Differences in genetic changes between multiple myeloma and plasma cell leukemia demonstrated by comparative genomic hybridization. 2001

N C Gutiérrez, and J M Hernández, and J L García, and M C Cañizo, and M González, and J Hernández, and M B González, and M A Garciá-Marcos, and J F San Miguel
Servicio de Hematología, Hospital Universitario de Salamanca, Spain.

To analyze the genomic differences between multiple myeloma (MM) and plasma cell leukemia (PCL), a total of 30 cases were studied by comparative genomic hybridization (CGH). In five cases with a low proportion of plasma cells (PC) in bone marrow, an enrichment of PC was performed by using immunomagnetic beads conjugated with the monoclonal antibody B-B4. In 24 out of the 25 MM (96%) and in all five PCL (100%) patients DNA copy number changes were identified by CGH analysis; in the MM case without chromosomal imbalances, the immunomagnetic enrichment of PC had failed. The most recurrent changes in MM patients were gains at chromosomes 15q (48%), 11q (44%), 3q (40%), 9q (40%) and 1q (36%). By contrast, all PCL patients showed gains in 1q. Losses of chromosomal material were significantly more frequent in PCL than in MM patients (P = 0.03): losses on 13q in 80% of PCL vs 28% of MM; and on chromosome 16 in 80% vs 12%, respectively. In addition, PCL patients showed losses of 2q and 6p that were not present in MM. The CGH data show differences in chromosomal imbalances between MM and PCL.

UI MeSH Term Description Entries
D007952 Leukemia, Plasma Cell A rare, aggressive variant of MULTIPLE MYELOMA characterized by the circulation of excessive PLASMA CELLS in the peripheral blood. It can be a primary manifestation of multiple myeloma or develop as a terminal complication during the disease. Leukemia, Plasmacytic,Plasma Cell Leukemia,Plasmacytic Leukemia,Leukemias, Plasma Cell,Leukemias, Plasmacytic,Plasma Cell Leukemias,Plasmacytic Leukemias
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D009101 Multiple Myeloma A malignancy of mature PLASMA CELLS engaging in monoclonal immunoglobulin production. It is characterized by hyperglobulinemia, excess Bence-Jones proteins (free monoclonal IMMUNOGLOBULIN LIGHT CHAINS) in the urine, skeletal destruction, bone pain, and fractures. Other features include ANEMIA; HYPERCALCEMIA; and RENAL INSUFFICIENCY. Myeloma, Plasma-Cell,Kahler Disease,Myeloma, Multiple,Myeloma-Multiple,Myelomatosis,Plasma Cell Myeloma,Cell Myeloma, Plasma,Cell Myelomas, Plasma,Disease, Kahler,Multiple Myelomas,Myeloma Multiple,Myeloma, Plasma Cell,Myeloma-Multiples,Myelomas, Multiple,Myelomas, Plasma Cell,Myelomas, Plasma-Cell,Myelomatoses,Plasma Cell Myelomas,Plasma-Cell Myeloma,Plasma-Cell Myelomas
D002869 Chromosome Aberrations Abnormal number or structure of chromosomes. Chromosome aberrations may result in CHROMOSOME DISORDERS. Autosome Abnormalities,Cytogenetic Aberrations,Abnormalities, Autosome,Abnormalities, Chromosomal,Abnormalities, Chromosome,Chromosomal Aberrations,Chromosome Abnormalities,Cytogenetic Abnormalities,Aberration, Chromosomal,Aberration, Chromosome,Aberration, Cytogenetic,Aberrations, Chromosomal,Aberrations, Chromosome,Aberrations, Cytogenetic,Abnormalities, Cytogenetic,Abnormality, Autosome,Abnormality, Chromosomal,Abnormality, Chromosome,Abnormality, Cytogenetic,Autosome Abnormality,Chromosomal Aberration,Chromosomal Abnormalities,Chromosomal Abnormality,Chromosome Aberration,Chromosome Abnormality,Cytogenetic Aberration,Cytogenetic Abnormality
D002871 Chromosome Banding Staining of bands, or chromosome segments, allowing the precise identification of individual chromosomes or parts of chromosomes. Applications include the determination of chromosome rearrangements in malformation syndromes and cancer, the chemistry of chromosome segments, chromosome changes during evolution, and, in conjunction with cell hybridization studies, chromosome mapping. Banding, Chromosome,Bandings, Chromosome,Chromosome Bandings
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000368 Aged A person 65 years of age or older. For a person older than 79 years, AGED, 80 AND OVER is available. Elderly
D000369 Aged, 80 and over Persons 80 years of age and older. Oldest Old
D020732 Cytogenetic Analysis Examination of CHROMOSOMES to diagnose, classify, screen for, or manage genetic diseases and abnormalities. Following preparation of the sample, KARYOTYPING is performed and/or the specific chromosomes are analyzed. Cytogenetic Techniques,Molecular Cytogenetic Techniques,Cytogenetic Technics,Molecular Cytogenetic Technics,Analyses, Cytogenetic,Analysis, Cytogenetic,Cytogenetic Analyses,Cytogenetic Technic,Cytogenetic Technic, Molecular,Cytogenetic Technics, Molecular,Cytogenetic Technique,Cytogenetic Technique, Molecular,Cytogenetic Techniques, Molecular,Molecular Cytogenetic Technic,Molecular Cytogenetic Technique,Technic, Cytogenetic,Technic, Molecular Cytogenetic,Technics, Cytogenetic,Technics, Molecular Cytogenetic,Technique, Cytogenetic,Technique, Molecular Cytogenetic,Techniques, Cytogenetic,Techniques, Molecular Cytogenetic

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