Genetic factors for human obesity |
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Authors: | S Ichihara Y Yamada |
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Institution: | (1) Department of Human Functional Genomics, Life Science Research Center, Mie University, 1577 Kurima-machiya, Tsu, Mie 514-8507, Japan |
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Abstract: | Obesity is a multifactorial and heterogeneous condition that results from alterations of various genes, each having a partial
and additive effect. The inheritance pattern of obesity is thus complex, and environmental factors play an important role
in promoting or delaying its development. The identification of susceptibility genes and genetic variants for obesity requires
various methodological approaches. Obesity is classified into three main categories on the basis of genetic etiology: monogenic,
syndromic, and polygenic obesity. Here we review monogenic and syndromic obesity. We also review the linkage analysis studies
followed by the candidate gene approaches and genome-wide association studies. Identification of the underlying genetic causes
of obesity will likely provide a basis both for the development of new therapeutic agents and for the personalized prevention
of this condition.
Received 2 October 2007; received after revision 15 November 2007; accepted 19 November 2007 |
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Keywords: | Obesity susceptibility gene polymorphism candidate gene genome-wide association study |
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