PMID- 15193446 OWN - NLM STAT- MEDLINE DCOM- 20040727 LR - 20211203 IS - 0165-4608 (Print) IS - 0165-4608 (Linking) VI - 152 IP - 1 DP - 2004 Jul 1 TI - Cryptic deletion involving the ATM locus at 11q22.3 approximately q23.1 in B-cell chronic lymphocytic leukemia and related disorders. PG - 72-6 AB - B-cell chronic lymphocytic leukemia (B-CLL) follows a heterogeneous clinical course, and several biological parameters have been investigated to try to predict its clinical outcome. New staging systems including cytogenetics and CD38 expression as predictive values have been developed. Deletions of 11q22.3 approximately q23.1 detected at diagnosis in cases of CLL patients have been associated with a relatively aggressive disease. This region, which contains the ataxia telangiectasia mutated (ATM) locus, may be implicated in the pathogenesis of lymphoid malignancies. We developed a set of dual-color specific probes to evaluate the ATM deletion by means of fluorescence in situ hybridization (FISH). We also used flow cytometry to investigate CD38 expression. Forty-one patients with CLL or low-grade B-cell lymphomas were studied at diagnosis or before treatment. FISH showed that only three CLL patients had deletions in the 11q23 locus; all three had progressive disease and were resistant to treatment. These data show that our FISH set of probes efficiently detects ATM deletions in CLL. No correlation was found between ATM deletions and CD38 expression level. These results confirm the prognostic significance of ATM deletions in CLL. FAU - Eclache, Virginie AU - Eclache V AD - Laboratoire d'Hematologie, Unite Fonctionelle d'Hematologie, Hopital Jean Verdier, Avenue du 14 Juillet, 93145 Bondy Cedex, France. virginie.eclache@jvr.ap-hop-paris.fr FAU - Caulet-Maugendre, Sylvie AU - Caulet-Maugendre S FAU - Poirel, Helene A AU - Poirel HA FAU - Djemai, Mohand AU - Djemai M FAU - Robert, Jacqueline AU - Robert J FAU - Lejeune, Francoise AU - Lejeune F FAU - Raphael, Martine AU - Raphael M LA - eng PT - Journal Article PL - United States TA - Cancer Genet Cytogenet JT - Cancer genetics and cytogenetics JID - 7909240 RN - 0 (Antigens, CD) RN - 0 (Cell Cycle Proteins) RN - 0 (DNA-Binding Proteins) RN - 0 (Membrane Glycoproteins) RN - 0 (Tumor Suppressor Proteins) RN - EC 2.7.11.1 (ATM protein, human) RN - EC 2.7.11.1 (Ataxia Telangiectasia Mutated Proteins) RN - EC 2.7.11.1 (Protein Serine-Threonine Kinases) RN - EC 3.2.2.5 (ADP-ribosyl Cyclase) RN - EC 3.2.2.5 (CD38 protein, human) RN - EC 3.2.2.6 (ADP-ribosyl Cyclase 1) SB - IM MH - ADP-ribosyl Cyclase/metabolism MH - ADP-ribosyl Cyclase 1 MH - Adult MH - Aged MH - Antigens, CD/metabolism MH - Ataxia Telangiectasia/genetics MH - Ataxia Telangiectasia Mutated Proteins MH - Cell Cycle Proteins MH - *Chromosome Deletion MH - Chromosomes, Human, Pair 11/*genetics MH - DNA-Binding Proteins MH - Disease Progression MH - Female MH - Flow Cytometry MH - Follow-Up Studies MH - Humans MH - In Situ Hybridization, Fluorescence MH - Interphase MH - Karyotyping MH - Leukemia, Lymphocytic, Chronic, B-Cell/diagnosis/*genetics/therapy MH - Leukemia, Prolymphocytic/diagnosis/*genetics/therapy MH - Lymphoma/diagnosis/*genetics/therapy MH - Male MH - Membrane Glycoproteins MH - Middle Aged MH - Neoplasm Staging MH - Prognosis MH - Protein Serine-Threonine Kinases/*genetics MH - Tumor Suppressor Proteins EDAT- 2004/06/15 05:00 MHDA- 2004/07/28 05:00 CRDT- 2004/06/15 05:00 PHST- 2003/08/29 00:00 [received] PHST- 2003/09/29 00:00 [revised] PHST- 2003/10/13 00:00 [accepted] PHST- 2004/06/15 05:00 [pubmed] PHST- 2004/07/28 05:00 [medline] PHST- 2004/06/15 05:00 [entrez] AID - S0165460803004631 [pii] AID - 10.1016/j.cancergencyto.2003.10.010 [doi] PST - ppublish SO - Cancer Genet Cytogenet. 2004 Jul 1;152(1):72-6. doi: 10.1016/j.cancergencyto.2003.10.010.