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Akazawa Y, Hosono A, Yoshikawa T, Kaneda H, Nitani C, Hara J, Kinoshita Y, Kohashi K, Manabe A, Fukutani M, Wakabayashi M, Sato A, Shoda K, Shimomura M, Mizuno S, Nakamoto Y, Nakatsura T. Efficacy of the NCCV Cocktail-1 vaccine for refractory pediatric solid tumors: A phase I clinical trial. Cancer Sci 2019; 110:3650-3662. [PMID: 31571332 PMCID: PMC6890444 DOI: 10.1111/cas.14206] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2019] [Revised: 09/18/2019] [Accepted: 09/27/2019] [Indexed: 12/11/2022] Open
Abstract
Pediatric refractory solid tumors are aggressive malignant diseases, resulting in an extremely poor prognosis. KOC1, FOXM1, and KIF20A are cancer antigens that could be ideal targets for anticancer immunotherapy against pediatric refractory solid tumors with positive expression for these antigens. This nonrandomized, open‐label, phase I clinical trial evaluated the safety and efficacy of the NCCV Cocktail‐1 vaccine, which is a cocktail of cancer peptides derived from KOC1, FOXM1, and KIF20A, in patients with pediatric refractory solid tumors. Twelve patients with refractory pediatric solid tumors underwent NCCV Cocktail‐1 vaccination weekly by intradermal injections. The primary endpoint was the safety of the NCCV Cocktail‐1 vaccination, and the secondary endpoints were the immune response, as measured by interferon‐r enzyme‐linked immunospot assay, and the clinical outcomes including tumor response and progression‐free survival. The NCCV Cocktail‐1 vaccine was well tolerated. The clinical response of this trial showed that 4 patients had stable disease after 8 weeks and 2 patients maintained remission for >11 months. In 4, 8, and 5 patients, the NCCV Cocktail‐1 vaccine induced the sufficient number of peptide‐specific CTLs for KOC1, FOXM1, and KIF20A, respectively. Patients with high peptide‐specific CTL frequencies for KOC1, FOXM1, and KIF20A had better progression‐free survival than those with low frequencies. The findings of this clinical trial showed that the NCCV Cocktail‐1 vaccine could be a novel therapeutic strategy, with adequate effects against pediatric refractory solid tumors. Future large‐scale trials should evaluate the efficacy of the NCCV Cocktail‐1 vaccination.
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Affiliation(s)
- Yu Akazawa
- Division of Cancer Immunotherapy, Exploratory Oncology Research and Clinical Trial Center, National Cancer Center, Kashiwa, Japan.,Second Department of Internal Medicine, Faculty of Medical Sciences, University of Fukui, Eiheiji-cho, Japan
| | - Ako Hosono
- Division of Pediatric Oncology, National Cancer Center Hospital East, Kashiwa, Japan
| | - Toshiaki Yoshikawa
- Division of Cancer Immunotherapy, Exploratory Oncology Research and Clinical Trial Center, National Cancer Center, Kashiwa, Japan
| | - Hide Kaneda
- Division of Pediatric Oncology, National Cancer Center Hospital, Tokyo, Japan
| | - Chika Nitani
- Department of Pediatric Hematology and Oncology, Osaka City General Hospital, Osaka, Japan
| | - Junichi Hara
- Department of Pediatric Hematology and Oncology, Osaka City General Hospital, Osaka, Japan
| | - Yoshiaki Kinoshita
- Department of Pediatric Surgery, Kyushu University Hospital, Fukuoka, Japan
| | - Kenichi Kohashi
- Department of Anatomic Pathology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Atsushi Manabe
- Department of Pediatrics, Hokkaido University, Sapporo, Japan
| | - Miki Fukutani
- Clinical Research Support Office, National Cancer Center Hospital East, Kashiwa, Japan
| | - Masashi Wakabayashi
- Clinical Research Support Office, National Cancer Center Hospital East, Kashiwa, Japan
| | - Akihiro Sato
- Clinical Research Support Office, National Cancer Center Hospital East, Kashiwa, Japan
| | - Kayoko Shoda
- Division of Cancer Immunotherapy, Exploratory Oncology Research and Clinical Trial Center, National Cancer Center, Kashiwa, Japan
| | - Manami Shimomura
- Division of Cancer Immunotherapy, Exploratory Oncology Research and Clinical Trial Center, National Cancer Center, Kashiwa, Japan
| | - Shoichi Mizuno
- Division of Cancer Immunotherapy, Exploratory Oncology Research and Clinical Trial Center, National Cancer Center, Kashiwa, Japan
| | - Yasunari Nakamoto
- Second Department of Internal Medicine, Faculty of Medical Sciences, University of Fukui, Eiheiji-cho, Japan
| | - Tetsuya Nakatsura
- Division of Cancer Immunotherapy, Exploratory Oncology Research and Clinical Trial Center, National Cancer Center, Kashiwa, Japan
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