PMID- 30133055 OWN - NLM STAT- MEDLINE DCOM- 20181012 LR - 20210109 IS - 1349-7006 (Electronic) IS - 1347-9032 (Print) IS - 1347-9032 (Linking) VI - 109 IP - 10 DP - 2018 Oct TI - Prognostic impact of the tumor immune microenvironment in synovial sarcoma. PG - 3043-3054 LID - 10.1111/cas.13769 [doi] AB - The association between the immune status within the tumor microenvironment and prognosis in synovial sarcoma is not well understood. We aimed to investigate the tumor immune microenvironment and analyze its prognostic impact for patients with synovial sarcoma. A total of 36 primary patients who were treated in our institution were retrospectively evaluated. Infiltration of lymphocytes (CD4+, CD8+, and FOXP3+), CD163+ macrophages, and expression of human leukocyte antigen (HLA) class I and programmed death ligand 1 (PD-L1) were evaluated by immunohistochemistry. Moreover, we investigated PD-L1 and programmed death ligand 2 (PD-L2) mRNA expression in 19 of the 36 cases, using real-time PCR. The Kaplan-Meier method was used to estimate overall survival and progression-free survival. Infiltration of lymphocytes and macrophages varied among the patients. Furthermore, the expression of HLA class I was negative or downregulated in 11 specimens. No PD-L1 expression was observed using immunohistochemistry. Moreover, although PD-L1 mRNA expression was observed in 18 of 19 specimens, the expression level was low. A higher infiltration of CD8+ or FOXP3+ lymphocytes in patients was associated with a favorable overall survival. In addition, a higher infiltration of CD163+ macrophages indicated a significantly worse overall and progression-free survival. Infiltration of CD4+ lymphocytes, HLA class I, PD-L1, and PD-L2 expression were not associated with patient prognosis. This represents the first report investigating the tumor immune microenvironment as a prognostic factor in synovial sarcoma, indicating that CD163+ macrophages are associated with tumor progression. Our results underscore the clinical significance of the tumor immune microenvironment in synovial sarcoma. CI - (c) 2018 The Authors. Cancer Science published by John Wiley & Sons Australia, Ltd on behalf of Japanese Cancer Association. FAU - Oike, Naoki AU - Oike N AUID- ORCID: 0000-0003-3067-392X AD - Division of Orthopedic Surgery, Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan. FAU - Kawashima, Hiroyuki AU - Kawashima H AD - Division of Orthopedic Surgery, Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan. FAU - Ogose, Akira AU - Ogose A AD - Division of Orthopedic Surgery, Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan. AD - Department of Orthopedic Surgery, Uonuma Kikan Hospital, Niigata, Japan. FAU - Hotta, Tetsuo AU - Hotta T AD - Division of Orthopedic Surgery, Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan. FAU - Hatano, Hiroshi AU - Hatano H AD - Department of Orthopedic Surgery, Niigata Cancer Center Hospital, Niigata, Japan. FAU - Ariizumi, Takashi AU - Ariizumi T AD - Division of Orthopedic Surgery, Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan. FAU - Sasaki, Taro AU - Sasaki T AD - Department of Orthopedic Surgery, Niigata Cancer Center Hospital, Niigata, Japan. FAU - Yamagishi, Tetsuro AU - Yamagishi T AD - Division of Orthopedic Surgery, Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan. FAU - Umezu, Hajime AU - Umezu H AD - Department of Pathology, Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan. FAU - Endo, Naoto AU - Endo N AD - Division of Orthopedic Surgery, Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan. LA - eng PT - Journal Article DEP - 20180916 PL - England TA - Cancer Sci JT - Cancer science JID - 101168776 RN - 0 (B7-H1 Antigen) RN - 0 (Biomarkers, Tumor) RN - 0 (CD274 protein, human) RN - 0 (Histocompatibility Antigens Class I) SB - IM MH - Adolescent MH - Adult MH - Aged MH - B7-H1 Antigen/immunology/metabolism MH - Biomarkers, Tumor/*immunology MH - Biopsy MH - Cell Line, Tumor MH - Child MH - Disease-Free Survival MH - Female MH - Histocompatibility Antigens Class I/immunology/metabolism MH - Humans MH - Kaplan-Meier Estimate MH - Lymphocytes, Tumor-Infiltrating/*immunology MH - Macrophages/*immunology MH - Male MH - Middle Aged MH - Neoplasm Staging MH - Prognosis MH - Retrospective Studies MH - Sarcoma, Synovial/*immunology/mortality/pathology/surgery MH - Tumor Microenvironment/*immunology MH - Young Adult PMC - PMC6172059 OTO - NOTNLM OT - CD163+ macrophage OT - prognosis OT - programmed death ligand 1 OT - synovial sarcoma OT - tumor immune microenvironment EDAT- 2018/08/23 06:00 MHDA- 2018/10/13 06:00 PMCR- 2018/10/01 CRDT- 2018/08/23 06:00 PHST- 2018/05/01 00:00 [received] PHST- 2018/08/07 00:00 [revised] PHST- 2018/08/08 00:00 [accepted] PHST- 2018/08/23 06:00 [pubmed] PHST- 2018/10/13 06:00 [medline] PHST- 2018/08/23 06:00 [entrez] PHST- 2018/10/01 00:00 [pmc-release] AID - CAS13769 [pii] AID - 10.1111/cas.13769 [doi] PST - ppublish SO - Cancer Sci. 2018 Oct;109(10):3043-3054. doi: 10.1111/cas.13769. Epub 2018 Sep 16.