Rs6265

rs6265, also known as Val66Met, is a SNP in brain-derived neurotrophic factor BDNF gene. The more common G allele encodes the Val, while the A allele encodes Met.

Met/A allele associated with introversion

The A allele may also be protective against depression when subjected to repeated defeat g2b2mh blog

On a driving-based motor learning task subjects with this genotype showed greater error during short-term learning and poorer retention over 4 days, relative to subjects without the polymorphism. The presence of this BDNF polymorphism is associated with differences in brain motor system function, altered short-term plasticity, and greater error in short-term motor learning.

Wired discusses the research as does 23andMe blog.

Alzheimer's disease risk for non ApoE4 carriers is affected by the heterozygous form of rs6265, as well as the diplotypes of rs6265, rs11030104, and rs2049045.

Depressed patients who had (GA or AA) appeared to show a significantly increased risk of suicidal behaviour

In 2 studies of British women, rs6265(A;A) women had a lower body mass index than rs6265(G) allele carriers, with the difference being -0.57-0.911 kg/m(2), depending on the study.