New Susceptibility Loci for Osteoarthritis Identified: A Genome-wide Association Study

by Dr. Poonam Kuruganti on  July 24, 2012 at 4:30 PM Health Watch
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Osteoarthritis, a common type of arthritis, often leads to pain and disability in the older population. It is a multifactorial musculoskeletal disease with hereditary and environmental influences. Previous studies identified 3 of 11 genetic sites linked with osteoarthritis in European patients.
New Susceptibility Loci for Osteoarthritis Identified: A Genome-wide Association Study
New Susceptibility Loci for Osteoarthritis Identified: A Genome-wide Association Study
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The current Genome-Wide Association Study (GWAS) of osteoarthritis, part of the Arthritis Research UK Osteoarthritis Genetics (arcOGEN) Consortium, was conducted in several thousands of unrelated osteoarthritis and population-based unrelated control patients.

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The meta-analysis identified eight genetic loci with a link to increased risk of osteoarthritis occurrence.  These included rs6976  on chromosome 3, and the loci close to ASTN2 (chromosome 9), between FILIP1 and SENP6 (chromosome 6),   close to KLHDC5 and PTHLH (chromosome 9), close to CHST11 (chromosome 12) and the FTO gene.

These joint-specific inherited factors do influence osteoarthritis development and progression.  The association of osteoarthritis with the FTO gene (the gene related to obesity) reiterates the fact that osteoarthritis is associated with body excess weight.

Thus, the newly discovered genetic influences contribute to increased risk for osteoarthritis and provide new targets for therapeutic action.

Reference: Identification of new susceptibility loci for osteoarthritis (arcOGEN): a genome-wide association study; arcOGEN contributors; The Lancet Online Publication July 2012

Source: Medindia
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