PMID- 37348414 OWN - NLM STAT- MEDLINE DCOM- 20230922 LR - 20230922 IS - 1532-8198 (Electronic) IS - 1092-9134 (Linking) VI - 66 DP - 2023 Oct TI - Myc rearrangement and concurrent high protein expression of C-Myc/Bcl2 carry an adverse prognosis in diffuse large B-cell lymphoma. PG - 152165 LID - S1092-9134(23)00063-1 [pii] LID - 10.1016/j.anndiagpath.2023.152165 [doi] AB - PURPOSE: Diffuse large B-cell lymphoma (DLBCL) is a heterogeneous group of non-Hodgkin lymphoma, characterized by a variety of clinicopathological, histomorphological, immunophenotypic, and molecular genetic features. The subtype of DLBCL known as double-expressor lymphoma (DEL) is associated with an adverse prognosis when treated with R-CHOP. Our study aimed to investigate the clinicopathologic features of DEL and the prognostic roles of Myc rearrangement and C-Myc expression in DEL patients. PATIENTS AND METHODS: We conducted a retrospective study of 145 patients who were identified through fluorescence in situ hybridization (FISH) and immunohistochemistry (IHC) testing. RESULTS: We found that DEL patients were more likely to have a non-germinal center B-cell (GCB) subtype, stage III/IV disease, and a high International Prognostic Index (IPI) score. Our survival analysis indicated that Myc rearrangement and C-Myc expression were associated with poor prognosis. Although DEL patients with Myc rearrangement exhibited trends towards worse survival compared with patients without Myc rearrangement, the differences were not statistically significant (P = 0.4008). The median overall survival (OS) of DEL patients with >/=70 % C-Myc expression (DEL-C-Myc(high)) was 5 months. In the DEL-C-Myc(high) group, the non-GCB subtype showed nonsignificant trends towards poorer survival compared with the GCB subtype (P = 0.1042). CONCLUSION: In conclusion, our study shows that a cut-off of >/=70 % for C-Myc expression in DEL patients can improve risk stratification, and suggests that more intensive treatment regimens may be necessary to improve survival in this high-risk population. CI - Copyright (c) 2023 Elsevier Inc. All rights reserved. FAU - Wang, Xingyu AU - Wang X AD - Department of Pathology, Faculty of Basic Medicine, Chongqing Medical University, Chongqing, China; Molecular Medicine Diagnostic and Testing Center, Chongqing Medical University, Chongqing, China; Department of Pathology, The First Affiliated Hospital, Chongqing Medical University, Chongqing, China. FAU - He, Juan AU - He J AD - Department of Pathology, Faculty of Basic Medicine, Chongqing Medical University, Chongqing, China; Molecular Medicine Diagnostic and Testing Center, Chongqing Medical University, Chongqing, China; Department of Pathology, The First Affiliated Hospital, Chongqing Medical University, Chongqing, China. FAU - He, Hong AU - He H AD - Department of Internal Medicine, The First Branch, The First Affiliated Hospital, Chongqing Medical University, Chongqing, China. FAU - Shuai, Yuhan AU - Shuai Y AD - Laboratory of Neuropsycholinguistics, Chongqing Medical University, Chongqing, China. FAU - Wang, Lixin AU - Wang L AD - Department of Pathology, Faculty of Basic Medicine, Chongqing Medical University, Chongqing, China; Molecular Medicine Diagnostic and Testing Center, Chongqing Medical University, Chongqing, China; Department of Pathology, The First Affiliated Hospital, Chongqing Medical University, Chongqing, China. FAU - Li, Yuanxin AU - Li Y AD - Department of Pathology, Faculty of Basic Medicine, Chongqing Medical University, Chongqing, China; Molecular Medicine Diagnostic and Testing Center, Chongqing Medical University, Chongqing, China; Department of Pathology, The First Affiliated Hospital, Chongqing Medical University, Chongqing, China. FAU - Huang, Ying AU - Huang Y AD - Department of Pathology, The Second Affiliated Hospital, Chongqing Medical University, Chongqing, China. FAU - Yu, Kuai AU - Yu K AD - Department of Pathology, Faculty of Basic Medicine, Chongqing Medical University, Chongqing, China; Molecular Medicine Diagnostic and Testing Center, Chongqing Medical University, Chongqing, China; Department of Pathology, The First Affiliated Hospital, Chongqing Medical University, Chongqing, China; Department of Pathology, The Yongchuan Affiliated Hospital, Chongqing Medical University, Chongqing, China. FAU - Zhao, Min AU - Zhao M AD - Department of Pathology, Faculty of Basic Medicine, Chongqing Medical University, Chongqing, China; Molecular Medicine Diagnostic and Testing Center, Chongqing Medical University, Chongqing, China; Department of Pathology, The First Affiliated Hospital, Chongqing Medical University, Chongqing, China. FAU - Xie, Tao AU - Xie T AD - Department of Pathology, Faculty of Basic Medicine, Chongqing Medical University, Chongqing, China; Molecular Medicine Diagnostic and Testing Center, Chongqing Medical University, Chongqing, China; Department of Pathology, The First Affiliated Hospital, Chongqing Medical University, Chongqing, China; Department of Ultrasound, The Daxuecheng Affiliated Hospital, Chongqing Medical University, Chongqing, China. FAU - Li, Dan AU - Li D AD - Department of Pathology, Faculty of Basic Medicine, Chongqing Medical University, Chongqing, China; Molecular Medicine Diagnostic and Testing Center, Chongqing Medical University, Chongqing, China; Department of Pathology, The First Affiliated Hospital, Chongqing Medical University, Chongqing, China. Electronic address: lidancq@cqmu.edu.cn. LA - eng PT - Journal Article DEP - 20230524 PL - United States TA - Ann Diagn Pathol JT - Annals of diagnostic pathology JID - 9800503 RN - 0 (Proto-Oncogene Proteins c-myc) RN - 0 (Proto-Oncogene Proteins c-bcl-2) SB - IM MH - Humans MH - Retrospective Studies MH - In Situ Hybridization, Fluorescence MH - *Proto-Oncogene Proteins c-myc/genetics/metabolism MH - Prognosis MH - Proto-Oncogene Proteins c-bcl-2/genetics/metabolism MH - *Lymphoma, Large B-Cell, Diffuse/diagnosis/genetics MH - Antineoplastic Combined Chemotherapy Protocols/therapeutic use OTO - NOTNLM OT - Diffuse large B cell lymphoma OT - Double-expressor lymphoma OT - Overall survival COIS- Declaration of competing interest The authors have no conflicts of interest to declare. EDAT- 2023/06/23 01:10 MHDA- 2023/09/22 06:42 CRDT- 2023/06/22 18:10 PHST- 2023/03/12 00:00 [received] PHST- 2023/05/16 00:00 [revised] PHST- 2023/05/17 00:00 [accepted] PHST- 2023/09/22 06:42 [medline] PHST- 2023/06/23 01:10 [pubmed] PHST- 2023/06/22 18:10 [entrez] AID - S1092-9134(23)00063-1 [pii] AID - 10.1016/j.anndiagpath.2023.152165 [doi] PST - ppublish SO - Ann Diagn Pathol. 2023 Oct;66:152165. doi: 10.1016/j.anndiagpath.2023.152165. Epub 2023 May 24.