PMID- 9186534 OWN - NLM STAT- MEDLINE DCOM- 19970707 LR - 20190909 IS - 0902-4441 (Print) IS - 0902-4441 (Linking) VI - 58 IP - 4 DP - 1997 Apr TI - Differences in cell lineage involvement between MDS-AML and de novo AML studied by fluorescence in situ hybridization in combination with morphology. PG - 241-5 AB - We have employed fluorescence in situ hybridization (FISH) in combination with standard morphology (MGG/FISH) to identify the clonal involvement of different bone marrow cell lineages in 20 AML patients (14 MDS-AML, 6 de novo AML). Even though the number of cells belonging to the abnormal clone varied between individual cases, the percentage of clonal blasts was similar in MDS-AML and de novo AML patients. The erythropoietic cells appeared to be part of the abnormal clone in 13 of 14 patients with MDS-AML, but only in 1 of 6 with de novo AML. Similarly, clonal granulocytes were detected in 13 of 14 patients with MDS-AML, compared to 2 of 6 with de novo AML. Lymphocytes consistently displayed normal, diploid karyotype. The results suggest that it is possible to distinguish between MDS-AML and de novo AML by the use of MGG/FISH; in de novo AML the abnormal chromosomal clone is generally confined to the immature myeloid cells, while in MDS-AML mature granulocytes and erythroid cells are of clonal origin. It is, however, not possible to conclude that MDS-AML is a "multipotent" type of leukaemia, since it cannot be ruled out that the chromosomally aberrant erythroid cells and granulocytes represent surviving cells from the original MDS clone. FAU - Bernell, P AU - Bernell P AD - Department of Medicine, Karolinska Institute at Danderyd Hospital, Stockholm, Sweden. FAU - Arvidsson, I AU - Arvidsson I FAU - Hast, R AU - Hast R FAU - Jacobsson, B AU - Jacobsson B FAU - Stenke, L AU - Stenke L LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - Eur J Haematol JT - European journal of haematology JID - 8703985 SB - IM MH - Adult MH - Aged MH - Aged, 80 and over MH - Bone Marrow/*pathology MH - Chromosomes, Human, Pair 7 MH - Female MH - Granulocytes/pathology MH - Humans MH - In Situ Hybridization, Fluorescence MH - Interphase MH - Karyotyping MH - Leukemia, Monocytic, Acute/blood/classification/*genetics/*pathology MH - Male MH - Middle Aged MH - Myelodysplastic Syndromes/blood/*genetics/*pathology EDAT- 1997/04/01 00:00 MHDA- 1997/04/01 00:01 CRDT- 1997/04/01 00:00 PHST- 1997/04/01 00:00 [pubmed] PHST- 1997/04/01 00:01 [medline] PHST- 1997/04/01 00:00 [entrez] AID - 10.1111/j.1600-0609.1997.tb01661.x [doi] PST - ppublish SO - Eur J Haematol. 1997 Apr;58(4):241-5. doi: 10.1111/j.1600-0609.1997.tb01661.x.