PMID- 30245555 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20201001 IS - 0961-205X (Print) IS - 1467-9507 (Electronic) IS - 0961-205X (Linking) VI - 27 IP - 3 DP - 2018 Aug TI - The BDNF gene val66met polymorphism and behavioral inhibition in early childhood. PG - 543-554 LID - 10.1111/sode.12292 [doi] AB - Stably elevated behavioural inhibition (BI) is an established risk factor for internalizing disorders. This stability may be related to genetic factors, including a valine-to-methionine substitution on codon 66 (val66met) of the brain-derived neurotrophic factor (BDNF) gene. Past work on the BDNF met variant has inconsistently linked it to vulnerability to internalizing problems; some of this inconsistency may stem from the failure to consider gene-trait interactions in shaping the course of early BI. Toward elucidating early pathways to anxiety vulnerability, we examined gene-by-trait interactions in predicting the course of BI over time in 476 children, assessed for BI using standardized laboratory methods. We found that children with the met allele showed lower stability of BI between ages 3 and 6 than those without this allele. While the mechanisms that underlie this effect are unclear, our findings are consistent with the notion that the met variant, in the context of early BI, influences the stability of this trait in early development. FAU - Vandermeer, Matthew R J AU - Vandermeer MRJ FAU - Sheikh, Haroon I AU - Sheikh HI FAU - Singh, Shiva S AU - Singh SS FAU - Klein, Daniel N AU - Klein DN FAU - Olino, Thomas M AU - Olino TM FAU - Dyson, Margaret W AU - Dyson MW FAU - Bufferd, Sara J AU - Bufferd SJ FAU - Hayden, Elizabeth P AU - Hayden EP LA - eng GR - R01 MH069942/MH/NIMH NIH HHS/United States PT - Journal Article DEP - 20180313 PL - England TA - Soc Dev JT - Social development (Oxford, England) JID - 101246621 PMC - PMC6142175 MID - NIHMS950659 OTO - NOTNLM OT - BDNF OT - Gene-trait interaction OT - behavioural inhibition OT - children OT - laboratory assessment OT - val66met EDAT- 2018/09/25 06:00 MHDA- 2018/09/25 06:01 PMCR- 2019/08/01 CRDT- 2018/09/25 06:00 PHST- 2018/09/25 06:00 [entrez] PHST- 2018/09/25 06:00 [pubmed] PHST- 2018/09/25 06:01 [medline] PHST- 2019/08/01 00:00 [pmc-release] AID - 10.1111/sode.12292 [doi] PST - ppublish SO - Soc Dev. 2018 Aug;27(3):543-554. doi: 10.1111/sode.12292. Epub 2018 Mar 13.