PMID- 25972330 OWN - NLM STAT- MEDLINE DCOM- 20150728 LR - 20220316 IS - 1943-7722 (Electronic) IS - 0002-9173 (Linking) VI - 143 IP - 6 DP - 2015 Jun TI - Conventional karyotyping and fluorescence in situ hybridization: an effective utilization strategy in diagnostic adult acute myeloid leukemia. PG - 873-8 LID - 10.1309/AJCPP6LVMQG4LNCK [doi] AB - OBJECTIVES: Cytogenetics defines disease entities and predicts prognosis in acute myeloid leukemia (AML). Conventional karyotyping provides a comprehensive view of the genome, while fluorescence in situ hybridization (FISH) detects targeted abnormalities. The aim of this study was to compare the utility of karyotyping and FISH in adult AML. METHODS: We studied 250 adult AML cases with concurrent karyotyping and FISH testing. Karyotyping was considered adequate when 20 or more metaphases were analyzed. RESULTS: In total, 220 cases had adequate karyotyping and were classified as normal karyotype/normal FISH (n = 92), normal karyotype/abnormal FISH (n = 4), abnormal karyotype/normal FISH (n = 8), and abnormal karyotype/abnormal FISH (n = 116). The overall karyotype/FISH concordance rate was 97.7% with five discordant cases identified, four from the normal karyotype/abnormal FISH group and one from the abnormal karyotype/abnormal FISH group. No karyotype/FISH discordance was seen in the abnormal karyotype/normal FISH group for the FISH probes evaluated. FISH lent prognostic information in one (0.5%) of 220 cases with normal karyotype/abnormal FISH: CBFB-MYH11 fusion, indicating favorable prognosis. CONCLUSIONS: In adult AML, FISH rarely provides additional information when karyotyping is adequate. We therefore propose an evidence-based, cost-effective algorithmic approach for routine conventional karyotype and FISH testing in adult AML workup. CI - Copyright(c) by the American Society for Clinical Pathology. FAU - He, Rong AU - He R AD - From the Divisions of Hematopathology and He.Rong@mayo.edu. FAU - Wiktor, Anne E AU - Wiktor AE AD - Laboratory Genetics, Department of Laboratory Medicine and Pathology, and. FAU - Hanson, Curtis A AU - Hanson CA AD - From the Divisions of Hematopathology and. FAU - Ketterling, Rhett P AU - Ketterling RP AD - Laboratory Genetics, Department of Laboratory Medicine and Pathology, and. FAU - Kurtin, Paul J AU - Kurtin PJ AD - From the Divisions of Hematopathology and. FAU - Van Dyke, Daniel L AU - Van Dyke DL AD - Laboratory Genetics, Department of Laboratory Medicine and Pathology, and. FAU - Litzow, Mark R AU - Litzow MR AD - Division of Hematology, Department of Medicine, Mayo Clinic College of Medicine, Rochester, MN. FAU - Howard, Matthew T AU - Howard MT FAU - Reichard, Kaaren K AU - Reichard KK AD - From the Divisions of Hematopathology and. LA - eng PT - Comparative Study PT - Journal Article PL - England TA - Am J Clin Pathol JT - American journal of clinical pathology JID - 0370470 SB - IM EIN - Am J Clin Pathol. 2015 Jul;144(1):175. Howard, Matthew H [corrected to Howard, Matthew T]. PMID: 26071478 CIN - Am J Clin Pathol. 2016 Mar;145(3):430-2. PMID: 27124927 MH - Adult MH - Algorithms MH - Female MH - Humans MH - In Situ Hybridization, Fluorescence/*methods MH - Karyotyping/*methods MH - Leukemia, Myeloid, Acute/*genetics MH - Male OTO - NOTNLM OT - Genetics OT - Hematology OT - Hematopathology OT - Molecular diagnostics EDAT- 2015/05/15 06:00 MHDA- 2015/07/29 06:00 CRDT- 2015/05/15 06:00 PHST- 2015/05/15 06:00 [entrez] PHST- 2015/05/15 06:00 [pubmed] PHST- 2015/07/29 06:00 [medline] AID - 143/6/873 [pii] AID - 10.1309/AJCPP6LVMQG4LNCK [doi] PST - ppublish SO - Am J Clin Pathol. 2015 Jun;143(6):873-8. doi: 10.1309/AJCPP6LVMQG4LNCK.