Press Release

Genetic footprints of assortative mating in the Japanese population

Release:Sep 26, 2022 Update:Dec 23, 2022
  • Headline
  • Press Release

Professor Yoichiro Kamatani of the Department of Computational Biology and Medical Sciences in the Graduate School of Frontier Sciences played a leading role in the research project.


Assortative mating (AM) is a pattern characterized by phenotypic similarities between mating partners. Detecting the evidence of AM has been challenging due to the lack of large-scale datasets that include phenotypic data on both partners, especially in populations of non-European ancestries. Gametic phase disequilibrium between trait-associated alleles is a signature of parental AM on a polygenic trait, which can be detected even without partner data. Here, using polygenic scores for 81 traits in the Japanese population using BioBank Japan Project genome-wide association studies data (n = 172,270), we found evidence of AM on the liability to type 2 diabetes and coronary artery disease, as well as on dietary habits. In cross-population comparison using United Kingdom Biobank data (n = 337,139) we found shared but heterogeneous impacts of AM between populations.


Nature Human Behavior

"Genetic footprints of assortative mating in the Japanese population"

Kenichi Yamamoto, Kyuto Sonehara, Shinichi Namba, Takahiro Konuma, Hironori Masuko, Satoru Miyawaki, The BioBank Japan Project, Yoichiro Kamatani, Nobuyuki Hizawa, Keiichi Ozono, Loic Yengo, Yukinori Okada*


  • hatebu
  • X
  • Facebook
  • LINE