Common variants at CDKAL1 and KLF9 are associated with body mass index in east Asian populations

• Published in: Nature genetics Vol. 44; no. 3; pp. 302 - 306
• Main Authors: Okada, Yukinori, Kubo, Michiaki, Ohmiya, Hiroko, Takahashi, Atsushi, Kumasaka, Natsuhiko, Hosono, Naoya, Maeda, Shiro, Wen, Wanqing, Dorajoo, Rajkumar, Go, Min Jin, Zheng, Wei, Kato, Norihiro, Wu, Jer-Yuarn, Lu, Qi, Tsunoda, Tatsuhiko, Yamamoto, Kazuhiko, Nakamura, Yusuke, Kamatani, Naoyuki, Tanaka, Toshihiro
• Format: Journal Article
• Language: English
• Published: New York Nature Publishing Group US 01.03.2012; Nature Publishing Group
• Subjects: 631/208/205/2138; 631/208/2489/144; 692/699/2743/393; Agriculture; Animal Genetics and Genomics; Asian Americans; Asian Continental Ancestry Group - genetics; Biological and medical sciences; Biomedical and Life Sciences; Biomedicine; Body Mass Index; Cancer Research; Chromosomes, Human, Pair 6 - genetics; Chromosomes, Human, Pair 9 - genetics; Cyclin-Dependent Kinase 5 - genetics; Cyclin-dependent kinases; Etiology; Far East; Fundamental and applied biological sciences. Psychology; Gene Function; Genetic aspects; Genetic Variation; Genetics; Genetics of eukaryotes. Biological and molecular evolution; Genome-Wide Association Study; Genomes; Genotype; Human Genetics; Humans; Kruppel-Like Transcription Factors - genetics; letter; Meta-analysis; Obesity; Obesity - ethnology; Obesity - genetics; Polymorphism, Single Nucleotide - genetics; Principal components analysis; Risk factors; Single nucleotide polymorphisms; Studies; tRNA Methyltransferases; Japan; Variant; Body mass index
• ISSN: 1061-4036; 1546-1718; 1546-1718
• DOI: 10.1038/ng.1086

Yukinori Okada and colleagues report a genome-wide association study for body mass index (BMI) in east Asians. They identify genetic variants associated with BMI near CDKAL1 and KLF9 . Obesity is a disorder with a complex genetic etiology, and its epidemic is a worldwide problem. Although multiple genetic loci associated with body mass index, the most common measure of obesity, have been identified in European populations, few studies have focused on Asian populations. Here we report a genome-wide association study and replication studies with 62,245 east Asian subjects, which identified two new body mass index–associated loci in the CDKAL1 locus at 6p22 (rs2206734, P = 1.4 × 10 −11 ) and the KLF9 locus at 9q21 (rs11142387, P = 1.3 × 10 −9 ), as well as several previously reported loci (the SEC16B , BDNF, FTO , MC4R and GIPR loci, P < 5.0 × 10 −8 ). We subsequently performed gene-gene interaction analyses and identified an interaction ( P = 2.0 × 10 −8 ) between a SNP in the KLF9 locus (rs11142387) and one in the MSTN (also known as GDF8 ) locus at 2q32 (rs13034723). These findings should provide useful insights into the etiology of obesity.