rs16890979

This replication study analyzed 2255 variants in LD with GWAS-identified gout/serum urate susceptibility loci in 1255 Han Chinese gout patients and 1848 controls. Twenty-three variants (41%) showed nominal association (p<0.05), with the strongest signal at ABCG2 rs1481012 (p=8.96×10⁻¹¹, OR=1.890). Previous gout-associated loci including ABCG2, SLC2A9, GCKR, ALDH2, and CNIH2 were replicated, while cumulative genetic risk scores showed that individuals with ≥8 risk alleles had significantly increased gout risk (OR=16.361 for ≥12 alleles).

This replication study examined 2,255 variants in linkage disequilibrium with GWAS-identified gout/urate susceptibility loci in 1,255 Han Chinese gout patients and 1,848 controls. Twenty-three variants (41% of 56 LD-pruned variants) showed nominal association with gout (p < 0.05), with the strongest signals at ABCG2 (rs1481012, OR=1.890, p=8.96×10⁻¹¹) and SLC2A9 (rs11722228, OR=1.619, p=2.40×10⁻⁶). Cumulative genetic risk score analysis demonstrated increasing gout risk with growing numbers of risk alleles (OR=16.361 for ≥12 alleles vs ≤5 reference).

A genome-wide association study of 868 Old Order Amish identified the Val253Ile variant (rs16890979) in GLUT9 as a determinant of serum uric acid levels (p = 1.43×10⁻¹¹, β = -0.47 mg/dL per minor allele). The variant explains 33% of uric acid variation and was validated to be associated with gout in the Framingham Heart Study (p = 0.004), suggesting GLUT9's role in uric acid homeostasis.