PMID- 12060120 OWN - NLM STAT- MEDLINE DCOM- 20020910 LR - 20190705 IS - 0007-1048 (Print) IS - 0007-1048 (Linking) VI - 117 IP - 4 DP - 2002 Jun TI - Chromosomal aberrations are shared by malignant plasma cells and a small fraction of circulating CD19+ cells in patients with myeloma and monoclonal gammopathy of undetermined significance. PG - 852-9 AB - In the present study, we aimed to identify distinct structural and numerical chromosomal aberrations in peripheral blood B cells of patients with myeloma and monoclonal gammopathy of undetermined significance (MGUS), which reflect changes thought to occur at different stages of the disease process. Peripheral blood from 12 patients with multiple myeloma and three patients with MGUS was investigated for the occurrence of retinoblastoma-1 gene deletions, p53 gene deletions and numerical aberrations demonstrated previously to be present in the patients' bone marrow CD138+ cells. By combining immunocytochemical staining for light chains and interphase fluorescence in situ hybridization (FISH), aberrant light-chain +ve cells were detected in the circulating CD19+ cell fraction. Each kind of chromosomal change present in the myeloma tumour cells was found to be shared by a small fraction of CD19+ cells (0.1-1.8%; median 0.36%, n = 6). In one MGUS patient, aberrant cells could be identified with a frequency of 0.34% within the CD19-sorted cell fraction. Clonotypic cells were detected with a frequency of 0.01-0.07% of peripheral blood nucleated cells by m-RNA in situ hybridization with patient-specific probes in three investigated patients. These results provide evidence that the circulating clonotypic B cells are closely related to the malignant plasma cells in myeloma and MGUS. FAU - Zojer, Niklas AU - Zojer N AD - First Department of Internal Medicine and Medical Oncology, Wilhelminenspital, University of Vienna, Montleartstrasse 37, 1160 Vienna, Austria. FAU - Schuster-Kolbe, Judith AU - Schuster-Kolbe J FAU - Assmann, Irene AU - Assmann I FAU - Ackermann, Jutta AU - Ackermann J FAU - Strasser, Kathrin AU - Strasser K FAU - Hubl, Wolfgang AU - Hubl W FAU - Drach, Johannes AU - Drach J FAU - Ludwig, Heinz AU - Ludwig H LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - Br J Haematol JT - British journal of haematology JID - 0372544 RN - 0 (Antigens, CD19) RN - 0 (Disulfides) RN - 0 (Immunoglobulin G) RN - 0 (Immunoglobulin Light Chains) RN - 0 (Membrane Glycoproteins) RN - 0 (Proteoglycans) RN - 0 (RNA, Messenger) RN - 0 (SDC1 protein, human) RN - 0 (Syndecan-1) RN - 0 (Syndecans) RN - 135949-60-9 (RB 101) RN - 47E5O17Y3R (Phenylalanine) SB - IM MH - Aged MH - Aged, 80 and over MH - Antigens, CD19/*immunology MH - Bone Marrow Examination MH - *Chromosome Aberrations MH - Chromosomes, Human, Pair 11 MH - Chromosomes, Human, Pair 17 MH - Clone Cells MH - Disease Progression MH - Disulfides MH - Gene Deletion MH - Genes, Immunoglobulin MH - Genes, Retinoblastoma MH - Genes, p53 MH - Humans MH - Immunoglobulin G MH - Immunoglobulin Light Chains MH - Immunohistochemistry/methods MH - In Situ Hybridization, Fluorescence MH - Membrane Glycoproteins MH - Middle Aged MH - Multiple Myeloma/*genetics/immunology MH - Paraproteinemias/*genetics/immunology MH - Phenylalanine/*analogs & derivatives MH - Plasma Cells/*physiology MH - Polymerase Chain Reaction/methods MH - Proteoglycans MH - RNA, Messenger/analysis MH - Syndecan-1 MH - Syndecans MH - T-Lymphocytes/immunology/*physiology EDAT- 2002/06/13 10:00 MHDA- 2002/09/11 10:01 CRDT- 2002/06/13 10:00 PHST- 2002/06/13 10:00 [pubmed] PHST- 2002/09/11 10:01 [medline] PHST- 2002/06/13 10:00 [entrez] AID - 3529 [pii] AID - 10.1046/j.1365-2141.2002.03529.x [doi] PST - ppublish SO - Br J Haematol. 2002 Jun;117(4):852-9. doi: 10.1046/j.1365-2141.2002.03529.x.