PMID- 28219220 OWN - NLM STAT- MEDLINE DCOM- 20180522 LR - 20200717 IS - 0253-2727 (Print) IS - 2707-9740 (Electronic) IS - 0253-2727 (Linking) VI - 38 IP - 1 DP - 2017 Jan 14 TI - [Clinical significance of expressions of EVI1 and BRE genes in 47 acute leukemia patients with MLL rearrangement]. PG - 22-27 LID - 10.3760/cma.j.issn.0253-2727.2017.01.005 [doi] AB - Objective: To investigate the overexpression frequencies of BRE and EVI1, the correlation between BRE and EVI1 expressions and their possible clinical implications in 11q23/MLL rearrangement acute leukemia. Methods: Cytogenetic examination of bone marrow cells was performed by short-term culture method. R-banding technique was used for karyotype analysis. 47 patients were detected by interphase fluorescence in situ hybridization (FISH) with dual-color break apart MLL probe. The expressions of EVI1 and BRE genes were detected by real time quantitative reverse transcription polymerase chain reaction (RQ-PCR) . The correlation and prognostic significance were statistically tested. Results: 11q23/MLL rearrangements were confirmed by karyotyping and FISH, respectively in 47 patients. According to immunophenotypic analyses of 37 patients, 5 patients showed positive for CD19, CD79a or CD10, 1 for CD7; the others for CD33, CD13, CD14 and CD15, and 16 of them for CD34. Of the 47 patients, 18 patients showed EVI1 overexpression and most of them presented with t (6;11) and M(4)/M(5). The EVI1 expression was high in t (6;11) or t (9;11) subgroup comparable with levels observed in normal subgroup (P=0.038, 0.022, respectively) . 15 patients showed high BRE expression, and most of them presented with t (9;11) and M(4)/M(5). High BRE expression was found in t (4;11) , t (6;11) , t (9;11) and t (11;19) subgroups, respectively by comparing with normal subgroup. The BRE expression was higher in t (4;11) (P=0.004) or t (9;11) (P=0.012) subgroup than in t (6;11) subgroup. Patients with EVI1 overexpression had a short survival compared with those with low EVI1 expression (P=0.049) and it also did in t (9;11) subgroup (P=0.024) . Patients with t (9;11) and high BRE expression had a long survival compared with those with t (9;11) and low BRE expression (P=0.024) . Conclusion: The EVI1 overexpression was significantly frequent in acute leukemia patients with 11q23/MLL rearranged, especially within t (6;11) subgroup and M(4)/M(5), which was associated with an inferior outcome. High BRE expression was observed frequently in 11q23/MLL-rearranged acute leukemia especially within t (9;11) subgroup and M(5). FAU - Gong, Y L AU - Gong YL AD - Department of Hematology, The First Affiliated Hospital of Soochow University, Jiangsu Institute of Hematology, Key Laboratory of Thrombosis and Homeostasis, Suzhou 215006, China. FAU - Zhang, J R AU - Zhang JR FAU - Zhang, J AU - Zhang J FAU - Bai, S X AU - Bai SX FAU - Cen, J N AU - Cen JN FAU - Shen, H J AU - Shen HJ FAU - Chou, H Y AU - Chou HY FAU - Chen, S N AU - Chen SN FAU - Pan, J L AU - Pan JL LA - chi PT - Journal Article PL - China TA - Zhonghua Xue Ye Xue Za Zhi JT - Zhonghua xue ye xue za zhi = Zhonghua xueyexue zazhi JID - 8212398 RN - 0 (KMT2A protein, human) RN - 149025-06-9 (Myeloid-Lymphoid Leukemia Protein) RN - EC 2.1.1.43 (Histone-Lysine N-Methyltransferase) SB - IM MH - Acute Disease MH - Bone Marrow Cells MH - Chromosome Banding MH - *Chromosomes, Human, Pair 11 MH - Gene Rearrangement MH - Histone-Lysine N-Methyltransferase MH - Humans MH - Immunophenotyping MH - In Situ Hybridization, Fluorescence MH - Interphase MH - Karyotyping MH - *Leukemia, Myeloid, Acute MH - Myeloid-Lymphoid Leukemia Protein MH - Prognosis MH - Real-Time Polymerase Chain Reaction PMC - PMC7348406 OTO - NOTNLM OT - Gene rearrangement, MLL OT - Gene, BRE OT - Gene, EVI1 OT - In situ hybridization, fluorescence OT - Leukemia, acute EDAT- 2017/02/22 06:00 MHDA- 2018/05/23 06:00 PMCR- 2017/01/01 CRDT- 2017/02/22 06:00 PHST- 2017/02/22 06:00 [entrez] PHST- 2017/02/22 06:00 [pubmed] PHST- 2018/05/23 06:00 [medline] PHST- 2017/01/01 00:00 [pmc-release] AID - cjh-38-01-022 [pii] AID - 10.3760/cma.j.issn.0253-2727.2017.01.005 [doi] PST - ppublish SO - Zhonghua Xue Ye Xue Za Zhi. 2017 Jan 14;38(1):22-27. doi: 10.3760/cma.j.issn.0253-2727.2017.01.005.