Abstract:
Objective: To compare the consistency of lymphoma multigene detection panels based on next-generation sequencing (NGS) with FISH detection of B-cell lymphoma gene rearrangement. Methods: From January 2019 to May 2023, fusion genes detected by lymphoma-related 413 genes that targeted capture sequencing of 489 B-cell lymphoma tissues embedded in paraffin were collected from Henan Cancer Hospital, and the results were compared with simultaneous FISH detection of four break/fusion genes: BCL2, BCL6, MYC, and CCND1. Consistency was defined as both methods yielding positive or negative results for the same sample. The relationship between fusion mutation abundance in NGS and the positivity rate of cells in FISH was also analyzed. Results: Kappa consistency analysis revealed high consistency between NGS and FISH in detecting the four B-cell lymphoma-related gene rearrangement (P<0.001 for all) ; however, the detection rates of positive individuals differed for the four genes. Compared with FISH, NGS demonstrated a higher detection rate for BCL2 rearrangement, a lower detection rate for BCL6 and MYC rearrangement, and a similar detection rate for CCND1 rearrangement. No correlation was found between fusion mutation abundance in NGS and the positivity rate of cells in FISH. Conclusions: NGS and FISH detection of B-cell lymphoma gene rearrangement demonstrate overall good consistency. NGS is superior to FISH in detecting BCL2 rearrangement, inferior in detecting MYC rearrangement, and comparable in detecting CCND1 rearrangement.
目的: 比较基于二代测序(NGS)的淋巴瘤多基因检测包(panel)与FISH检测B细胞淋巴瘤基因重排的一致性。 方法: 收集2019年1月到2023年5月河南省肿瘤医院对489份石蜡包埋的B细胞淋巴瘤组织进行淋巴瘤相关的413个基因靶向捕获测序后发现的融合基因,与同步采用FISH检测BCL2、BCL6、MYC和CCND1 4种断裂/融合基因的结果进行比较。两种方法对同一个样本的检测结果均为阳性或阴性为一致。同时分析NGS中融合突变丰度与FISH中阳性细胞比率的关系。 结果: Kappa一致性分析显示NGS和FISH在检测4种B细胞淋巴瘤相关基因重排上有较高的一致性(P值均<0.001),但在阳性个体检出率上4种基因有所不同,NGS对BCL2重排的检出率高于FISH,对BCL6和MYC重排的检出率低于FISH,对CCND1重排的检出率与FISH相同。NGS中融合突变丰度与FISH中阳性细胞比率无相关性。 结论: NGS与FISH检测B细胞淋巴瘤基因重排总体上具有较好一致性。在检测BCL2重排上,NGS优于FISH;在检测MYC重排上,NGS劣于FISH;在检测CCND1重排上二者相当。.