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(Link-ID: 5407)
Eine Studie meldet zwei neue Gene.
Die Daten, aus 14 nationalen Studien, von 5530 adipösen Kindern und Jugendlichen sowie von 8318 Normalgewichtigen flossen in diese Studie ein. Die Erbanlagen des Gens OLFM4 und rs9299 nahe des Gens HOXB5, führen auch bei Erwachsenen zu mehr Gewicht.
A genome-wide association meta-analysis identifies new childhood obesity loci
Multiple genetic variants have been associated with adult obesity and a few with severe obesity in childhood; however, less progress has been made in establishing genetic influences on common early-onset obesity. We performed a North American, Australian and European collaborative meta-analysis of 14 studies consisting of 5,530 cases (≥95th percentile of body mass index (BMI)) and 8,318 controls (<50th percentile of BMI) of European ancestry. Taking forward the eight newly discovered signals yielding association with P < 5 × 10−6 in nine independent data sets (2,818 cases and 4,083 controls), we observed two loci that yielded genome-wide significant combined P values near OLFM4 at 13q14 (rs9568856; P = 1.82 × 10−9; odds ratio (OR) = 1.22) and within HOXB5 at 17q21 (rs9299; P = 3.54 × 10−9; OR = 1.14). Both loci continued to show association when two extreme childhood obesity cohorts were included (2,214 cases and 2,674 controls). These two loci also yielded directionally consistent associations in a previous meta-analysis of adult BMI1
© Nature Genetics
--Jonathan P Bradfield, H Rob Taal, Nicholas J Timpson, AndrÄ Scherag, Cecile Lecoeur,
Nicole M Warrington, Elina Hypponen, Claus Holst, Beatriz Valcarcel,
Elisabeth Thiering, Rany M Salem, Fredrick R Schumacher, Diana L Cousminer,
Patrick M A Sleiman, Jianhua Zhao, Robert I Berkowitz, Karani S Vimaleswaran,
Ivonne Jarick, Craig E Pennell, David M Evans, Beate St Pourcain,
Diane J Berry, Dennis O Mook-Kanamori, Albert Hofman, Fernando Rivadeneira et al.--
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