PMID- 10992302 OWN - NLM STAT- MEDLINE DCOM- 20001107 LR - 20191025 IS - 1045-2257 (Print) IS - 1045-2257 (Linking) VI - 29 IP - 3 DP - 2000 Nov TI - Combined immunophenotyping and FISH identifies the involvement of B-cells in 5q- syndrome. PG - 276-80 AB - The 5q- syndrome is a distinct subtype of myelodysplastic syndrome (MDS) characterized by refractory anemia, deletion of the long arm of chromosome 5, del(5q), as the sole cytogenetic abnormality, and a low frequency of transformation to acute leukemia. Using combined immunophenotyping and fluorescence in situ hybridization (FISH), studies were carried out on bone marrow smears of three 5q- syndrome cases to identify the cell lineages carrying the 5q deletion. In all three cases, the granulocytic, monocytic, and erythroid lineages possessed the del(5q) clonal marker, whereas the T-lymphocytes did not. Interestingly, in one case, cells of B-lymphoid lineage also showed the presence of the del(5q). This is the first report to date showing involvement of an acquired 5q deletion associated with MDS in B-cells. This result suggests that in some cases, MDS arises in a multipotent cell with a capacity to differentiate into both myeloid and lymphoid cells. CI - Copyright 2000 Wiley-Liss, Inc. FAU - Jaju, R J AU - Jaju RJ AD - Leukaemia Research Fund Molecular Haematology Unit, Clinical Laboratory Sciences, University of Oxford, John Radcliffe Hospital, Oxford, UK. rina.jaju@cellular-science.ox.ac.uk FAU - Jones, M AU - Jones M FAU - Boultwood, J AU - Boultwood J FAU - Kelly, S AU - Kelly S FAU - Mason, D Y AU - Mason DY FAU - Wainscoat, J S AU - Wainscoat JS FAU - Kearney, L AU - Kearney L LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Genes Chromosomes Cancer JT - Genes, chromosomes & cancer JID - 9007329 RN - 0 (Biomarkers) SB - IM MH - Adult MH - Aged MH - Anemia, Refractory/diagnosis/genetics/*pathology MH - B-Lymphocytes/*pathology MH - Biomarkers MH - Bone Marrow Cells/metabolism/pathology MH - *Chromosome Deletion MH - Chromosomes, Human, Pair 5/*genetics MH - Female MH - Humans MH - *Immunophenotyping/methods MH - *In Situ Hybridization, Fluorescence/methods MH - Middle Aged MH - Myelodysplastic Syndromes/diagnosis/*genetics/*pathology EDAT- 2000/09/19 11:00 MHDA- 2001/02/28 10:01 CRDT- 2000/09/19 11:00 PHST- 2000/09/19 11:00 [pubmed] PHST- 2001/02/28 10:01 [medline] PHST- 2000/09/19 11:00 [entrez] AID - 10.1002/1098-2264(2000)9999:9999<::AID-GCC1035>3.0.CO;2-L [pii] AID - 10.1002/1098-2264(2000)9999:9999<::aid-gcc1035>3.0.co;2-l [doi] PST - ppublish SO - Genes Chromosomes Cancer. 2000 Nov;29(3):276-80. doi: 10.1002/1098-2264(2000)9999:9999<::aid-gcc1035>3.0.co;2-l.