PMID- 34141867 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20210619 IS - 2372-7705 (Print) IS - 2372-7705 (Electronic) IS - 2372-7705 (Linking) VI - 21 DP - 2021 Jun 25 TI - Association of IDH mutation and 1p19q co-deletion with tumor immune microenvironment in lower-grade glioma. PG - 288-302 LID - 10.1016/j.omto.2021.04.010 [doi] AB - Although the successful clinical trials of immunotherapy show promising strategies for many cancers, its application in glioma has lagged in comparison with the progress seen in other cancers. Both isocitrate dehydrogenase (IDH) mutations and 1p/19q codeletions are critical molecular alterations affecting therapeutic response in lower-grade glioma (LGG). The systematic and comprehensive characterization of the immunological phenotypes with different molecular subtypes is key to improving our understanding and application of immunotherapies in LGG. Here, we collected the RNA-sequencing, somatic mutation, and clinical data from 1,052 patients from The Cancer Genome Atlas and Chinese Glioma Genome Atlas and stratified patients into three genetic subgroups: IDH mutations with 1p/19q codeletions (IDH mut-codel), IDH mutations without 1p/19q codeletions (IDH mut-noncodel), and IDH wild-type. Our evaluations revealed that IDH mutations and 1p/19q codeletions were associated with distinct immunological tumor microenvironments in LGG. In addition, immune cell infiltration, the expression of immune checkpoint and human leukocyte antigen (HLA) gene, and the activity of immune signaling pathways shared gradual increase from IDH mut-codel to IDH wild-type. We further constructed and validated an immune-related prognostic signature that presented high value in predicting the overall survival time in LGG. In conclusion, our study may provide valuable information for immunotherapy strategies in LGG patients. CI - (c) 2021 The Authors. FAU - Lin, Wanzun AU - Lin W AD - Department of Radiation Oncology, Shanghai Proton and Heavy Ion Center, Fudan University Cancer Hospital, Shanghai 201321, China. AD - Shanghai Engineering Research Center of Proton and Heavy Ion Radiation Therapy, Shanghai 201321, China. FAU - Qiu, Xianxin AU - Qiu X AD - Shanghai Engineering Research Center of Proton and Heavy Ion Radiation Therapy, Shanghai 201321, China. AD - Department of Radiation Oncology, Shanghai Proton and Heavy Ion Center, Shanghai, China. FAU - Sun, Pian AU - Sun P AD - Department of Radiation Oncology, Shanghai Proton and Heavy Ion Center, Fudan University Cancer Hospital, Shanghai 201321, China. AD - Shanghai Engineering Research Center of Proton and Heavy Ion Radiation Therapy, Shanghai 201321, China. FAU - Ye, Yuling AU - Ye Y AD - Department of Radiation Oncology, Fujian Cancer Hospital and Fujian Medical University Cancer Hospital, Fuzhou 35005, China. FAU - Huang, Qingting AU - Huang Q AD - Shanghai Engineering Research Center of Proton and Heavy Ion Radiation Therapy, Shanghai 201321, China. AD - Department of Radiation Oncology, Shanghai Proton and Heavy Ion Center, Shanghai, China. FAU - Kong, Lin AU - Kong L AD - Department of Radiation Oncology, Shanghai Proton and Heavy Ion Center, Fudan University Cancer Hospital, Shanghai 201321, China. FAU - Lu, Jiade J AU - Lu JJ AD - Department of Radiation Oncology, Shanghai Proton and Heavy Ion Center, Fudan University Cancer Hospital, Shanghai 201321, China. AD - Shanghai Engineering Research Center of Proton and Heavy Ion Radiation Therapy, Shanghai 201321, China. LA - eng PT - Journal Article DEP - 20210429 PL - United States TA - Mol Ther Oncolytics JT - Molecular therapy oncolytics JID - 101666776 PMC - PMC8167204 OTO - NOTNLM OT - 1p/19q codeletions OT - IDH mutations OT - bioinformatics OT - lower-grade glioma OT - molecular subtypes OT - tumor immune microenvironment COIS- The authors declare no competing interests. EDAT- 2021/06/19 06:00 MHDA- 2021/06/19 06:01 PMCR- 2021/04/29 CRDT- 2021/06/18 06:50 PHST- 2021/01/17 00:00 [received] PHST- 2021/04/24 00:00 [accepted] PHST- 2021/06/18 06:50 [entrez] PHST- 2021/06/19 06:00 [pubmed] PHST- 2021/06/19 06:01 [medline] PHST- 2021/04/29 00:00 [pmc-release] AID - S2372-7705(21)00060-7 [pii] AID - 10.1016/j.omto.2021.04.010 [doi] PST - epublish SO - Mol Ther Oncolytics. 2021 Apr 29;21:288-302. doi: 10.1016/j.omto.2021.04.010. eCollection 2021 Jun 25.