The cyclic GMP-dependent protein kinase II gene associates with gout disease: identified by genome-wide analysis and case–control study

• Published in: Annals of the rheumatic diseases Vol. 68; no. 7; pp. 1213 - 1219
• Main Authors: Chang, S-J, Tsai, M-H, Ko, Y-C, Tsai, P-C, Chen, C-J, Lai, H-M
• Format: Journal Article
• Language: English
• Published: London BMJ Publishing Group Ltd and European League Against Rheumatism 01.07.2009; BMJ Publishing Group; BMJ Publishing Group LTD
• Subjects: Adult; Biological and medical sciences; Case-Control Studies; Chromosomes; Chromosomes, Human, Pair 21 - genetics; Cyclic GMP-Dependent Protein Kinase Type II; Cyclic GMP-Dependent Protein Kinases - genetics; Cytokines; Design; Diseases of the osteoarticular system; Gangrene; Genes; Genetic Predisposition to Disease - genetics; Genomes; Gout - genetics; Hospitals; Humans; Inflammatory joint diseases; Kinases; Lod Score; Male; Medical sciences; Metabolic diseases; Miscellaneous. Osteoarticular involvement in other diseases; Other metabolic disorders; Pathogenesis; Pedigree; Polymorphism, Genetic; Purines and pyrimidines (gout, hyperuricemia...); Rheumatism; Tumor necrosis factor-TNF; Uric acid; Enzyme; Transferases; Gout; Non-specific serine/threonine protein kinase; Diseases of the osteoarticular system; Rheumatology; Metabolic diseases; Uric acid; Case control study; Microcristalline arthropathy; Hyperuricemia; Purine; Genome; Microcrystal
• ISSN: 0003-4967; 1468-2060
• DOI: 10.1136/ard.2008.093252

Objective:To identify the position of a gout susceptibility gene.Methods:A genome-wide scan was performed using 382 random polymorphic microsatellite markers spread across 22 autosomes in a Taiwanese family with gout to screen for the gout susceptibility genetic marker. Its association with gout by 33 single nucleotide polymorphisms (SNP) in 148 matched case–control subjects was confirmed. The family with gout comprised eight patients with gout and 10 gout-free subjects; case–control subjects were 74 male patients with gout and 74 healthy controls matched by age.Results:Analysis of the genome-wide scan results by a non-parametric linkage method found that chromosome 4q21 contains a locus significantly linked with gout (D4S3243 at 81 289 553 bp; p = 0.004; LOD score = 5.13). In SNP genotyping analysis at the neighbourhood regions of marker D4S3243 for the case–control subjects, the polymorphisms rs7688672 and rs6837293, located on the cGMP-dependent protein kinase II (cGK II) gene, were found to relate significantly to gout disease in a recessive model after adjustment of hyperuricaemia (OR = 2.89, 95% CI 1.19 to 7.02 and OR = 2.72, 95% CI 1.13 to 6.54, respectively).Conclusions:This study suggests that the cGK II gene on chromosome 4q21 is most likely to harbour gout disease independently of hyperuricaemia and is inherited recessively.