PMID- 15085153 OWN - NLM STAT- MEDLINE DCOM- 20040623 LR - 20130304 IS - 0887-6924 (Print) IS - 0887-6924 (Linking) VI - 18 IP - 6 DP - 2004 Jun TI - Inositide-specific phospholipase c beta1 gene deletion in the progression of myelodysplastic syndrome to acute myeloid leukemia. PG - 1122-6 AB - Myelodysplastic syndrome (MDS) is an adult hematological disease that evolves into acute myeloid leukemia (AML) in about 30% of the cases. The availability of a highly specific probe moved us to perform in patients affected with MDS/AML, associated with normal karyotype, painting and fluorescence in situ hybridization (FISH) analysis aimed to check the inositide-specific phospholipase C (PI-PLC) beta1 gene, a player in the control of some checkpoints of the cell cycle. Here we present a preliminary observation in which FISH analysis disclosed in a small group of MDS/AML patients with normal karyotype the monoallelic deletion of the PI-PLCbeta1 gene. On the contrary, PI-PLC beta4, another gene coding for a signaling molecule, located on 20p12.3 at a distance as far as less than 1Mb from PI-PLCbeta1, is unaffected in MDS patients with the deletion of PI-PLC beta1 gene, hinting at an interstitial deletion. The MDS patients, bearing the deletion, rapidly evolved to AML. The data suggest the possible involvement of PI-PLCbeta1 in the progression of the disease and pave the way for a larger investigation aimed at identifying a possible high-risk group among MDS patients with a normal karyotype. FAU - Lo Vasco, V R AU - Lo Vasco VR AD - Cellular Signalling Laboratory, Department of Anatomical Sciences, University of Bologna, Bologna, Italy. FAU - Calabrese, G AU - Calabrese G FAU - Manzoli, L AU - Manzoli L FAU - Palka, G AU - Palka G FAU - Spadano, A AU - Spadano A FAU - Morizio, E AU - Morizio E FAU - Guanciali-Franchi, P AU - Guanciali-Franchi P FAU - Fantasia, D AU - Fantasia D FAU - Cocco, L AU - Cocco L LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - Leukemia JT - Leukemia JID - 8704895 RN - 0 (Isoenzymes) RN - 0 (Phosphatidylinositols) RN - EC 3.1.4.- (Type C Phospholipases) RN - EC 3.1.4.11 (PLCB1 protein, human) RN - EC 3.1.4.11 (PLCB4 protein, human) RN - EC 3.1.4.11 (Phospholipase C beta) SB - IM CIN - Leukemia. 2006 Mar;20(3):521-2; author reply 522-3. PMID: 16424863 MH - Acute Disease MH - Aged MH - Aged, 80 and over MH - Disease Progression MH - Female MH - *Gene Deletion MH - Humans MH - Isoenzymes/*genetics/metabolism MH - Leukemia, Myeloid/epidemiology/*genetics/*pathology MH - Male MH - Middle Aged MH - Myelodysplastic Syndromes/epidemiology/*genetics/*pathology MH - Phosphatidylinositols/metabolism MH - Phospholipase C beta MH - Risk Factors MH - Type C Phospholipases/*genetics/metabolism EDAT- 2004/04/16 05:00 MHDA- 2004/06/24 05:00 CRDT- 2004/04/16 05:00 PHST- 2004/04/16 05:00 [pubmed] PHST- 2004/06/24 05:00 [medline] PHST- 2004/04/16 05:00 [entrez] AID - 2403368 [pii] AID - 10.1038/sj.leu.2403368 [doi] PST - ppublish SO - Leukemia. 2004 Jun;18(6):1122-6. doi: 10.1038/sj.leu.2403368.