Abstract
Family with sequence similarity 46, member A (FAM46A) gene VNTR and BCL2-Associated Athanogene 6 (BAG6) gene rs3117582 polymorphisms were genotyped in a case-control study with 474 large-joint (hip and knee) osteoarthritis (OA) patients and 568 controls in Croatian population by candidate-gene approach for association with OA. We found that BAG6 rs3117582 SNP genotypes were associated with protection (major allele homozygote) and susceptibility (major-minor allele heterozygote) to OA. BAG6 rs3117582 major allele (A) was associated with reduced risk to OA while the minor allele (C) was associated with increased risk to OA. We identified 6 alleles harboring 2 to 7 repeats making 20 genotypes for FAM46A. A rare FAM46A VNTR genotype comprising VNTR alleles with four and seven repeats (c/f) was associated with increased OA risk in both genders. The genotype with four and six repeats (c/e) was also associated with increased risk to OA in males. A polymorphic FAM46A allele with six repeats (e) was associated with reduced risk to OA in females. Our results suggest association between the FAM46A gene, BAG6 gene and OA in Croatian population, respectively. This is the first study to show associations between these genetic loci and OA.
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