BDNF and obesity due to melanocortin 4 receptor deficiency: Associations between genotypes and obesity-related phenotypes were evaluated using ANOVA and ANCOVA, multivariable-adjusted models and multicollinearity analysis-based stepwise regression.<h4>Results</h4>In Koreans, MAFs for <i>FTO (3 SNPs), MC4R rs17782313</i> and <i>BDNF rs6265</i> were 13-16%, 27.1% and 47.4%, respectively.