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Genes for 9 health indicators
Date:12/7/2008

A new genome-wide study examines genetic variants associated with nine metabolic traits and is the first to draw out novel variants from a population unselected for current disease. The traits are indicators for common disease such as cardiovascular disease, type 2 diabetes, blood pressure, inflammation and lipid levels.

Cohorts are followed throughout their lives, gathering lifelong information about their health: these data will help researchers to dissect the complex causes of common disease, whether genetic or environmental. The current study might indicate genetic variants that influence early development of disease, informing public health measures.

Unlike case-control studies, which make genomic comparisons of apparently healthy people with patients with a specific condition, cohort studies provide long-term information across a population.

"The power of studies such as ours lies in their ability to examine these traits for early life events, to reflect the genetic make-up of the wider population and to investigate the relationship between genetic variation and environment over time," says Professor Leena Peltonen, Head of Human Genetics at the Wellcome Trust Sanger Institute and a senior author of the paper. "Our study indicates that the environment accounts for around 30% or less of the consequences of the traits. Clearly we have to increase our efforts to understand the genetic factors involved."

The population study looked at a cohort of people born in northern Finland in 1966: the environmental exposure and genetic background of this population is relatively homogeneous and, because the sample includes almost all people born in that year, it reflects the overall composition of the population.

The team looked at more than 360,000 genetic variants in almost 5000 people. These samples were typed to uncover variants associated with levels of triglycerides, high density lipoprotein, low density lipoprotein,
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Contact: Don Powell
don@sanger.ac.uk
44-012-234-96928
Wellcome Trust Sanger Institute
Source:Eurekalert

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