PMID- 12011125 OWN - NLM STAT- MEDLINE DCOM- 20020605 LR - 20220316 IS - 0732-183X (Print) IS - 0732-183X (Linking) VI - 20 IP - 10 DP - 2002 May 15 TI - Comparison of cytogenetic and molecular cytogenetic detection of chromosome abnormalities in 240 consecutive adult patients with acute myeloid leukemia. PG - 2480-5 AB - PURPOSE: To prospectively compare cytogenetic and molecular cytogenetic analysis for the detection of the most relevant chromosome abnormalities in a large series of patients with acute myeloid leukemia (AML). PATIENTS AND METHODS: Two hundred forty consecutive adult patients with AML entered onto the multicenter treatment trial AML HD93 were studied. Chromosome banding and fluorescence in situ hybridization (FISH) applying a comprehensive set of genomic DNA probes were performed in a single reference laboratory. RESULTS: Two cases of inv(16), three cases of t(11q23), and three cases of t(8;21)var were only detected by molecular cytogenetics. By FISH, aberrations were identified in three cases with normal karyotypes: inv(16), -Y (in a patient with low metaphase yield on chromosome banding) and a 12p microdeletion. Additional aneuploidies, in particular +8q and +11q, were diagnosed by FISH; however, virtually all these aberrations occurred in patients with complex karyotypes or as an additional abnormality in leukemias with an AML-specific translocation. Finally, aberrations were detected by FISH in eight of 14 patients with no assessable metaphases. CONCLUSION: In most cases of AML, conventional cytogenetic study reliably detects chromosomal abnormalities, and this method should not be replaced by FISH. FISH should be used as a complementary method for the detection of more subtle abnormalities, such as inv(16) and t(11q23), in all patients with newly diagnosed AML and for suspected t(8;21)var. Furthermore, molecular cytogenetics using this comprehensive set of DNA probes provides a valuable diagnostic tool for patients with poor chromosome morphology, low or no yields of metaphase cells, or both. FAU - Frohling, Stefan AU - Frohling S AD - Department of Internal Medicine III, University Hospital of Ulm, Robert-Koch-Strasse 8, 89081 Ulm, Germany. FAU - Skelin, Silvia AU - Skelin S FAU - Liebisch, Claudia AU - Liebisch C FAU - Scholl, Claudia AU - Scholl C FAU - Schlenk, Richard F AU - Schlenk RF FAU - Dohner, Hartmut AU - Dohner H FAU - Dohner, Konstanze AU - Dohner K CN - Acute Myeloid Leukemia Study Group, Ulm LA - eng PT - Comparative Study PT - Journal Article PT - Multicenter Study PT - Research Support, Non-U.S. Gov't PL - United States TA - J Clin Oncol JT - Journal of clinical oncology : official journal of the American Society of Clinical Oncology JID - 8309333 RN - 0 (DNA Probes) RN - 0 (DNA, Neoplasm) SB - IM MH - Acute Disease MH - Adolescent MH - Adult MH - *Chromosome Aberrations MH - Chromosome Deletion MH - Chromosomes/*genetics MH - Cytogenetics MH - DNA Probes MH - DNA, Neoplasm/genetics MH - Humans MH - In Situ Hybridization, Fluorescence MH - Karyotyping MH - Leukemia, Myeloid/*genetics/pathology MH - Middle Aged MH - Molecular Biology MH - Prospective Studies MH - Translocation, Genetic EDAT- 2002/05/16 10:00 MHDA- 2002/06/06 10:01 CRDT- 2002/05/16 10:00 PHST- 2002/05/16 10:00 [pubmed] PHST- 2002/06/06 10:01 [medline] PHST- 2002/05/16 10:00 [entrez] AID - 10.1200/JCO.2002.08.155 [doi] PST - ppublish SO - J Clin Oncol. 2002 May 15;20(10):2480-5. doi: 10.1200/JCO.2002.08.155.