The return of individual genomic results to research participants: design and pilot study of Tohoku Medical Megabank Project

Hiroshi Kawame, Akimune Fukushima, Nobuo Fuse, Fuji Nagami, Yoichi Suzuki, Mika Sakurai-Yageta, Jun Yasuda, Yumi Yamaguchi-Kabata, Kengo Kinoshita, Soichi Ogishima, Takako Takai, Shinichi Kuriyama, Atsushi Hozawa, Naoki Nakaya, Tomohiro Nakamura, Naoko Minegishi, Junichi Sugawara, Kichiya Suzuki, Hiroaki Tomita, Akira UrunoTomoko Kobayashi, Yayoi Aizawa, Tomoharu Tokutomi, Kayono Yamamoto, Kinuko Ohneda, Shigeo Kure, Yoko Aoki, Hideki Katagiri, Yasushi Ishigaki, Shojiro Sawada, Makoto Sasaki, Masayuki Yamamoto

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)


Certain large genome cohort studies attempt to return the individual genomic results to the participants; however, the implementation process and psychosocial impacts remain largely unknown. The Tohoku Medical Megabank Project has conducted large genome cohort studies of general residents. To implement the disclosure of individual genomic results, we extracted the potential challenges and obstacles. Major challenges include the determination of genes/disorders based on the current medical system in Japan, the storage of results, prevention of misunderstanding, and collaboration of medical professionals. To overcome these challenges, we plan to conduct multilayer pilot studies, which deal with different disorders/genes. We finally chose familial hypercholesterolemia (FH) as a target disease for the first pilot study. Of the 665 eligible candidates, 33.5% were interested in the pilot study and provided consent after an educational “genetics workshop” on the basic genetics and medical facts of FH. The genetics professionals disclosed the results to the participants. All positive participants were referred to medical care, and a serial questionnaire revealed no significant psychosocial distress after the disclosure. Return of genomic results to research participants was implemented using a well-prepared protocol. To further elucidate the impact of different disorders, we will perform multilayer pilot studies with different disorders, including actionable pharmacogenomics and hereditary tumor syndromes.

Original languageEnglish
Pages (from-to)9-17
Number of pages9
JournalJournal of Human Genetics
Issue number1
Publication statusPublished - 2022 Jan


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