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Logo of annrheumdAnnals of the Rheumatic DiseasesCurrent TOCInstructions for authors
 
Ann Rheum Dis. Jun 1998; 57(6): 371–374.
PMCID: PMC1752614
A genetic association study of the IGF-1 gene and radiological osteoarthritis in a population-based cohort study (the Rotterdam study)
I Meulenbelt, C Bijkerk, H Miedema, F Breedveld, A Hofman, H Valkenburg, H Pols, P Slagboom, and C M van Duijn
TNO Prevention and Health, Department of Vascular and Connective Tissue Research, Gaubius Laboratory, Leiden, The Netherlands.
Abstract
OBJECTIVE—A genetic association study was performed to investigate whether radiographical osteoarthritis (ROA) was associated with specific genotypes of the insulin-like growth factor I (IGF-1) gene.
METHODS—Subjects aged 55-65 years were selected from a population-based study of which ROA at the knee, hip, spine, and hand was assessed. Genotypes were determined of a polymorphism in the promoter region of the IGF-1 gene.
RESULTS—The IGF-1 locus was significantly associated with the presence of ROA (overall adjusted OR for heterozygous subjects = 1.9, 95% CI 1.2, 3.1 and for homozygous subjects 3.6, 95% CI 0.8, 16.2).
CONCLUSION—These results suggest that variation at the IGF-1 locus is associated with ROA development and may play a part in ROA pathogenesis. To confirm these findings replication in another population-based sample is needed.

Keywords: osteoarthritis; genetics; IGF-1
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