The renal urate transporter SLC17A1 locus: confirmation of association with gout
- Equal contributors
1 Department of Biochemistry, University of Otago, 710 Cumberland Street, Dunedin 9054, New Zealand
2 Queensland Institute of Medical Research, 300 Herston Road, 4006 Brisbane, Queensland, Australia
3 Department of Medicine, University of Otago, 210 Great King Street, Dunedin 9016, New Zealand
4 Department of Rheumatology, Middlemore Hospital, 100 Hospital Road, Auckland 2025, New Zealand
5 Department of Medicine, University of Otago, 23A Mein Street, Wellington 6242, New Zealand
6 Department of Medicine, University of Auckland, 2 Park Road, Auckland 1023, New Zealand
7 Department of Medicine, University of Otago, 2 Riccarton Avenue, Christchurch 8140, New Zealand
Arthritis Research & Therapy 2012, 14:R92 doi:10.1186/ar3816Published: 27 April 2012
Two major gout-causing genes have been identified, the urate transport genes SLC2A9 and ABCG2. Variation within the SLC17A1 locus, which encodes sodium-dependent phosphate transporter 1, a renal transporter of uric acid, has also been associated with serum urate concentration. However, evidence for association with gout is equivocal. We investigated the association of the SLC17A1 locus with gout in New Zealand sample sets.
Five variants (rs1165196, rs1183201, rs9358890, rs3799344, rs12664474) were genotyped across a New Zealand sample set totaling 971 cases and 1,742 controls. Cases were ascertained according to American Rheumatism Association criteria. Two population groups were studied: Caucasian and Polynesian.
At rs1183201 (SLC17A1), evidence for association with gout was observed in both the Caucasian (odds ratio (OR) = 0.67, P = 3.0 × 10-6) and Polynesian (OR = 0.74, P = 3.0 × 10-3) groups. Meta-analysis confirmed association of rs1183201 with gout at a genome-wide level of significance (OR = 0.70, P = 3.0 × 10-8). Haplotype analysis suggested the presence of a common protective haplotype.
We confirm the SLC17A1 locus as the third associated with gout at a genome-wide level of significance.