PMID- 32500232 OWN - NLM STAT- MEDLINE DCOM- 20201022 LR - 20201022 IS - 1432-0851 (Electronic) IS - 0340-7004 (Print) IS - 0340-7004 (Linking) VI - 69 IP - 11 DP - 2020 Nov TI - Exploratory open-label clinical study to determine the S-588410 cancer peptide vaccine-induced tumor-infiltrating lymphocytes and changes in the tumor microenvironment in esophageal cancer patients. PG - 2247-2257 LID - 10.1007/s00262-020-02619-3 [doi] AB - Cancer vaccines induce cancer-specific T-cells capable of eradicating cancer cells. The impact of cancer peptide vaccines (CPV) on the tumor microenvironment (TME) remains unclear. S-588410 is a CPV comprising five human leukocyte antigen (HLA)-A*24:02-restricted peptides derived from five cancer testis antigens, DEPDC1, MPHOSPH1, URLC10, CDCA1 and KOC1, which are overexpressed in esophageal cancer. This exploratory study investigated the immunologic mechanism of action of subcutaneous S-588410 emulsified with MONTANIDE ISA51VG adjuvant (median: 5 doses) by analyzing the expression of immune-related molecules, cytotoxic T-lymphocyte (CTL) response and T-lymphocytes bearing peptide-specific T-cell receptor (TCR) sequencing in tumor tissue or blood samples from 15 participants with HLA-A*24:02-positive esophageal cancer. Densities of CD8+, CD8+ Granzyme B+, CD8+ programmed death-1-positive (PD-1+) and programmed death-ligand 1-positive (PD-L1+) cells were higher in post- versus pre-vaccination tumor tissue. CTL response was induced in all patients for at least one of five peptides. The same sequences of peptide-specific TCRs were identified in post-vaccination T-lymphocytes derived from both tumor tissue and blood, suggesting that functional peptide-specific CTLs infiltrate tumor tissue after vaccination. Twelve (80%) participants had treatment-related adverse events (AEs). Injection site reaction was the most frequently reported AE (grade 1, n = 1; grade 2, n = 11). In conclusion, S-588410 induces a tumor immune response in esophageal cancer. Induction of CD8+ PD-1+ tumor-infiltrating lymphocytes and PD-L1 expression in the TME by vaccination suggests S-588410 in combination with anti-PD-(L)1 antibodies may offer a clinically useful therapy.Trial registration UMIN-CTR registration identifier: UMIN000023324. FAU - Daiko, H AU - Daiko H AUID- ORCID: 0000-0002-9562-2966 AD - Esophageal Surgery Division, National Cancer Center Hospital, 5-1-1, Tsukiji, Chuo-ku, Tokyo, 104-0045, Japan. hdaiko@ncc.go.jp. FAU - Marafioti, T AU - Marafioti T AD - Department of Cellular Pathology, University College London Hospital, London, UK. FAU - Fujiwara, T AU - Fujiwara T AD - Department of Gastroenterological Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan. FAU - Shirakawa, Y AU - Shirakawa Y AD - Department of Gastroenterological Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan. FAU - Nakatsura, T AU - Nakatsura T AD - Division of Cancer Immunotherapy, Exploratory Oncology Research and Clinical Trial Center, National Cancer Center, Kashiwa, Japan. FAU - Kato, K AU - Kato K AD - Gastrointestinal Medical Oncology Division, National Cancer Center Hospital, Tokyo, Japan. FAU - Puccio, I AU - Puccio I AD - Department of Cellular Pathology, University College London Hospital, London, UK. FAU - Hikichi, T AU - Hikichi T AD - R&D Department, Cancer Precision Medicine, Inc., Kawasaki, Japan. FAU - Yoshimura, S AU - Yoshimura S AD - R&D Department, Cancer Precision Medicine, Inc., Kawasaki, Japan. FAU - Nakagawa, T AU - Nakagawa T AD - Drug Discovery and Disease Research Laboratory, Shionogi & Co., Ltd., Toyonaka, Japan. FAU - Furukawa, M AU - Furukawa M AD - Biostatistics Department, Shionogi & Co., Ltd., Osaka, Japan. FAU - Stoeber, K AU - Stoeber K AD - Business Development, Shionogi & Co., Ltd., London, UK. FAU - Nagira, M AU - Nagira M AD - Drug Discovery and Disease Research Laboratory, Shionogi & Co., Ltd., Toyonaka, Japan. FAU - Ide, N AU - Ide N AD - Project Management Department, Shionogi & Co., Ltd., Osaka, Japan. FAU - Kojima, T AU - Kojima T AD - Department of Gastroenterology and Gastrointestinal Oncology, National Cancer Center Hospital East, Kashiwa, Japan. LA - eng PT - Clinical Trial PT - Journal Article PT - Multicenter Study DEP - 20200604 PL - Germany TA - Cancer Immunol Immunother JT - Cancer immunology, immunotherapy : CII JID - 8605732 RN - 0 (Antigens, Neoplasm) RN - 0 (Cancer Vaccines) RN - 0 (HLA-A*24:02 antigen) RN - 0 (HLA-A24 Antigen) RN - 0 (Vaccines, Subunit) SB - IM MH - Aged MH - Antigens, Neoplasm/immunology MH - Cancer Vaccines/*therapeutic use MH - Esophageal Neoplasms/*drug therapy/*immunology MH - Female MH - HLA-A24 Antigen/immunology MH - Humans MH - Lymphocytes, Tumor-Infiltrating/drug effects/*immunology MH - Male MH - Middle Aged MH - T-Lymphocytes, Cytotoxic/drug effects/*immunology MH - Tumor Microenvironment/drug effects/immunology MH - Vaccines, Subunit/therapeutic use PMC - PMC7568713 OTO - NOTNLM OT - Cancer peptide vaccine OT - Esophageal cancer OT - PD-1 OT - PD-L1 OT - Tumor-infiltrating lymphocytes COIS- TK has received travel support from Shionogi & Co., Ltd. in relation to this study and grants from Ono Pharmaceuticals, Merck, Sharpe & Dohme, Oncolys BioPharma, Astellas Amgen BioPharma and Chugai, outside the submitted work. KK has received grants from Ono Pharmaceuticals, Merck & Co. and Merck Serono. T Nakatsura undertakes advisory services for Shionogi Co., Ltd. YS has received travel support from Shionogi & Co., Ltd in relation to this study. TM has undertaken speaker's bureau for Ventana/Roche and Gilead Sciences Ltd., receives royalties relating to patents from DAKO Agilent and has received travel support from Ventana/Roche. TM and IP have a patent pending for a multiplex IHC protocol. TH and SY are employees of Cancer Precision Medicine, Inc., and hold patents that have been licensed to OncoTherapy Science, Inc. T Nakagawa, MF, MN, KS and NI are employees of Shionogi Co., Ltd. HD and TF declare no conflicts of interest. EDAT- 2020/06/06 06:00 MHDA- 2020/10/23 06:00 PMCR- 2020/06/04 CRDT- 2020/06/06 06:00 PHST- 2020/02/27 00:00 [received] PHST- 2020/05/20 00:00 [accepted] PHST- 2020/06/06 06:00 [pubmed] PHST- 2020/10/23 06:00 [medline] PHST- 2020/06/06 06:00 [entrez] PHST- 2020/06/04 00:00 [pmc-release] AID - 10.1007/s00262-020-02619-3 [pii] AID - 2619 [pii] AID - 10.1007/s00262-020-02619-3 [doi] PST - ppublish SO - Cancer Immunol Immunother. 2020 Nov;69(11):2247-2257. doi: 10.1007/s00262-020-02619-3. Epub 2020 Jun 4.