PMID- 25430081 OWN - NLM STAT- MEDLINE DCOM- 20150825 LR - 20181113 IS - 1865-3774 (Electronic) IS - 0925-5710 (Linking) VI - 101 IP - 1 DP - 2015 Jan TI - Clonal origin and evolution of myelodysplastic syndrome analyzed by dysplastic morphology and fluorescence in situ hybridization. PG - 58-66 LID - 10.1007/s12185-014-1700-1 [doi] AB - Myelodysplastic syndromes (MDS) are clonal disorders of hematopoietic stem/progenitor cells. As bone marrow cells are extremely diverse in these disorders, the origin and evolution of MDS clones are difficult to identify and trace. Cellular dysplasia is a distinct morphologic feature; however, whether the dysplastic cells represent abnormal clones or only nonspecific superficial phenomena remains to be clarified. To address this question, 97 patients were examined for dysplasia features, among them bone marrow slides of 16 patients with chromosomal abnormalities were subjected to fluorescence in situ hybridization (FISH) to determine the karyotype of these dysplastic cells. Furthermore, the emerging frequencies of abnormal karyotypes in various differentiated stages of each lineage were also evaluated by a combination of morphological evaluation and FISH karyotyping. Our results indicate that the overall percentage of dysplastic cells does not differ significantly among the WHO subtypes, while the megakaryoid lineage presents the most frequent dysplasia in all subtypes. A positive correlation between dysplastic cells and FISH-detectable abnormal clones was observed, but the dysplastic morphology was not a specific feature of FISH-detectable abnormal clones. FISH-detectable abnormal clones can differentiate into mature granulocytes and erythrocytes, in coexistence with cells originating from the normal clones. FAU - Fu, Chun-Mei AU - Fu CM AD - Jiangsu Institute of Hematology, The first Affiliated Hospital of Soochow University, Key Laboratory of Thrombosis and Hemostasis of Ministry of Health, 188 Shizi Street, Suzhou, 215006, Jiangsu, People's Republic of China. FAU - Chen, Zi-Xing AU - Chen ZX FAU - Liu, Dan-Dan AU - Liu DD FAU - Zhang, Jun AU - Zhang J FAU - Pan, Jin-Lan AU - Pan JL FAU - Liang, Jian-Ying AU - Liang JY LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20141128 PL - Japan TA - Int J Hematol JT - International journal of hematology JID - 9111627 SB - IM MH - Adolescent MH - Adult MH - Aged MH - Aged, 80 and over MH - Bone Marrow/*pathology MH - Bone Marrow Cells/metabolism/pathology MH - Cell Lineage/genetics MH - Chromosome Aberrations MH - Clonal Evolution/*genetics MH - Female MH - Humans MH - In Situ Hybridization, Fluorescence MH - Karyotyping MH - Male MH - Middle Aged MH - Myelodysplastic Syndromes/diagnosis/*genetics/*pathology MH - Young Adult EDAT- 2014/11/29 06:00 MHDA- 2015/08/26 06:00 CRDT- 2014/11/29 06:00 PHST- 2013/12/31 00:00 [received] PHST- 2014/11/11 00:00 [accepted] PHST- 2014/10/29 00:00 [revised] PHST- 2014/11/29 06:00 [entrez] PHST- 2014/11/29 06:00 [pubmed] PHST- 2015/08/26 06:00 [medline] AID - 10.1007/s12185-014-1700-1 [doi] PST - ppublish SO - Int J Hematol. 2015 Jan;101(1):58-66. doi: 10.1007/s12185-014-1700-1. Epub 2014 Nov 28.