PMID- 32391625 OWN - NLM STAT- MEDLINE DCOM- 20201207 LR - 20220603 IS - 1349-7006 (Electronic) IS - 1347-9032 (Print) IS - 1347-9032 (Linking) VI - 111 IP - 8 DP - 2020 Aug TI - Efficacy of immunotherapy targeting the neoantigen derived from epidermal growth factor receptor T790M/C797S mutation in non-small cell lung cancer. PG - 2736-2746 LID - 10.1111/cas.14451 [doi] AB - Lung cancer is the leading cause of cancer-related deaths worldwide. Epidermal growth factor receptor-tyrosine kinase inhibitors (EGFR-TKI) often have good clinical activity against non-small cell lung cancer (NSCLC) with activating EGFR mutations. Osimertinib, which is a third-generation EGFR-TKI, has a clinical effect even on NSCLC harboring the threonine to methionine change at codon 790 of EGFR (EGFR T790M) mutation that causes TKI resistance. However, most NSCLC patients develop acquired resistance to osimertinib within approximately 1 year, and 40% of these patients have the EGFR T790M and cysteine to serine change at codon 797 (C797S) mutations. Therefore, there is an urgent need for the development of novel treatment strategies for NSCLC patients with the EGFR T790M/C797S mutation. In this study, we identified the EGFR T790M/C797S mutation-derived peptide (790-799) (MQLMPFGSLL) that binds the human leukocyte antigen (HLA)-A*02:01, and successfully established EGFR T790M/C797S-peptide-specific CTL clones from human PBMC of HLA-A2 healthy donors. One established CTL clone demonstrated adequate cytotoxicity against T2 cells pulsed with the EGFR T790M/C797S peptide. This CTL clone also had high reactivity against cancer cells that expressed an endogenous EGFR T790M/C797S peptide using an interferon-gamma (IFN-gamma) enzyme-linked immunospot (ELISPOT) assay. In addition, we demonstrated using a mouse model that EGFR T790M/C797S peptide-specific CTL were induced by EGFR T790M/C797S peptide vaccine in vivo. These findings suggest that an immunotherapy targeting a neoantigen derived from EGFR T790M/C797S mutation could be a useful novel therapeutic strategy for NSCLC patients with EGFR-TKI resistance, especially those resistant to osimertinib. CI - (c) 2020 The Authors. Cancer Science published by John Wiley & Sons Australia, Ltd on behalf of Japanese Cancer Association. FAU - Akazawa, Yu AU - Akazawa Y AUID- ORCID: 0000-0002-8030-7373 AD - Division of Cancer Immunotherapy, Exploratory Oncology Research and Clinical Trial Center, National Cancer Center, Kashiwa, Japan. AD - Second Department of Internal Medicine, Faculty of Medical Sciences, University of Fukui, Fukui, Japan. FAU - Saito, Yuki AU - Saito Y AD - Division of Cancer Immunotherapy, Exploratory Oncology Research and Clinical Trial Center, National Cancer Center, Kashiwa, Japan. FAU - Yoshikawa, Toshiaki AU - Yoshikawa T AD - Division of Cancer Immunotherapy, Exploratory Oncology Research and Clinical Trial Center, National Cancer Center, Kashiwa, Japan. FAU - Saito, Keigo AU - Saito K AD - Division of Cancer Immunotherapy, Exploratory Oncology Research and Clinical Trial Center, National Cancer Center, Kashiwa, Japan. FAU - Nosaka, Kazuto AU - Nosaka K AD - Division of Cancer Immunotherapy, Exploratory Oncology Research and Clinical Trial Center, National Cancer Center, Kashiwa, Japan. AD - Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, Nagoya, Japan. FAU - Shimomura, Manami AU - Shimomura M AD - Division of Cancer Immunotherapy, Exploratory Oncology Research and Clinical Trial Center, National Cancer Center, Kashiwa, Japan. FAU - Mizuno, Shoichi AU - Mizuno S AD - Division of Cancer Immunotherapy, Exploratory Oncology Research and Clinical Trial Center, National Cancer Center, Kashiwa, Japan. FAU - Nakamoto, Yasunari AU - Nakamoto Y AD - Second Department of Internal Medicine, Faculty of Medical Sciences, University of Fukui, Fukui, Japan. FAU - Nakatsura, Tetsuya AU - Nakatsura T AUID- ORCID: 0000-0003-3918-2385 AD - Division of Cancer Immunotherapy, Exploratory Oncology Research and Clinical Trial Center, National Cancer Center, Kashiwa, Japan. LA - eng GR - 25-7/National Cancer Center Research and Development Fund/ GR - 28-A-8/National Cancer Center Research and Development Fund/ PT - Journal Article DEP - 20200618 PL - England TA - Cancer Sci JT - Cancer science JID - 101168776 RN - 0 (Acrylamides) RN - 0 (Aniline Compounds) RN - 0 (Antigens, Neoplasm) RN - 0 (Cancer Vaccines) RN - 0 (Epitopes, T-Lymphocyte) RN - 0 (HLA-A*02:01 antigen) RN - 0 (HLA-A2 Antigen) RN - 0 (Protein Kinase Inhibitors) RN - 0 (Vaccines, Subunit) RN - 3C06JJ0Z2O (osimertinib) RN - EC 2.7.10.1 (EGFR protein, human) RN - EC 2.7.10.1 (ErbB Receptors) SB - IM MH - Acrylamides/pharmacology/therapeutic use MH - Aniline Compounds/pharmacology/therapeutic use MH - Animals MH - Antigens, Neoplasm/administration & dosage/genetics/immunology MH - Cancer Vaccines/*administration & dosage/genetics/immunology MH - Carcinoma, Non-Small-Cell Lung/*drug therapy/genetics/immunology MH - Cell Line, Tumor MH - Drug Resistance, Neoplasm/genetics/immunology MH - Epitopes, T-Lymphocyte/genetics/immunology MH - ErbB Receptors/antagonists & inhibitors/genetics/immunology MH - HLA-A2 Antigen/genetics/immunology MH - Humans MH - Immunotherapy/*methods MH - Lung Neoplasms/*drug therapy/genetics/immunology MH - Mice MH - Mice, Knockout MH - Protein Kinase Inhibitors/pharmacology/therapeutic use MH - T-Lymphocytes, Cytotoxic/immunology MH - Vaccines, Subunit/administration & dosage/genetics/immunology PMC - PMC7419036 OTO - NOTNLM OT - C797S mutation OT - EGFR T790M OT - immunotherapy OT - neoantigen OT - non-small cell lung cancer COIS- The authors declare no conflict of interest. EDAT- 2020/05/12 06:00 MHDA- 2020/12/15 06:00 PMCR- 2020/08/01 CRDT- 2020/05/12 06:00 PHST- 2020/02/14 00:00 [received] PHST- 2020/04/03 00:00 [revised] PHST- 2020/04/06 00:00 [accepted] PHST- 2020/05/12 06:00 [pubmed] PHST- 2020/12/15 06:00 [medline] PHST- 2020/05/12 06:00 [entrez] PHST- 2020/08/01 00:00 [pmc-release] AID - CAS14451 [pii] AID - 10.1111/cas.14451 [doi] PST - ppublish SO - Cancer Sci. 2020 Aug;111(8):2736-2746. doi: 10.1111/cas.14451. Epub 2020 Jun 18.