You have accessJournal of UrologyKidney Cancer: Basic Research & Pathophysiology II (MP18)1 Apr 2020MP18-10 CHRONIC INFLAMMATION-DERIVED IMMUNOSUPPRESSIVE STATUS INCLUDING MYELOID DERIVED SUPPRESSOR CELL, T CELL EXHAUSTION OR PD-L1 EXPRESSION IS COMMON IN NON-CLEAR CELL RENAL CELL CARCINOMA Hiroaki Matsumoto*, Kazuhiro Nagao, Jun-Ichi Mori, Sho Ozawa, Masahiro Samoto, Ryo Inoue, Yoshiaki Yamamoto, Seiji Yano, Hiroshi Hirata, Tomoyuki Shimabukuro, Yoji Nagashima, and Hideyasu Matsuyama Hiroaki Matsumoto*Hiroaki Matsumoto* More articles by this author , Kazuhiro NagaoKazuhiro Nagao More articles by this author , Jun-Ichi MoriJun-Ichi Mori More articles by this author , Sho OzawaSho Ozawa More articles by this author , Masahiro SamotoMasahiro Samoto More articles by this author , Ryo InoueRyo Inoue More articles by this author , Yoshiaki YamamotoYoshiaki Yamamoto More articles by this author , Seiji YanoSeiji Yano More articles by this author , Hiroshi HirataHiroshi Hirata More articles by this author , Tomoyuki ShimabukuroTomoyuki Shimabukuro More articles by this author , Yoji NagashimaYoji Nagashima More articles by this author , and Hideyasu MatsuyamaHideyasu Matsuyama More articles by this author View All Author Informationhttps://doi.org/10.1097/JU.0000000000000843.010AboutPDF ToolsAdd to favoritesDownload CitationsTrack CitationsPermissionsReprints ShareFacebookLinked InTwitterEmail Abstract INTRODUCTION AND OBJECTIVE: Non-clear cell renal cell carcinoma (ncRCC) is a rare entity with heterogeneous pathology, and few information about the effect of immune checkpoint inhibitor (ICI). We aimed to investigate the status of PD-L1, VEGFR, or chronic inflammation markers and to correlate with pathological and prognostic outcomes in ncRCC. METHODS: In January 2005 to December 2014, 139 cases of ncRCC had been treated by radical or partial nephrectomy and were retrospectively collected from multi-institutional database (Yamaguchi Uro-Oncology group), and analyzed the expression status of PD-1, PD-L1, VEGFR2, Arginase-1, and CD8 positivity by immunohistochemical staining (ICH). All pathological diagnosis was re-assessed by one central pathologist (YN). RESULTS: Mean age, and pathological stage (I/II/III/IV) was 65.6, and 87/22/23/4, respectively. Out of 127 cases with pathologically confirmed, papillary RCC, chromophobe, sarcomatoid, and other types were 51 (41%), 31 (24%), 21 (16.5%), respectively. PD-L1 expression and VEGFR2 expression was present in 11 (9%), and 54 (44%), respectively. VEGFR2 expression was significantly associated with durable response (CR/PR/SD) of VEGF-TKI (p=0.0195). Higher PD-1 expression was statistically correlated with neutrophil-lymphocyte ratio (NLR, p=0.0002), leucocyte count (p=0.0189), Glasgow prognostic score (p=0.0038), tumor-infiltrating CD8 positivity (p= 0.0219). Higher Arginase expression was present in 25 (21%) and significantly associated with PS (p=0.0003), leucocyte count (p=0.0007), neutrophil count (p<0.0001), NLR (p<0.0001), VEGFR2 expression (p=0.0161). Concerning patient outcome, sarcomatoid subtype, CRP, NLR, PD-L1 expression was significantly associated with OS in the univariate analysis. Multivariate analysis proved PD-L1 to the sole independent prognostic factor (P-0.005, HR:6.72, 95% CI: 1.55-21.14). CONCLUSIONS: These data suggest that tumor-infiltrated T cell exhaustion and activation of MDSC is present, presumably induced by chronic inflammation in ncRCC. NLR may become surrogate for T cell exhaustion. Modest VEGFR2 and PD-L1 expression indicate combination therapy with ipilimumab/nivolumab, or axitinib/pembrolizumab seems to be reasonable strategy for the treatment of ncRCC. Source of Funding: none © 2020 by American Urological Association Education and Research, Inc.FiguresReferencesRelatedDetails Volume 203Issue Supplement 4April 2020Page: e239-e239 Advertisement Copyright & Permissions© 2020 by American Urological Association Education and Research, Inc.MetricsAuthor Information Hiroaki Matsumoto* More articles by this author Kazuhiro Nagao More articles by this author Jun-Ichi Mori More articles by this author Sho Ozawa More articles by this author Masahiro Samoto More articles by this author Ryo Inoue More articles by this author Yoshiaki Yamamoto More articles by this author Seiji Yano More articles by this author Hiroshi Hirata More articles by this author Tomoyuki Shimabukuro More articles by this author Yoji Nagashima More articles by this author Hideyasu Matsuyama More articles by this author Expand All Advertisement PDF downloadLoading ...
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