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Cytogenetic testing by fluorescence in situ hybridization is improved by plasma cell sorting in multiple myeloma

 Jihye Ha  ;  Hyunsoo Cho  ;  Taek Gyu Lee  ;  Saeam Shin  ;  Haerim Chung  ;  Ji Eun Jang  ;  Soo-Jeong Kim  ;  June-Won Cheong  ;  Seung-Tae Lee  ;  Jin Seok Kim  ;  Jong Rak Choi 
 SCIENTIFIC REPORTS, Vol.12(1) : 8287, 2022-05 
Journal Title
Issue Date
Chromosome Aberrations ; Cytogenetic Analysis ; Humans ; In Situ Hybridization, Fluorescence / methods ; Multiple Myeloma* / diagnosis ; Multiple Myeloma* / genetics ; Plasma Cells*
Accurate detection of cytogenetic abnormalities has become more important for improving risk-adapted treatment strategies in multiple myeloma (MM). However, precise cytogenetic testing by fluorescence in situ hybridization (FISH) is challenged by the dilution effect of bone marrow specimens and poor growth of plasma cells ex vivo. It has been suggested that FISH should be performed in combination with plasma cell enrichment strategies. We examined cytogenetic abnormalities in newly diagnosed MM and compared the efficacy of three different enrichment modalities for FISH: direct FISH (n = 137), fluorescence immunophenotyping and interphase cytogenetics as a tool for the investigation of neoplasms (FICTION) technique (n = 224), and a plasma cell sorting FISH with fluorescence-activated cell sorter (FACS) (n = 132). FISH disclosed cytogenetic abnormalities in 38.0% of samples by direct FISH, 56.3% by FICTION, and 95.5% by FACS-FISH, and the percentage of cells with abnormal signals detected by FISH was significantly higher by FACS-FISH than direct FISH or FICTION. Our results suggest that the efficacy of FISH is dependent on the plasma cell enrichment modalities and reveal that plasma cell sorting FISH with FACS enables better detection of cytogenetic abnormalities in diagnostic MM samples.
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1. College of Medicine (의과대학) > Dept. of Internal Medicine (내과학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Dept. of Laboratory Medicine (진단검사의학교실) > 1. Journal Papers
Yonsei Authors
Kim, Soo Jeong(김수정) ORCID logo https://orcid.org/0000-0001-8859-3573
Kim, Jin Seok(김진석) ORCID logo https://orcid.org/0000-0001-8986-8436
Shin, Saeam(신새암) ORCID logo https://orcid.org/0000-0003-1501-3923
Lee, Seung-Tae(이승태) ORCID logo https://orcid.org/0000-0003-1047-1415
Jang, Ji Eun(장지은) ORCID logo https://orcid.org/0000-0001-8832-1412
Cheong, June-Won(정준원) ORCID logo https://orcid.org/0000-0002-1744-0921
Chung, Hae Rim(정해림) ORCID logo https://orcid.org/0000-0002-7926-9285
Cho, Hyunsoo(조현수) ORCID logo https://orcid.org/0000-0003-2651-6403
Choi, Jong Rak(최종락) ORCID logo https://orcid.org/0000-0002-0608-2989
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