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The study was published in the journal Nature Communications on January 11, 2021. “JG1 can aid with the clinical sequence analysis of Japanese individuals with rare diseases as it eliminates the genomic differences from the international reference genome,” said Jun Takayama, co-author of the study.  Back in 2003, the Human Genome Project, through a gargantuan global effort, cracked the code of life and mapped all the genes of the human genome. Since then, more accurate versions of the human reference genome have been realized. Aiding this has been the advancement in next-generation sequencing technologies that allow for short read of approximately several hundred bases in a massively parallel way, reducing the costs and time to sequence DNA and RNA. The international reference genome is based on an individual of African-European descent. This hampers investigating genetic variants or rare disease and cancer driving genes in Japanese owing to natural genomic difference reflective in different populations. Associate professor Takayama and professor Gen Tamiya from Tohoku University’s Tohoku Medical Megabank Organization (ToMMo) and the Advanced Research Center for Innovations in Next-Generation Medicine (INGEM) and colleagues from Tohoku University School of Medicine, School of Information Sciences, RIKEN AIP Center, and Miyagi Cancer Research Institute developed JG1 as the first part of the Japanese Reference Genome Assembly (JRGA) project. This high-precision reference sequence is applicable to the whole human genome analysis and was constructed by analyzing the genomes of three Japanese individuals using high-coverage, long-read next generation sequencing technologies. Researchers can efficiently investigate the causal genetic variants of rare diseases and cancer driver genes with JG1. “JG1 may be applicable to other populations, especially those from Asia. In addition, with the JG1, the accuracy of the Japanese allele frequency and haplotype reference panels gets improved,” added Takayama. Publication Details Title: Construction and integration of three de novo Japanese human genome assemblies toward a population-specific reference Authors: Jun Takayama, Shu Tadaka, Kenji Yano, Fumiki Katsuoka, Chinatsu Gocho, Takamitsu Funayama, Satoshi Makino, Yasunobu Okamura, Atsuo Kikuchi, Sachiyo Sugimoto, Junko Kawashima, Akihito Otsuki, Mika Sakurai-Yageta, Jun Yasuda, Shigeo Kure, Kengo Kinoshita, Masayuki Yamamoto, and Gen Tamiya Journal: Nature Communications Published date: January 11, 2021 DOI: 10.1038/s41467-020-20146-8   *Updated version of Japanese reference genome(JG2) which is constructed by integrating six de novo phased assemblies from three Japanese male individuals is now available on jMorp.   Related Link 2020 major update of Japanese Multi Omics Reference Panel "jMorp": JG2 Japanese Reference Genome, 8.3KJPN allele frequency panel, and 25K Metabolome (2020.10.05) The Japanese reference genome, JG1, constructed by integrating three de novo assembled genomes of Japanese male individuals [Press Release] (2019.02.25) News Timeline Tweet About Mission and Outline Background Activities For Community Message from Executive Director Organization and Members Policy Research Cohort Study and Biobank Integrative Genomics Publications Facilities and Equipment Researchers Ethical Issues Specimen &＃038; Data Collection ToMMo's Library News Timeline access & contact sitemap links JAPANESE Large Small A A Copyright(C) Tohoku University Tohoku Medical Megabank Organization All Rights Reserved. sitemap access & contact About Research Ethical Issues Specimen &＃038; Data Collection ToMMo's Library News Timeline access & contact sitemap links Japanese