Ori Ben - Yehuda

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During the last decade the frequency of therapy-related acute leukemia (t-leuk) and myelodysplastic syndrome (t-MDS) has been increasingly observed. Over the past 15 years, we treated 56 patients with t-leuk who had received prior chemotherapy (39%), radiotherapy (11%), or both (45%). The drugs received included alkylating agents and topoisomerase II(More)
Cytogenetic analysis of bone marrow cells performed at the time of diagnosis of ALL in an 80-year-old male patient revealed two unrelated abnormal clones. One included the 9;22 translocation (Philadelphia chromosome) as the sole aberration and the second was missing the Y chromosome. The significance of this finding in the light of the role of -Y clone in(More)
PURPOSE Donor lymphocyte infusion (DLI) was used to reverse relapse after allogeneic bone marrow transplantation (BMT) in a patient with beta-thalassemia major. PATIENTS AND METHODS The patient with unstable mixed chimerism after BMT was treated with graded increments of donor lymphocytes (10(5) T cells/kg to 5 x 10(7) T cells/kg) to displace residual(More)
A marker chromosome was identified in leukemic cells on an AML patient. The G-banding pattern resembled on i(10q), but its centromeric position was not clear; in some cells it had a telocentric shape, in others a metacentric or acentric shape. The origin of the marker chromosome was confirmed by FISH, using chromosome-10-specific painting. To determine the(More)
Thirteen chronic myeloid leukemia (CML) patients, 10 with variant Philadelphia (Ph) translocations and 3 Ph negative cases, were analyzed by fluorescence in situ hybridization (FISH) with the use of BCR and ABL cosmid probes and a chromosome 22 painting probe. In the variant Ph translocations, the BCR-ABL fusion gene was located on the Ph chromosome; in 1(More)
A large family with three children affected with the autosomal recessive disease of Cerebrotendinous Xanthomatosis (CTX) was studied for class I (HLA-A,B,C) and class II antigens (HLA-DR,D,SB), properdin factor B and glyoxalase. The extensive typing revealed an informative cross-over between HLA-B and Bf, indicating that Bf is located centromeric to the(More)
We describe two women; one (patient 1) with the diagnosis of acute myeloblastic leukemia (AML), the second (patient 2) with myelodysplastic syndrome (MDS). Both patients underwent allogeneic bone marrow transplantation (BMT), from their HLA-matched brothers. Cytogenetic analysis after the BMT revealed a chromosomal mosaicism in both patients, with the(More)
We investigated leukemic cells from a patient with chronic myelocytic leukemia (CML) and a normal 46,XX karyotype. Molecular studies revealed rearrangement of the M-bcr region and formation of BCR/ABL fusion mRNA with b3a2 configuration. Fluorescence in situ hybridization (FISH) using the abl probe showed signal on both chromosomes 9 band q34, while the bcr(More)
Coronary artery disease (CAD) and peripheral arterial disease (PAD) are different manifestations of atherosclerosis but frequently coexist. Previous studies have identified subjects with PAD as a high-risk subgroup with increased adverse events after elective percutaneous coronary intervention (PCI). PAD has also been associated with increased rates of(More)
We describe a 58-year-old woman with anaplastic multiple myeloma and multiple chromosomal abnormalities. Her karyotype showed extreme hyperploidy with 77 chromosomes. Some of the aberrations were typical of multiple myeloma (+3, +5, +15, +19, +21, t(11;14)(q13;q32)), others were characteristic of the aggressive anaplastic myeloma (+8), t(11;14)(q13;q32),(More)