Koichiro Higasa: Human Disease Genomics, Center for Genomic Medicine, Kyoto University Graduate School of Medicine, Kyoto, Japan.
Noriko Miyake: Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Japan.
Jun Yoshimura: Department of Computational Biology, Graduate School of Frontier Sciences, The University of Tokyo, Chiba, Japan.
Kohji Okamura: Department of Systems BioMedicine, National Research Institute for Child Health and Development, Tokyo, Japan.
Tetsuya Niihori: Department of Medical Genetics, Tohoku University Graduate School of Medicine, Sendai, Japan.
Hirotomo Saitsu: Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Japan.
Koichiro Doi: Department of Computational Biology, Graduate School of Frontier Sciences, The University of Tokyo, Chiba, Japan.
Masakazu Shimizu: Human Disease Genomics, Center for Genomic Medicine, Kyoto University Graduate School of Medicine, Kyoto, Japan.
Kazuhiko Nakabayashi: Department of Maternal-Fetal Biology, National Research Institute for Child Health and Development, Tokyo, Japan.
Yoko Aoki: Department of Medical Genetics, Tohoku University Graduate School of Medicine, Sendai, Japan.
Yoshinori Tsurusaki: Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Japan.
Shinichi Morishita: Department of Computational Biology, Graduate School of Frontier Sciences, The University of Tokyo, Chiba, Japan.
Takahisa Kawaguchi: Human Disease Genomics, Center for Genomic Medicine, Kyoto University Graduate School of Medicine, Kyoto, Japan.
Osuke Migita: Department of Maternal-Fetal Biology, National Research Institute for Child Health and Development, Tokyo, Japan.
Keiko Nakayama: Division of Cell Proliferation, United Centers for Advanced Research and Translational Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan.
Mitsuko Nakashima: Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Japan.
Jun Mitsui: Department of Neurology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan.
Maiko Narahara: Statistical Genetics, Center for Genomic Medicine, Kyoto University Graduate School of Medicine, Kyoto, Japan.
Keiko Hayashi: Department of Maternal-Fetal Biology, National Research Institute for Child Health and Development, Tokyo, Japan.
Ryo Funayama: Division of Cell Proliferation, United Centers for Advanced Research and Translational Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan.
Daisuke Yamaguchi: Bits Co., Ltd., Tokyo, Japan.
Hiroyuki Ishiura: Department of Neurology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan.
Wen-Ya Ko: Statistical Genetics, Center for Genomic Medicine, Kyoto University Graduate School of Medicine, Kyoto, Japan.
Kenichiro Hata: Department of Maternal-Fetal Biology, National Research Institute for Child Health and Development, Tokyo, Japan.
Takeshi Nagashima: Division of Cell Proliferation, United Centers for Advanced Research and Translational Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan.
Ryo Yamada: Statistical Genetics, Center for Genomic Medicine, Kyoto University Graduate School of Medicine, Kyoto, Japan.
Yoichi Matsubara: Department of Medical Genetics, Tohoku University Graduate School of Medicine, Sendai, Japan.
Akihiro Umezawa: Department of Reproductive Biology, Center for Regenerative Medicine, National Research Institute for Child Health and Development, Tokyo, Japan.
Shoji Tsuji: Department of Neurology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan.
Naomichi Matsumoto: Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Japan.
Fumihiko Matsuda: Human Disease Genomics, Center for Genomic Medicine, Kyoto University Graduate School of Medicine, Kyoto, Japan.
Whole-genome and -exome resequencing using next-generation sequencers is a powerful approach for identifying genomic variations that are associated with diseases. However, systematic strategies for prioritizing causative variants from many candidates to explain the disease phenotype are still far from being established, because the population-specific frequency spectrum of genetic variation has not been characterized. Here, we have collected exomic genetic variation from 1208 Japanese individuals through a collaborative effort, and aggregated the data into a prevailing catalog. In total, we identified 156 622 previously unreported variants. The allele frequencies for the majority (88.8%) were lower than 0.5% in allele frequency and predicted to be functionally deleterious. In addition, we have constructed a Japanese-specific major allele reference genome by which the number of unique mapping of the short reads in our data has increased 0.045% on average. Our results illustrate the importance of constructing an ethnicity-specific reference genome for identifying rare variants. All the collected data were centralized to a newly developed database to serve as useful resources for exploring pathogenic variations. Public access to the database is available at http://www.genome.med.kyoto-u.ac.jp/SnpDB/.