RT Journal Article SR Electronic T1 Replication and characterization of CADM2 and MSRA genes on human behavior JF bioRxiv FD Cold Spring Harbor Laboratory SP 110395 DO 10.1101/110395 A1 Brian Boutwell A1 David Hinds A1 the 23andMe Research Team A1 Jorim Tielbeek A1 Ken K. Ong A1 Felix R. Day A1 John R.B. Perry YR 2017 UL http://biorxiv.org/content/early/2017/02/21/110395.abstract AB Progress identifying the genetic determinants of personality has historically been slow, with candidate gene studies and small-scale genome-wide association studies yielding few reproducible results. In the UK Biobank study, genetic variants in CADM2 and MSRA were recently shown to influence risk taking behavior and irritability respectively, representing some of the first genomic loci to be associated with aspects of personality. We extend this observation by performing a personality “phenome-scan” across 16 traits in up to 140,487 participants from 23andMe for these two genes. Heritability estimates for these traits ranged from 5-19%, with both CADM2 and MSRA demonstrating significant effects on multiple personality types. These associations covered all aspects of the big five personality domains, including specific facet traits such as compliance, altruism, anxiety and activity / energy. This study both confirms and extends the original observations, highlighting the role of genetics in aspects of mental health and behavior.