PMID- 27077767 OWN - NLM STAT- MEDLINE DCOM- 20170405 LR - 20220408 IS - 1607-8454 (Electronic) IS - 1024-5332 (Linking) VI - 21 IP - 7 DP - 2016 Aug TI - Mad2 overexpression is associated with high cell proliferation and reduced disease-free survival in primary gastrointestinal diffuse large B-cell lymphoma. PG - 399-403 LID - 10.1080/10245332.2015.1101970 [doi] AB - OBJECTIVES: Primary gastrointestinal diffuse large B-cell lymphoma (PGI-DLBCL) is a rare hematological malignancy with limited results on carcinogenesis and clinical characteristics. The aims of the current study were to examine mitotic arrest deficiency protein 2 (Mad2) expressions in PGI-DLBCL, and assess its association with Ki-67 expression, Helicobacter pylori (H. pylori) infection, BCL-6 gene rearrangement, and clinicopathological variables. METHODS: Cancer tissues from 38 PGI-DLBCL patients were examined for Mad2, Ki-67, and H. pylori expression by immunohistochemistry, using normal gastrointestinal tissues and nodal DLBCL as controls. BCL-6 gene translocation was analyzed by fluorescence in situ hybridization (FISH), and Mad2 expression status was evaluated along with clinicopathological characteristics. RESULTS: Mad2 expression was increased in PGI-DLBCL patients when compared with controls. The expression of Mad2 was 51.55 +/- 22.88% in PGI-DLBCL, which was higher than reactive lymph node (28.77 +/- 10.89%) and lymphoid nodule in normal gastrointestinal tissue (26.41 +/- 11.30%) (P = 0.002), while it was comparable to nodal DLBCL (57.23 +/- 20.79%) (P = 0.358). Mad2 overexpression had a positive correlation with Ki-67 proliferation index (r = 0.55, P = 0.01) in PGI-DLBCL, and patients with BCL-6 gene rearrangement had lower Mad2 expression (P = 0.032) than patients with intact BCL-6, while no relation was found between Mad2 expression and H. pylori infection. PGI-DLBCL patients with higher Mad2 expression had lower estimated disease-free survival (DFS) (17.10% vs. 53.00%) (P = 0.049). However, no correlation was found between Mad2 expression levels and overall survival (OS) (P = 0.443). CONCLUSIONS: Aberrant Mad2 expression was associated with cell proliferation and genetic instability, which may contribute to the carcinogenesis of PGI-DLBCL. Mad2 overexpression indicated a poor DFS and may be a potential biomarker for estimating prognosis for PGI-DLBCL patients. FAU - Chen, Fei AU - Chen F AD - a Department of Hematology , Zhongnan Hospital of Wuhan University , 169 Dong Hu Road, Wuhan 430071 , China. FAU - Liu, Shangqin AU - Liu S AD - a Department of Hematology , Zhongnan Hospital of Wuhan University , 169 Dong Hu Road, Wuhan 430071 , China. FAU - Zhou, Yi AU - Zhou Y AD - a Department of Hematology , Zhongnan Hospital of Wuhan University , 169 Dong Hu Road, Wuhan 430071 , China. FAU - Shen, Hui AU - Shen H AD - a Department of Hematology , Zhongnan Hospital of Wuhan University , 169 Dong Hu Road, Wuhan 430071 , China. FAU - Zuo, Xuelan AU - Zuo X AD - a Department of Hematology , Zhongnan Hospital of Wuhan University , 169 Dong Hu Road, Wuhan 430071 , China. LA - eng PT - Journal Article DEP - 20160316 PL - England TA - Hematology JT - Hematology (Amsterdam, Netherlands) JID - 9708388 RN - 0 (Ki-67 Antigen) RN - 0 (MAD2L1 protein, human) RN - 0 (Mad2 Proteins) SB - IM MH - Adult MH - Aged MH - Aged, 80 and over MH - Case-Control Studies MH - Cell Proliferation/physiology MH - Disease-Free Survival MH - Female MH - Gastrointestinal Neoplasms/*metabolism/pathology MH - Humans MH - In Situ Hybridization, Fluorescence MH - Ki-67 Antigen/biosynthesis/metabolism MH - Lymphoma, Large B-Cell, Diffuse/genetics/*metabolism/pathology MH - Mad2 Proteins/*biosynthesis/genetics/metabolism MH - Male MH - Middle Aged OTO - NOTNLM OT - B-cell lymphoma-6 gene (BCL-6) OT - Mitotic arrest deficiency protein 2 (Mad2) OT - Nuclear associated antigen (Ki-67) OT - Primary gastrointestinal diffuse large B-cell lymphoma (PGI-DLBCL) EDAT- 2016/04/15 06:00 MHDA- 2017/04/06 06:00 CRDT- 2016/04/15 06:00 PHST- 2016/04/15 06:00 [entrez] PHST- 2016/04/15 06:00 [pubmed] PHST- 2017/04/06 06:00 [medline] AID - 10.1080/10245332.2015.1101970 [doi] PST - ppublish SO - Hematology. 2016 Aug;21(7):399-403. doi: 10.1080/10245332.2015.1101970. Epub 2016 Mar 16.