular alterations have been identified. Some galectins were previously reported to have important roles in cancer-like neoplastic transformation, tumor cell(More)
Background: In the last decade, it has become clear that change of gene expression may alter the hematopoietic cell quiescent state and consequently play a major role in leukemogenesis. WT1 is known to be a player in acute myeloid leukemia (AML) and FOXP3 has a crucial role in regulating the immune response. Objectives: To evaluate the impact of(More)
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