No association of brain-derived neurotrophic factor Val66Met polymorphism with anorexia nervosa in Japanese

✍ Scribed by Tetsuya Ando; Toshio Ishikawa; Mari Hotta; Tetsuro Naruo; Kenjiro Okabe; Toshihiro Nakahara; Masato Takii; Keisuke Kawai; Takashi Mera; Chiemi Nakamoto; Michiko Takei; Chikara Yamaguchi; Toshihiko Nagata; Yuri Okamoto; Kazuyoshi Ookuma; Masanori Koide; Takao Yamanaka; Shiho Murata; Naho Tamura; Nobuo Kiriike; Yuhei Ichimaru; Gen Komaki; the Japanese Genetic Research Group For Eating Disorders

• Publisher: John Wiley and Sons
• Year: 2011
• Tongue: English
• Weight: 97 KB
• Volume: 159B
• Category: Article
• ISSN: 1552-4841
• DOI: 10.1002/ajmg.b.32000

✦ Synopsis

Abstract

The Met66 allele of the Val66Met polymorphism in the brain‐derived neurotrophic factor (BDNF) gene has been reported to be associated with anorexia nervosa (AN), and also lower minimum body mass index (BMI) and higher harm avoidance in AN. We genotyped the Val66Met polymorphism (rs6265) in 689 AN cases and 573 control subjects. There were no significant differences in the genotype or allele frequencies of the Val66Met between AN and control subjects (allele wise, odds ratio = 0.920, 95% CI 0.785–1.079, P = 0.305). No difference was found in minimum BMIs related to Val66Met in AN (one‐way ANOVA, P > 0.05). Harm avoidance scores on the Temperament and Character Inventory were lower in the Met66 allele carriers (P = 0.0074) contrary to the previous report. Thus we were unable to replicate the previous findings that the Met66 allele of the BDNF is associated with AN and that the minimum BMI is lower or the harm avoidance score is higher in AN patients with the Met66 allele. © 2011 Wiley Periodicals, Inc.