# Cytoplasmic light-chain immunofluorescence combined with FISH in bone marrow smears to detect cytogenetic abnormalities in multiple myeloma

**Authors:** 雨 时, 慧 杨, 睿 郭, 祯 郭, 建勇 李, 雨洁 吴, 海荣 仇

PMC · DOI: 10.3760/cma.j.cn121090-20231204-00291 · Chinese Journal of Hematology · 2024-06-01

## TL;DR

This study compares New-FISH with other methods to detect genetic abnormalities in multiple myeloma patients, finding high consistency and effectiveness.

## Contribution

New-FISH is shown to be a reliable alternative for detecting cytogenetic abnormalities in multiple myeloma.

## Key findings

- New-FISH detected abnormalities in 100% of cases with no significant difference compared to cIg-FISH.
- New-FISH showed consistent results with MACS-FISH for 1q21 amplification and IgH abnormalities.
- t(4;14) was detected in 26.7% of patients with no difference between methods.

## Abstract

分析骨髓涂片胞质轻链免疫荧光结合FISH技术（New-FISH）检测多发性骨髓瘤（MM）细胞遗传学异常的敏感性。

纳入南京医科大学第一附属医院2022年4月至2023年10月收治的42例MM患者，采用组合探针1q21/1p32、p53、IgH、IgH/FGFR3［t（4;14）］、IgH/MAF［t（14;16）］对患者同时进行New-FISH和CD138磁珠分选结合FISH（MACS-FISH）或胞质轻链免疫荧光结合FISH（cIg-FISH）检测，分析其细胞遗传学检测结果。

23例MM患者中，cIg-FISH法、New-FISH法异常检出率分别为95.7％、100.0％（P>0.05）。cIg-FISH法、New-FISH法对1q21扩增、1p32缺失、p53缺失、IgH异常的检出率一致，分别为52.2％、8.7％、17.4％、65.2％。进一步对IgH异常的患者进行t（4;14）、t（14;16）检测，t（4;14）阳性率为26.7％，t（14;16）未检出，两种方法检测结果相同。19例MM患者中，MACS-FISH法、New-FISH法异常检出率分别为73.7％、63.2％（P>0.05）。MACS-FISH法对1q21扩增、1p32缺失、IgH异常的检出率略高于New-FISH法，但差异均无统计学意义（P值均>0.05）。

New-FISH法对于MM患者细胞遗传学异常检出率较高，与MACS-FISH、cIg-FISH一致性较好。

## Linked entities

- **Genes:** TP53 (tumor protein p53) [NCBI Gene 7157], IGH (immunoglobulin heavy locus) [NCBI Gene 3492], FGFR3 (fibroblast growth factor receptor 3) [NCBI Gene 2261], MAF (MAF bZIP transcription factor) [NCBI Gene 4094]
- **Diseases:** multiple myeloma (MONDO:0009693)

## Full-text entities

- **Genes:** IGH (immunoglobulin heavy locus) [NCBI Gene 3492] {aka IGD1, IGH.1@, IGH@, IGHD@, IGHDY1, IGHJ}, FGFR3 (fibroblast growth factor receptor 3) [NCBI Gene 2261] {aka ACH, CD333, CEK2, HSFGFR3EX, JTK4}, SDC1 (syndecan 1) [NCBI Gene 6382] {aka CD138, SDC, SYND1, syndecan}, MAF (MAF bZIP transcription factor) [NCBI Gene 4094] {aka AYGRP, CCA4, CTRCT21, c-MAF}, TP53 (tumor protein p53) [NCBI Gene 7157] {aka BCC7, BMFS5, LFS1, P53, TRP53}, FN1 (fibronectin 1) [NCBI Gene 2335] {aka CIG, ED-B, FINC, FN, FNZ, GFND}
- **Diseases:** cytogenetic abnormalities (MESH:D002869), IgH abnormalities (MESH:D000014), MM (MESH:D009101)
- **Species:** Homo sapiens (human, species) [taxon 9606]

## Full text

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## Figures

2 figures with captions in the complete paper: https://tomesphere.com/paper/PMC11310818/full.md

## References

19 references — full list in the complete paper: https://tomesphere.com/paper/PMC11310818/full.md

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Source: https://tomesphere.com/paper/PMC11310818