Research theme for competitive and other funds (6)：
2015 - 2019 Identification of host genetic factors associated with response to a HB vaccination
2013 - 2015 Search for new risk gene for chronic hepatitis B
2009 - 2010 Elucidation of the mechanisms that malaria parasites evade from the host's immune system by polymorphism and duplication of immune target genes in malaria species
2008 - 2010 Genome sequencing of the Plasmodium vivax-related monkey malaria parasite, P. cynomolgi, by the massive sequencing system
2004 - 2008 Evolution by loss of genes that have become redundant in relation to changing environments
2006 - 2007 Molecular evolution of antigen polymoiphism of modem malaria parasite populations
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Papers (41)：
Saeideh Ashouri, Seik-Soon Khor, Yuki Hitomi, Hiromi Sawai, Nao Nishida, Masaya Sugiyama, Yosuke Kawai, Nawarat Posuwan, Pisit Tangkijvanich, Piyawat Komolmit, et al. Genome-Wide Association Study for Chronic Hepatitis B Infection in the Thai Population. Frontiers in genetics. 2022. 13. 887121-887121
Masataka Kikuchi, Kaori Kobayashi, Nao Nishida, Hiromi Sawai, Masaya Sugiyama, Masashi Mizokami, Katsushi Tokunaga, Akihiro Nakaya. Genome-wide copy number variation analysis of hepatitis B infection in a Japanese population. Human Genome Variation. 2021. 8. 1
Hideto Kawaratani, Hiromi Sawai, Masaya Onishi, Tomomi Kogiso, Noritomo Shimada, Haruki Uojima, Tomoaki Nakajima, Naoki Matsumoto, Kenichi Ikejima, Toru Ishikawa, et al. A genome-wide association study identifying SVEP1 variant as a predictor of response to tolvaptan for cirrhotic ascites. Liver international : official journal of the International Association for the Study of the Liver. 2021. 41. 12. 2944-2953
Nao Nishida, Masaya Sugiyama, Jun Ohashi, Yosuke Kawai, Seik-Soon Khor, Sohji Nishina, Kazumi Yamasaki, Hirohisa Yazaki, Kaori Okudera, Akihiro Tamori, et al. Importance of HBsAg recognition by HLA molecules as revealed by responsiveness to different hepatitis B vaccines. Scientific reports. 2021. 11. 1. 3703-3703
Nao Nishida, Masaya Sugiyama, Hiromi Sawai, Sohji Nishina, Aiko Sakai, Keisuke Kakisaka, Keisuke Hino, Ryo Sumazaki, Yasuhiro Takikawa, Kazumoto Murata, et al. HLA-DRB1-DQB1 haplotypes and BTNL2 gene associate with response to a hepatitis B vaccine. HEPATOLOGY. 2017. 66. 796A-797A
Katsushi Tokunaga, Nao Nishida, Hiromi Sawai, Seik-Soon Khor, Masaya Sugiyama, Masashi Mizokami. ASSOCIATION OF HLA CLASS II GENES WITH RESPONSE TO HEPATITIS B VACCINE IN JAPANESE. HUMAN IMMUNOLOGY. 2017. 78. 98-98
Yasuhito Tanaka, Kentaro Matsuura, Hiromi Sawai, Kazuho Ikeo, Atsumasa Komori, Hitoshi Yoshiji, Naoya Sakamoto, Yasuhiro Asahina, Masayuki Kurosaki, Norifumi Kawada, et al. Genome-wide association study identifies a TLL1 variant associated with development of hepatocellular carcinoma after eradication of hepatitis C virus. HEPATOLOGY. 2016. 64. 6. 1132A-1133A
Nao Nishida, Jun Ohashi, Masaya Sugiyama, Hiromi Sawai, Keisuke Hino, Masao Honda, Shuichi Kaneko, Hiroshi Yatsuhashi, Osamu Yokosuka, Kazuhiko Koike, et al. Comprehensive understanding of associations between HLA class II genes and chronic hepatitis B infection in the Japanese population. HEPATOLOGY. 2016. 64. 311A-311A
