PMID- 35837374 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20220716 IS - 1927-1220 (Electronic) IS - 1927-1212 (Print) IS - 1927-1212 (Linking) VI - 11 IP - 3 DP - 2022 Jun TI - Conventional Karyotyping and Fluorescence In Situ Hybridization for Detection of Chromosomal Abnormalities in Multiple Myeloma. PG - 87-91 LID - 10.14740/jh1007 [doi] AB - BACKGROUND: Multiple myeloma (MM) is a genetically heterogeneous disease, with cytogenetic findings that determine disease behavior. Genetic abnormalities can be assessed by fluorescence in situ hybridization (FISH) analysis and/or G-banded karyotyping. The two methods produce unique and overlapping information, and the clinical utility of using both is investigated here. METHODS: Seventy patients diagnosed with MM at a hospital in Southern California were retrospectively reviewed for the FISH and G-banded karyotyping results obtained from bone marrow specimens. RESULTS: Karyotype was normal in 71% (50/70), abnormal in 27% (19/70), and inadequate in 1% (1/70). Among patients with abnormal karyotype, FISH provided additional information about genetic aberrations in 95% of cases (18/19). Among cases with abnormal FISH, karyotype provided additional information about genetic aberrations in 27% of cases (18/66). When numerical abnormalities were present (detected by FISH and/or karyotype), FISH detected them in 95% (54/57), of which karyotype missed 70% (38/54) of the time. Karyotyping detected numerical abnormalities in 33% (19/57), which FISH missed 16% (3/19) of the time. CONCLUSIONS: Karyotyping and FISH analysis in MM each provide unique information. For most patients, performing both tests together will provide more information than either test alone. CI - Copyright 2022, Crabtree et al. FAU - Crabtree, Matthew AU - Crabtree M AUID- ORCID: 0000-0002-3230-0599 AD - Department of Pathology, Harbor-UCLA Medical Center, Torrance, CA 90502, USA. FAU - Cai, Jennifer AU - Cai J AUID- ORCID: 0000-0002-1877-0316 AD - Department of Pathology, Harbor-UCLA Medical Center, Torrance, CA 90502, USA. FAU - Qing, Xin AU - Qing X AUID- ORCID: 0000-0001-8109-590X AD - Department of Pathology, Harbor-UCLA Medical Center, Torrance, CA 90502, USA. LA - eng PT - Journal Article DEP - 20220627 PL - Canada TA - J Hematol JT - Journal of hematology JID - 101635099 PMC - PMC9275438 OTO - NOTNLM OT - Cytogenetics OT - FISH OT - Karyotype OT - Multiple myeloma COIS- None to declare. EDAT- 2022/07/16 06:00 MHDA- 2022/07/16 06:01 PMCR- 2022/06/27 CRDT- 2022/07/15 02:40 PHST- 2022/04/22 00:00 [received] PHST- 2022/06/18 00:00 [accepted] PHST- 2022/07/15 02:40 [entrez] PHST- 2022/07/16 06:00 [pubmed] PHST- 2022/07/16 06:01 [medline] PHST- 2022/06/27 00:00 [pmc-release] AID - 10.14740/jh1007 [doi] PST - ppublish SO - J Hematol. 2022 Jun;11(3):87-91. doi: 10.14740/jh1007. Epub 2022 Jun 27.