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Gout is characterised by monosodium urate crystals in hyperuricaemic individuals.1 2 Impaired excretion of urate exacerbates this condition.1 Urate transporter 1 (encoded by SLC22A12) is an urate–anion exchanger in the kidneys mediating urate transportation across the apical membrane of the proximal tubules.3 4 SLC22A12 has been reported to influence urate homeostasis in Caucasian and Japanese populations5,–,8 but single nucleotide polymorphism (SNP) genotype effects on gout are unclear. We studied four SLC22A12 SNP associations with gout and urate levels in male Han Chinese from Taiwan and Solomon Islanders.
Clinical rheumatologists confirmed gout/tophi cases using American College of Rheumatology (ACR) criteria.9 Our controls had no diagnosis of gout and were not medicated with hypouricaemic agents during outpatient visits. We enrolled 115 …