PMID- 11069034 OWN - NLM STAT- MEDLINE DCOM- 20001122 LR - 20190915 IS - 0887-6924 (Print) IS - 0887-6924 (Linking) VI - 14 IP - 11 DP - 2000 Nov TI - Deletions of chromosome 13q in monoclonal gammopathy of undetermined significance. PG - 1975-9 AB - Since deletion of chromosome 13q is a clinically relevant feature in multiple myeloma (MM), we analyzed bone marrow plasma cells from 29 patients with monoclonal gammopathy of undetermined significance (MGUS) to investigate the chromosome 13 status in MGUS. Studies were performed by interphase fluorescence in situ hybridization (FISH) with a panel of 13q14-specific probes (RB1, D13S319, D13S25, D13S31). Plasma cells with a deletion of at least one of the 13q14 loci were detected in 13 patients (44.8%) with MGUS. In five patients (17.2%), deletions of all four 13q14-specific probes were observed, and the additional deletion of a 13q telomeric region (D13S327) suggested loss of the entire 13q arm or monosomy 13. Loss of 13q14 was observed to be monoallelic and to occur in 11.0 to 35.0% of plasma cells (cut-off levels for a deletion <10% with all probes). Nine of 17 patients (52.9%) with MM progressing from a pre-existing MGUS had evidence for a deletion of 13q14 as determined by FISH with the RB1 probe. These results suggest that deletion of 13q14 is an early event in the development of monoclonal gammopathies, but its role for the eventual progression to MM remains to be determined prospectively. FAU - Konigsberg, R AU - Konigsberg R AD - First Department of Internal Medicine, University of Vienna, Austria. FAU - Ackermann, J AU - Ackermann J FAU - Kaufmann, H AU - Kaufmann H FAU - Zojer, N AU - Zojer N FAU - Urbauer, E AU - Urbauer E FAU - Kromer, E AU - Kromer E FAU - Jager, U AU - Jager U FAU - Gisslinger, H AU - Gisslinger H FAU - Schreiber, S AU - Schreiber S FAU - Heinz, R AU - Heinz R FAU - Ludwig, H AU - Ludwig H FAU - Huber, H AU - Huber H FAU - Drach, J AU - Drach J LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - Leukemia JT - Leukemia JID - 8704895 RN - 0 (Paraproteins) SB - IM MH - Adult MH - Aged MH - Aged, 80 and over MH - *Chromosome Deletion MH - Chromosomes, Human, Pair 13/genetics/*ultrastructure MH - Disease Progression MH - Follow-Up Studies MH - Humans MH - In Situ Hybridization, Fluorescence MH - Interphase MH - Middle Aged MH - Monosomy MH - Multiple Myeloma/genetics/pathology MH - Paraproteinemias/*genetics/pathology MH - Paraproteins/analysis MH - Plasma Cells/ultrastructure EDAT- 2000/11/09 11:00 MHDA- 2001/02/28 10:01 CRDT- 2000/11/09 11:00 PHST- 2000/11/09 11:00 [pubmed] PHST- 2001/02/28 10:01 [medline] PHST- 2000/11/09 11:00 [entrez] AID - 10.1038/sj.leu.2401909 [doi] PST - ppublish SO - Leukemia. 2000 Nov;14(11):1975-9. doi: 10.1038/sj.leu.2401909.